SA580资料

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SA580

Low-voltage mixer FM IF system

Rev. 01 — 1 November 2004

Objective data sheet

1.Introduction

The SA580 was designed for cordless telephone applications in which efficient and economic integrated solutions are required and yet high performance is desirable. Although the product is not targeted to meet the stringent specifications of high

performance cellular equipment, it will exceed the needs for analog cordless phones. The minimal amount of external components and absence of any external adjustments makes for a very economical solution.

2.General description

The SA580 is a low-voltage monolithic FM IF system incorporating a mixer/oscillator, two limiting intermediate frequency amplifiers, quadrature detector, logarithmic RSSI, voltage regulator and audio and RSSI opamps. The SA580 is available in a 20-pin SSOP.

3.Features

■■■■■■■■■■■■

Low power consumption: 5.0 mA typical at 5 VMixer input to >100 MHz

Mixer conversion power gain of 17 dB at 45 MHz

XTAL oscillator effective to 100 MHz (LC oscillator or external oscillator can be used at higher frequencies)

102 dB of IF amp/limiter gain

2 MHz IF amp/limiter small signal bandwidth

Temperature compensated logarithmic RSSI with a 70 dB dynamic rangeLow external component count; suitable for crystal/ceramic/LC filtersAudio output internal opampRSSI output internal opamp

Internal opamps with rail-to-rail outputs

ESD protection: Human body model 2 kV; robot model 200 V

4.Applications

■Cordless phones

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Philips Semiconductors

SA580

Low-voltage mixer FM IF system

5.Ordering information

Table 1:

Ordering information

Package Name

SA580DK

SSOP20

Description

plastic shrink small outline package; 20 leads; body width 4.4 mm

VersionSOT266-1

Type number

6.Block diagram

20191817161514131211IF ampmixerOSCILLATORRSSIlimiterquadE123B45VREG67audio10002aab125Fig 1.Block diagram7.Pinning information

7.1Pinning

RF IN+RF IN− DECOUPLINGOSCOUTOSCINRSSI OUTVCCAUDIO FEEDBACKAUDIO OUTRSSI FEEDBACK123456720MIXER OUT19IF AMP DECOUPLING18IF AMP IN17IF AMP DECOUPLING16IF AMP OUT15GND14LIMITER IN13LIMITER DECOUPLING12LIMITER DECOUPLING11LIMITER OUT002aab134SA580DKQUADRATURE IN10Fig 2.Pin configuration9397 750 14161© Koninklijke Philips Electronics N.V. 2004. All rights reserved.

Objective data sheetRev. 01 — 1 November 2004 2 of 16

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Philips Semiconductors

SA580

Low-voltage mixer FM IF system

7.2Pin description

Table 2:SymbolRF IN+

RF IN󰀂 DECOUPLINGOSCOUTOSCINRSSI OUTVCC

AUDIO FEEDBACKAUDIO OUTRSSI FEEDBACKQUADRATURE INLIMITER OUT

LIMITER DECOUPLINGLIMITER DECOUPLINGLIMITER INGNDIF AMP OUT

IF AMP DECOUPLINGIF AMP IN

IF AMP DECOUPLINGMIXER OUT

Pin description

Pin12345671011121314151617181920

Description

positive RF mixer input

negative RF mixer input, decouplingoscillator output (emitter)oscillator input (base)RSSI amplifier outputpositive supply

audio amplifier negative input, feedbackaudio amplifier output

RSSI amplifier negative input, feedbackquadrature detector inputlimiter amplifier outputlimiter decouplinglimiter decouplinglimiter amplifier inputground

IF amplifier outputIF amplifier decouplingIF amplifier inputIF amplifier decouplingmixer output

8.Functional description

The SA580 is an IF signal processing system suitable for second IF systems with input frequency as high as 100 MHz. The bandwidth of the IF amplifier and limiter is at least 2 MHz with 90 dB of gain. The gain/bandwidth distribution is optimized for 455 kHz,

1.5 k: source applications. The overall system is well-suited to battery operation as well as and high quality products of all types.

The input stage is a Gilbert cell mixer with oscillator. Typical mixer characteristics include a noise figure of 7.0 dB, conversion gain of 17 dB, and input third-order intercept of 󰀂10 dBm. The oscillator will operate in excess of 100 MHz in LC tank configurations. Hartley or Colpitts circuits can be used up to 100 MHz for XTAL configurations.

The output impedance of the mixer is a 1.5 k: resistor permitting direct connection to a 455 kHz ceramic filter. The input resistance of the limiting IF amplifiers is also 1.5 k:. With most 455 kHz ceramic filters and many crystal filters, no impedance matching network is necessary. The IF amplifier has 44 dB of gain and 5.5 MHz bandwidth. The IF limiter has 58 dB of gain and 4.5 MHz bandwidth. To achieve optimum linearity of the log signal strength indicator, there must be a 12 dB(V)1 insertion loss between the first and second IF stages. If the IF filter or interstage network does not cause 12 dB(V) insertion loss, a

dB(V) = 20log Vo/Vi.

9397 750 14161

Objective data sheetRev. 01 — 1 November 2004 3 of 16

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Philips Semiconductors

SA580

Low-voltage mixer FM IF system

fixed or variable resistor or an L pad for simultaneous loss and impedance matching can be added between the first IF output (pin 16) and the interstage network. The overall gain will then be 90 dB with 2 MHz bandwidth.

The signal from the second limiting amplifier goes to a Gilbert cell quadrature detector. One port of the Gilbert cell is internally driven by the IF. The other output of the IF is AC-coupled to a tuned quadrature network. This signal, which now has a 90q phase relationship to the internal signal, drives the other port of the multiplier cell.

The demodulated output of the quadrature drives an internal opamp. This opamp can be configured as a unity gain buffer, or for simultaneous gain, filtering, and 2nd-order temperature compensation if needed. It can drive an AC load as low as 10 k: with a rail-to-rail output.

A log signal strength indicator completes the circuitry. The output range is greater than 70 dB and is temperature compensated. This signal drives an internal opamp. The opamp is capable of rail-to-rail output. It can be used for gain, filtering, or 2nd-order temperature compensation of the RSSI, if needed.

Objective data sheetRev. 01 — 1 November 2004 4 of 16

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Philips Semiconductors

SA580

Low-voltage mixer FM IF system

9.Limiting values

Table 3:Limiting values

In accordance with the Absolute Maximum Rating System (IEC 60134).SymbolVCCTstgTambZth

Parameter

single supply voltagestorage temperature rangeoperating ambient temperature rangethermal impedance

Conditions

Min-󰀂65󰀂40-Max715085117

UnitVqCqCqC/W

10.Static characteristics

Table 4:Static characteristics

Tamb = 25 qC; VCC = +5 V, unless otherwise stated. [1]SymbolVCCICC

[1]

Parameterpower supply voltage rangeDC current drain

ConditionsMin4.5-

Typ-5.0

Max6.06.0

UnitVmA

RF frequency = 45 MHz; +14.5 dBV RF input step-up; IF frequency = 455 kHz; R17 = 2.4 k: and

R18 = 3.3 k:; RF level = 󰀁45 dBm; FM modulation = 1 kHz with ± 5 kHz peak deviation. Audio output with de-emphasis filter and C-message weighted filter. See Figure 3 “45 MHz application circuit” on page 7. The parameters listed above are tested using automatic test equipment to assure consistent electrical characteristics. The limits do not represent the ultimate performance limits of the device. Use of an optimized RF layout will improve many of the listed parameters.

Objective data sheetRev. 01 — 1 November 2004 5 of 16

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Philips Semiconductors

SA580

Low-voltage mixer FM IF system

11.Dynamic characteristics

Table 5:Symbolfinfosc

Dynamic characteristics Parameterinput frequencycrystal oscillator frequencynoise figure at 45 MHz

third-order input

intercept point (50 : source)

PG(conv)Ri(RF)Ci(RF)Ro(mix)IF sectionGa(IF)LG

IF amp gainlimiter gainAM rejectionaudio levelSINAD sensitivity

THDS/N

total harmonic distortion

signal-to-noise ratioIF RSSI output, R9 = 2 k: [1]RSSI range

Zi(IF)Zo(IF)Zi(lim)Zo(lim)VO(lim)

IF input impedanceIF output impedancelimiter input impedancelimiter output impedance

limiter output voltagesystem SINAD sensitivity

[1]

ConditionsMin---

Typ1001007.0󰀂10

Max----

UnitMHzMHzdBdBm

mixer/oscillator section (external LO = 220 mVRMS)

f1 = 45.0; f2 = 45.06 MHz󰀁Input RF level = 󰀂52 dBmmatched 14.5 dBV step-up 50󰀁: sourcesingle-ended input(pin 20)

conversion power gain

RF input resistanceRF input capacitancemixer output resistance

10---1.25

17󰀅2.583.01.5

---4.0-

dBdBk:pFk:

50󰀁:󰀁source50 :󰀁source30 % AM 1 kHzgain of twoIF level = 󰀂110 dBm

---60--

44585012017󰀂55600.51.7601.50.31.50.313012

-------1.02.4-------

dBdBdBmVdBdBdBVVdBk:k:k:k:mVRMSdB

no modulation for noiseIF level = 󰀂110 dBmIF level = 󰀂50 dBmpin 18pin 16pin 14pin 11pin 11

RF level = 󰀂110 dBm

----1.3-1.3---

RF/IF section (internal LO)

The generator source impedance is 50 :, but the SA580 input impedance at pin 18 is 1500 :. As a result, IF level refers to the actual signal that enters the SA580 input (pin 18) which is about 21 dB less than the ‘available power’ at the generator.

Objective data sheetRev. 01 — 1 November 2004 6 of 16

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Philips Semiconductors

SA580

Low-voltage mixer FM IF system

12.Application information

C26R172.4 kFLT1FLT2C23C21C18C17R183.3 kC1520191817161514131211IF ampmixerOSCILLATORRSSIlimiterquadE1C1B45VREG6audio7R1110 k2310C8C9C2L1C7L2C6X1C10R1010 kC272.2 µFC12R1911 kC19390 pFC14IFT1C545 MHzinputRSSIoutputVCCaudio002aab126Fig 3.45 MHz application circuitTable 6:C1C2C5C6C7C8C9C10C12C14

9397 750 14161

Demoboard application component list

Value51 pF 220 pF 100 nF r󰀁10 % 5 pF to 30 pF 1 nF 10.0 pF 100 nF r 10 %10 PF 2.2 PF r 10 % 100 nF r 10 %

TypeNPO ceramicNPO ceramicmonolithic ceramictrim capceramicNPO ceramicmonolithic ceramictantalum (minimum) [1]tantalum

monolithic ceramic

Component

Objective data sheetRev. 01 — 1 November 2004 7 of 16

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Philips Semiconductors

SA580

Low-voltage mixer FM IF system

Demoboard application component list …continued

Value10 pF 100 nF r 10 % 100 nF r 10 % 390 pF r󰀁10 % 100 nF r󰀁10 % 100 nF r 10 %100 nF r󰀁10 % 2.2 PF --330 PH 330 nH 1.2 PH nominal 44.545 MHz

not used in application board (see list item 8 on page 9)8.2 k r 5 % 10 k r󰀁5 %2.4 k r 5 %3.3 k r 5 % 11 k r 5 %

TypeNPO ceramicmonolithic ceramicmonolithic ceramicmonolithic ceramicmonolithic ceramicmonolithic ceramicmonolithic ceramictantalum

ceramic filter Murata CFUCF455KB4X-R0 or equivalent

TOKO 836AN-0129ZTOKO A638AN-0158ZFSLM2520-12Kcrystal ICM4712701-

Table 6:C15C17C18C19C21C23C26C27FLT1FLT2IFT1L1L2X1R5

Component

R10R11R17R18R19

[1]

1eW carbon composition4

This value can be reduced when a battery is the power source.

Objective data sheetRev. 01 — 1 November 2004 8 of 16

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Philips Semiconductors

SA580

Low-voltage mixer FM IF system

13.Test information

RF GENERATOR45 MHzSA580 DEMOBOARDRSSIAUDIOVCC (+3)DE-EMPHASISFILTERDC VOLTMETERC–MESSAGESCOPEHP339A DISTORTIONANALYZER002aab127Fig 4.Application circuit test setupThe following list items 1 through 8 apply to Figure 4:

1.The C-message and de-emphasis filter combination has a peak gain of 10 for

accurate measurements. Without the gain, the measurements may be affected by the noise of the scope and HP339A analyzer. The de-emphasis filter has a fixed 󰀂6 dB/Octave slope between 300 Hz and 3 kHz.2.The ceramic filters can be 30 kHz SFG455A3s made by Murata which have 30 kHz IF bandwidth (they come in blue), or 16 kHz CFU455Ds, also made by Murata (they come in black). All specifications and testing are done with the wideband filter.3.Set your RF generator at 45.000 MHz, use a 1 kHz modulation frequency and a 6 kHz deviation if you use 16 kHz filters, or 8 kHz if you use 30 kHz filters.4.The measured typical sensitivity for 12 dB SINAD should be 0.45 PV or 󰀂114 dBm at the RF input.5.The layout is very critical in the performance of the receiver. We highly recommend our demo board layout.6.The smallest RSSI voltage (i.e., when no RF input is present and the input is

terminated) is a measure of the quality of the layout and design. If the lowest RSSI voltage is 500 mV or higher, it means the receiver is in regenerative mode. In that case, the receiver sensitivity will be worse than expected.7.All of the inductors, the quad tank, and their shield must be grounded. A 10 PF to 15 PF or higher value tantalum capacitor on the supply line is essential. A low

frequency ESR screening test on this capacitor will ensure consistent good sensitivity in production. A 0.1 PF bypass capacitor on the supply pin, and grounded near the 44.545 MHz oscillator improves sensitivity by 2 dB to 3 dB.8.R5 can be used to bias the oscillator transistor at a higher current for operation above 45 MHz. Recommended value is 22 k:, but should not be below 10 k:.

Objective data sheetRev. 01 — 1 November 2004 9 of 16

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Philips Semiconductors

SA580

Low-voltage mixer FM IF system

6ICC(mA)5VCC = 7 V002aab12820IF outputpower (dBm)0002aab130RF = 45 MHzIF = 455 kHz−20−4045 V−60(1)(2)3−55−35−15525456585105125t (°C)−80−662661434RF(3) input level (dBm)(1)Fund product(2)3rd order product(3)50 X inputFig 5.ICC vs. temperature and supply voltageFig 6.Mixer third order intercept and compression5(dB)−5−15−25001aab131(1)1.9(V)1.585 °C27 °C−40 °C002aab1321.1−35(2)−45(3)0.7−55−65−125(4)−105−85−65−45−25RFlevel (dBm)0.3−125−105−85−65−45RFlevel (dBm)VCC = 5 V; RF = 45 MHz; deviation = rÃ5 kHz; audio level = 117.6 mVRMS(1)Audio(2)AM rejection(3)THD + noise(4)NoiseFig 7.Sensitivity vs. RF level (+25 qC)Fig 8.RSSI vs. RF level and temperature (VCC = 5 V)9397 750 14161© Koninklijke Philips Electronics N.V. 2004. All rights reserved.

Objective data sheetRev. 01 — 1 November 2004 10 of 16

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Philips Semiconductors

SA580

Low-voltage mixer FM IF system

300mVRMSVCC = 7 V250002aab1332005 V150100−55−35−15525456585105125t (°C)Fig 9.Audio output vs. temperature and supply voltage9397 750 14161© Koninklijke Philips Electronics N.V. 2004. All rights reserved.

Objective data sheetRev. 01 — 1 November 2004 11 of 16

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Philips Semiconductors

SA580

Low-voltage mixer FM IF system

14.Package outline

SSOP20: plastic shrink small outline package; 20 leads; body width 4.4 mmSOT266-1DEAXcyHEvMAZ2011QA2pin 1 indexA1(A )3θLpLA1ebp10wMdetail X02.5scale5 mmDIMENSIONS (mm are the original dimensions)UNITmmNote1. Plastic or metal protrusions of 0.20 mm maximum per side are not included. OUTLINEVERSION SOT266-1 REFERENCES IEC JEDEC MO-152 JEITAEUROPEANPROJECTIONAmax.1.5A10.150A21.41.2A30.25bp0.320.20c0.200.13D(1)6.66.4E(1)4.54.3e0.65HE6.66.2L1Lp0.750.45Q0.650.45v0.2w0.13y0.1Z(1)0.480.18θ10o0oISSUE DATE99-12-2703-02-19Fig 10.Package outline SOT266-1 (SSOP20)

9397 750 14161

Objective data sheetRev. 01 — 1 November 2004 12 of 16

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Philips Semiconductors

SA580

Low-voltage mixer FM IF system

15.Abbreviations

Table 7:AcronymACAMESDFMIFLCLORFRSSISINADTHDXTAL

Abbreviations

DescriptionAlternating CurrentAmplitude ModulationElectrostatic DischargeFrequency ModulatorIntermediate FrequencyInductor-Capacitor CircuitLocal OscillatorRadio Frequency

Received Signal Strength IndicatorSignal, Noise And DistortionTotal Harmonic DistortionCrystal

Objective data sheetRev. 01 — 1 November 2004 13 of 16

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SA580

Low-voltage mixer FM IF system

16.Revision history

Table 8:

Revision history

Release date200410xx

Data sheet statusObjective

Change notice-Doc. number9397 750 14161

Supersedes-Document IDSA580_1

Objective data sheetRev. 01 — 1 November 2004 14 of 16

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SA580

Low-voltage mixer FM IF system

17.Data sheet status

LevelIII

Data sheet status [1]Objective dataPreliminary data

Product status [2] [3]DevelopmentQualification

Definition

This data sheet contains data from the objective specification for product development. Philips

Semiconductors reserves the right to change the specification in any manner without notice.

This data sheet contains data from the preliminary specification. Supplementary data will be published at a later date. Philips Semiconductors reserves the right to change the specification without notice, in order to improve the design and supply the best possible product.

This data sheet contains data from the product specification. Philips Semiconductors reserves the right to make changes at any time in order to improve the design, manufacturing and supply. Relevant changes will be communicated via a Customer Product/Process Change Notification (CPCN).

IIIProduct dataProduction

[1][2][3]

Please consult the most recently issued data sheet before initiating or completing a design.

The product status of the device(s) described in this data sheet may have changed since this data sheet was published. The latest information is available on the Internet at URL http://www.semiconductors.philips.com.

For data sheets describing multiple type numbers, the highest-level product status determines the data sheet status.

18.Definitions

Short-form specification — The data in a short-form specification is extracted from a full data sheet with the same type number and title. For detailed information see the relevant data sheet or data handbook.

Limiting values definition — Limiting values given are in accordance with the Absolute Maximum Rating System (IEC 60134). Stress above one or more of the limiting values may cause permanent damage to the device. These are stress ratings only and operation of the device at these or at any other conditions above those given in the Characteristics sections of the specification is not implied. Exposure to limiting values for extended periods may affect device reliability.

Application information — Applications that are described herein for any of these products are for illustrative purposes only. Philips Semiconductors make no representation or warranty that such applications will be suitable for the specified use without further testing or modification.

19.Disclaimers

Life support — These products are not designed for use in life support appliances, devices, or systems where malfunction of these products can reasonably be expected to result in personal injury. Philips Semiconductors customers using or selling these products for use in such applications do so at their own risk and agree to fully indemnify Philips Semiconductors for any damages resulting from such application.

Right to make changes — Philips Semiconductors reserves the right to make changes in the products - including circuits, standard cells, and/or software - described or contained herein in order to improve design and/or performance. When the product is in full production (status ‘Production’), relevant changes will be communicated via a Customer Product/Process Change Notification (CPCN). Philips Semiconductors assumes no

responsibility or liability for the use of any of these products, conveys no license or title under any patent, copyright, or mask work right to these

products, and makes no representations or warranties that these products are free from patent, copyright, or mask work right infringement, unless otherwise specified.

20.Contact information

For additional information, please visit: http://www.semiconductors.philips.com

For sales office addresses, send an email to: sales.addresses@www.semiconductors.philips.com

Objective data sheetRev. 01 — 1 November 2004 15 of 16

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21.Contents

1Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12General description. . . . . . . . . . . . . . . . . . . . . . 13Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14Applications. . . . . . . . . . . . . . . . . . . . . . . . . . . . 15Ordering information. . . . . . . . . . . . . . . . . . . . . 26Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . 27Pinning information. . . . . . . . . . . . . . . . . . . . . . 27.1Pinning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27.2Pin description . . . . . . . . . . . . . . . . . . . . . . . . . 38Functional description . . . . . . . . . . . . . . . . . . . 39Limiting values. . . . . . . . . . . . . . . . . . . . . . . . . . 510Static characteristics. . . . . . . . . . . . . . . . . . . . . 511Dynamic characteristics. . . . . . . . . . . . . . . . . . 612Application information. . . . . . . . . . . . . . . . . . . 713Test information. . . . . . . . . . . . . . . . . . . . . . . . . 914Package outline. . . . . . . . . . . . . . . . . . . . . . . . 1215Abbreviations. . . . . . . . . . . . . . . . . . . . . . . . . . 1316Revision history. . . . . . . . . . . . . . . . . . . . . . . . 1417Data sheet status. . . . . . . . . . . . . . . . . . . . . . . 1518Definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1519Disclaimers. . . . . . . . . . . . . . . . . . . . . . . . . . . . 1520

Contact information . . . . . . . . . . . . . . . . . . . . 15

SA580

Low-voltage mixer FM IF system

All rights are reserved. Reproduction in whole or in part is prohibited without the prior written consent of the copyright owner. The information presented in this document does not form part of any quotation or contract, is believed to be accurate and reliable and may be changed without notice. No liability will be accepted by the publisher for any consequence of its use. Publication thereof does not convey nor imply any license under patent- or other industrial or intellectual property rights.

Date of release: 1 November 2004Document number: 9397 750 14161

Published in The U.S.A.

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