SGS Thomson Microelectronics STB4395 Datasheet

FULLYINTEGRATED DOUBLE SUPERHETERODYNERECEIVER

OPERATIONFROM 800MHz TO 1000MHz

RECEIVEROUTPUTAS BITSTREAM

FULLYINTEGRATEDTRANSMITTER

TRANSMITTERINPUT I/Q/REFIQ

I/I, Q/Q

INTEGRATEDPOWER AMPLIFIER

CT2 PASWITCH-ON PROFILE INTEGRATED

VCO’s INTEGRATED

SYNTHESIZERSINTEGRATED

CHANNELSELECT LOGICON CHIP

INTEGRATED VOLTAGEREGULATION

SUPPLYVOLTAGESFROM 3.0V TO 5.5V

STB4395

CT2 RECEIVER/TRANSMITTER

ADVANCE DATA

DESCRIPTION

The STB4395(A) is a fully integrated receivertransmitter designed for CT2applications,and incorporatesall the VCO’s, synthesizers,PLLs, and channel select logic, to make a fully functional ”single chip” radio.

The receiver isof the doublesuperhetarchitecture and operatesfrom anaerial input (via a SAWfilter) to bitstreamoutput to CT2 format, whilstthetransmitter operates from I/Q inputs to +13dBm at the final frequency. A single (external)frequency reference is all that is required to give full coverage overtherangeof800to1000MHz.Theon-offslope of theTransmitPAisgovernedinternallytogivethe required switch-on ramp, whilst the output can be swiched from low to high power by means of an externaldigital controlsignal.

Thechannelselectiscontrolled fromadigital serial input, and allows continuous channel control from 800 to1000MHz.

The STB4395 exists in two versions: the STB4395, which has input/outputs, is designed to operate with the SGS-THOMSON baseband companion part, the ST5095. TheSTB4395Ahas a 3 wireI/Q interface and is compatiblewith commercially available I/Q transmitdata basebandIC’s.

I/I,Q/Q

transmit data

TQFP64

(Plastic Package)

ORDER CODE : STB4395 or STB4395A

April 1996

This is advance informationon a newproduct now in development or undergoingevaluation. Detailsare subject to change without notice.

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STB4395

CONTENT Page

1 PIN DESCRIPTION..................................................... 3

1.1 PIN CONNECTIONS. . . . .. . . . . . . . . . . . . . . . . . ............................. 4

1.2 PIN LIST . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . ............................. 5

1.3 ANALOGAND FILTERPINS . . . . . . . . . . . . . . . . ............................. 5

1.4 DIGITAL, SIGNALAND CONTROL PINS. . . . . . . . . . .......................... 6

1.5 POWERSUPPLY PINS . ................................................ 6

2 BLOCKDIAGRAM..................................................... 7

3 FUNCTIONAL DESCRIPTION............................................ 8

3.1 RECEIVER . . . . . . . . . . . ................................................ 8

3.2 TRANSMITTER. . . . . ................................................... 8

3.3 CHANNEL SELECTCONTROL LOGIC. . . . .. . . . . . . . . . . . . ................... 8

4 ABSOLUTEMAXIMUM RATINGS......................................... 8

5 POWERSUPPLIES .................................................... 9

5.1 SUPPLIES. . . . . .. . . ................................................... 9

5.2 GROUND PLANECONNECTIONS . ....................................... 9

6 ELECTRICAL CHARACTERISTICS ....................................... 9

7 TIMING INFORMATION................................................. 9

7.1 TURN ON-OFF TIMES . . . . . . . . . . . ....................................... 9

7.2 CHANNEL SELECTTIMING . . . . ......................................... 9

8 TRANSCEIVER SECTION ............................................... 10

8.1 RECEIVER-INPUT SPECIFICATION. . . . . . . . . .. . . . . . . . . .................... 10

8.2 TRANSMITTER OUTPUTSPECIFICATION . .. . . . . .. . . . . .................... 11

8.3 SYNTHESIZER/MODULATOR/CHANNELSELECTLOOP. . . ................... 11

8.3.1 Synthesizerphase noiseand spurious . . . . . . . . .. . . . . . .. . . . . . . . .. . . . . . . . . .. . . 11

8.3.2 Channelselect loop. . . . . . . . .. . . ......................................... 11

8.3.3 Channel frequencysetting . . . . . . . . ....................................... 12

8.4 SYSTEM CLOCKINPUT . . . . . . . . . ....................................... 13

8.5 RECEIVER-RF INPUT. . . . . . . . . . . ....................................... 13

8.6 DIGITALINPUTBUFFERS. . . . . . . . ....................................... 13

8.7 DIGITALOUTPUTBUFFERS. . . . . . ....................................... 13

8.8 RECEIVER-FSH TRI STATE INPUT. . . . . . . . . . . . . . . . ....................... 13

8.9 RECEIVER-RSSI OUTPUT . . . . . . . ....................................... 14

8.10 POWERDOWN BUFFER. . . . . . . . . ....................................... 14

8.11 TRANSMITTER - DATAINPUTS . . . .. . . . . . . . .. . . . . . . . . .................... 14

8.11.1 STB4395A.. . . . . ...................................................... 14

8.11.2 STB4395............................................................. 14

9 APPLICATIONS....................................................... 15

9.1 TYPICALDC CONNECTION SCHEMES. . . . . . . . . . .. . ....................... 15

9.1.1 Internal regulator....................................................... 15

9.1.2 External regulator . . . ................................................... 15

9.2 APPLICATIONCIRCUIT. . . . . . . . . . ....................................... 15

9.2.1 Introduction. . . . . . . .. . . . . . . . . . . . ....................................... 15

9.2.2 Applicationexample . . . . .. . . . . . . . .. . . . . . . . . ............................. 15

10 PACKAGE MECHANICAL DATA ......................................... 16

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1 - PIN DESCRIPTION

1.1 - Pin Connections

STB4395

STB4395A

NPRGEN

PRGCLK

PRGD

NTXEN

LOCK

VNOSC

VRO

VCOO

NVCOO

FLTRO

VND

64 63 62 61 60 59 58 57 56 55 54 53 52 51 50 49

1 2 3 4 5 6

8 9

10 11 12 13 14 15 16

17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32

VPO

VRD

VPD

SLTC

NTXFLT

FSH

ADJPWR

SHAPE

TXFLT

TQFP64

(from above )

VRS

VPS1

FLTRS

VPRF2

VCOS

NVCOS

NRF

VPS2

VPRF1

BRF3

VNPA

BRF1

VRRF

DISCI

NSAWI

SAWI

BRF2

DISCO

VNRF

VPI

VNIF

SAWO

NSAWO

VPIF

NIF2O

IF2O

DEC

IF2I

NIF2I

NDEC

VRIF

RSSISYNCLK

VRI

VCOI

NVCOI

FLTRI

4395-01.EPS

NPRGEN

PRGCLK

PRGD

NTXEN

LOCK

REFIQ

VNOSC

VRO

VCOO

NVCOO

FLTRO

VND

64 63 62 61 60 59 58 57 56 55 54 53 52 51 50 49

1 2 3 4 5 6

7 8

9 10 11 12 13 14 15 16

17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32

VPO

VRD

VPD

SLTC

NTXFLT

FSH

ADJPWR

SHAPE

TXFLT

TQFP64

(from above )

VRS

VPS1

FLTRS

VPRF2

VCOS

NVCOS

NRF

VPS2

VPRF1

BRF3

VNPA

BRF1

VRRF

DISCI

NSAWI

SAWI

BRF2

DISCO

VNRF

VPI

VNIF

SAWO

NSAWO

VPIF

NIF2O

IF2O

DEC

IF2I

NIF2I

NDEC

VRIF

RSSISYNCLK

VRI

VCOI

NVCOI

FLTRI

4395-02.EPS

3/16

STB4395

1 - PIN DESCRIPTION(continued)

1.2 - Pin List

Pin Name Description

1 NPRGEN Serial DataEnable 2 PRGCLK Serial DataClock 3 PRGD Serial Data Input 4 NTXEN Receive-Transmit Switch 5 LOCK VCO Lock Detect-all 3 PLL 6 I I - Transmit Quadrature Input 7 NI I - Transmit Quadrature Input STB4395 only 8 NQ Q-Transmit Quadrature Input STB4395 only 9 Q Q-Transmit QuadratureInput STB4395 only 7 REFIQ IQ Reference QuadratureTransmit Input STB4395A only 8 Q Q-Transmit QuadratureInput STB4395A only

9 FN Forces Data Slicer Reference Time Constant To fast STB4395A only 10 EN Power Down all functions except buffer 11 VNOSC Negative Power Supplyall VCO ’s 12 SYNCLK Synthesizer Clock Input f = 14.4MHz A.C. coupled 13 VRO PSU Regulated Negative Input for TX IF oscillator and pump circuit 14 VCOO TX oscillatortank circuit 15 NVCOO TX Oscillator Tank Circuit 16 FLTRO Loop Filterfor TX PLL 17 VPO Positive Battery Supply for TX oscillator 18 DO Receive Data Output 19 SLTC Slicer Time Constant Capacitor C= 33nF 20 FSH Data Slicer Time Constant Setting 21 FLTRS Loop Filter for channel PLL 22 VRS Regulated Negative Supply for channel oscillator and pump circuit 23 VPS1 Positive Battery Input for channel oscillator and pump circuit 24 NVCOS Channel Oscillator Tank Input 650 to 850MHz 25 VCOS Channel Oscillator Tank Input 650 to 850MHz 26 VPS2 Positive Battery Supply Input for channel oscillator and pump circuit 27 BRF3 Bit Rate Filter3 28 BRF1 Bit Rate Filter1 29 DISCI FM Discriminator Tank Circuit 30 DISCO FM Discriminator Tank Circuit 31 BRF2 Bit Rate Filter 2 32 VPI Positive Battery Supply for RXoscillator and pump circuit 33 FLTRI Loop Filterfor RX oscillator 34 NVCOI RX Oscillator Tank Circuit 35 VCOI RX OscillatorTank Circuit 36 VRI Regulated Negative Supply for RX oscillator and pump circuit 37 RSSI RSSI OUTPUT 38 VRIF Regulated Negative Supply Output forRX sections 39 NDEC RX IF2 Decoupling 40 NIF2I RX IF2 Filter Input 41 IF2I RX IF2 Filter Input 42 DEC RX IF2 Decoupling 43 IF2O RX IF2 Filter Output 44 NIF2O RX IF2 Filter Output 45 VPIF Positive Battery Supply Input for RX sections

Ext. Connectionand

Suppl. Information

4/16

STB4395

1 - PIN DESCRIPTION(continued)

1.2 - Pin List (continued)

Pin Name Description Ext. Connection and Suppl. Information

46 NSAWO RX FirstIF Amplifier Input 47 SAWO RX First IF AmplifierInput 48 VNIF Negative Battery Supply Input for RX sections 49 VNRF Negative Battery Supply Input for RF front end 50 SAWI RX First Mixer Output 51 NSAWI RX FirstMixer Output 52 VRRF Regulated Negative Supply for RF front end 53 VNPA Negative Supply for power amplifier 54 VPRF1 Positive Battery Supply for RF front end 55 NRF Input LNA/Output PA 56 RF Input LNA/Ouput PA 57 VPRF2 Positive Battery Supply for RF front end 58 ADJPWR Transmit Power Adjust R = 8.5kΩ to V 59 SHAPE Time Constant for PA on-off ramp C = 560pF 60 TXFLT Bandpass Filter for TX RF 61 NTXFLT Bandpass Filterfor TX RF 62 VPD Positive Battery Supply for digital circuitry 63 VRD Regulated NegativeSupply for digital circuitry 64 VND Negative Battery Supply for digital circuitry

RRF

1.3 - Analog and Filter Pins

Pin Symbol Description

58 ADJPWR Transmitter Output Power Adjust 28 BRF1 Bit RateFilter1 31 BRF2 Bit RateFilter2 27 BRF3 Bit RateFilter3

42, 39 DEC, NDEC RX IF2 Amplifier Decoupling

29 DISCI FM Discriminator Tank Circuit 30 DISCO FM Discriminator Tank Circuit 33 FLTRI Loop Filterfor RX PLL 16 FLTRO Loop Filterfor TX PLL 21 FLTRS Loop Filterfor Channel PLL

6, 7 I, NI(1) Transmit QuadratureInputs ((1)STB4395 only) 40, 41 IF2I, NIF2I Inputs from2nd IF Filter 43, 44 IF2O, NIF2O Outputs to 2nd IF Filter

8, 9 Q, NQ(1) Q-Transmit Quadrature Input ((1)STB4395 only)

7 REFIQ IQ Reference Quadrature Transmit Input (STB4395A only)

56, 55 RF, NRF Input RX LNA/Ouput TX PA

37 RSSI Received SignalStrength Indicator Output 50, 51 SAWI, NSAWI First Mixer Output 47, 46 SAWO, NSAWO First IF Amplifier Input

59 SHAPE Time Constant for PA on-off Ramp

19 SLTC Slicer Time Constant Capacitor

12 SYNCLK Synthesizer Clock Input 14.4MHz 60, 61 TXFLT/ NTXFLT Bandpass Filter for TX RF 35, 34 VCOI, NVCOI Tank Circuit for 152.1MHz RX Oscillator 14, 15 VCOO, NVCOO Tank Circuitfor 300.8MHz TX Oscillator 25, 24 VCOS, NVCOS Tank Circuitfor 650 to 850MHz Channel Oscillator

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