Philips SA1630 Datasheet

INTEGRATED CIRCUITS

SA1630

IF quadrature transceiver

Product specification Supersedes data of 1998 Jul 21 IC17 Data Handbook

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2000 Oct 23

Philips Semiconductors Product specification

SA1630IF quadrature transceiver

DESCRIPTION

The SA1630 is a 70–400 MHz I/Q transceiver for wireless LAN. The Receive Path contains a digitally gain controlled linear IF amplifier, a pair of quadrature down conversion mixers and a pair of baseband amplifiers. The transmit path contains a pair of quadrature up conversion mixers that transposes a quadrature baseband input signal up to IF frequency. An external VCO signal is divided internally and provides quadrature local oscillator signals for the mixers. Another divider chain, reference divider and phase detector are provided to avoid the need for an external synthesizer. To keep power consumption to a minimum the transmit, receive and local oscillator functions can be powered down under digital control.

FEA TURES

•Low supply voltage operation of 2.7 V for main chip and

2.9 V for charge pump.

•Low current consumption: 33.5 mA in RX, 26.5 mA in TX, typical

at 3 V.

•Flexible power up/down options.

•Optional 2.5 V regulated reference voltage available during

transmit.

•Input IF frequency range of 70–400 MHz.

BE Package

IF IN

IF INX

GNDRX

PLL_ON

Rx_ON

GNDHDR

GC0 GC1 GC2 GC3 GC4 GC5

GNDRx

1 2 3

4 5 6 7 8

9 10 11 12

13 14 15 16 17 18 19

GNDRxRxRx

GNDRXTxTx

45464748

•Internal IF PLL for synthesizing the local IF oscillator signal.

•Bandwidth of baseband Tx inputs is 20 MHz and that of baseband

Rx outputs is 8.5 MHz.

•Designed for IEEE 802.11 wireless LAN using Direct Sequence

Spread Spectrum modulation.

•Control registers power up in a default state.

•Only a standard reference input frequency required, choice of 8,

11, 22 or 44 MHz.

•Digital gain control of 70 dB in steps of 2 dB.

•Rx Baseband amplifiers are capable of driving 1 kW ||15 pF

•Rx Baseband o/p’s clamp symmetrically, above 1 Vp–p in order to

prevent dc bias shift under overdrive conditions.

•Package: LQFP48, PCMCIA compatible

APPLICATIONS

•IF circuitry for IEEE 802.11 DSSS wireless LAN.

•Applications for high speed wireless data.

IFOUT

IFOUTX

424344

20 21 22 23 24

GNDTxRx

V TxRx

394041 3738

REF

V 2.5

36 35 34 33 32 31 30 29 28 27 26 25

GNDCP CP V CP

DATA CLOCK STROBE LOCK LO_INX LO_IN GNDRx CLK IN CLK

INX

GND_BB

V _BB

Q_RxOUT

I_Tx_IN

I_RXOUT

Q_Tx IN

I_Tx_INX

Q_Tx INX

V _DIG

Tx_ON

GNDDIG

SR01549

Figure 1. Pin Configuration

ORDERING INFORMATION

DESCRIPTION TEMPERATURE RANGE ORDER CODE DWG #

48–Pin Plastic Low Profile Quad Flat package –40 to +85 °C SA1630BE SOT313–2

2000 Oct 23 853–2049 24857

Philips Semiconductors Product specification

SA1630IF quadrature transceiver

(46)

(45)

(10) (11) (12)

(4)

PLL–ON

IFOUT

IFOUTX

LO IN

LO INX

XON

MODE

CONTROL

(5)

(23)

(43)

(42)

(7)

GC0

(8)

GC1

(9)

GC2

IFIN

IFINX

GC3 GC4 GC5

(28) (29)

(38)

2.5V REGULATOR

BUFFERS

2.5

REF

(1,3)

VCCR

(39)

VCCTXR

GND_BB

VCC_BB

I_Tx

INX

Q_Tx

INX

I_Rx

Q_Rx

OUT

(13, 14)

(15)

(18) (19)

(20) (21)

(17)

(16)

(34)

(35)

(37)

(30)

(36)

CCCP

REF

LOCK

GNDCP

CHARGE

8, 11, 22, 44

CLK

DAC

PUMP

PHASE

DETECTOR

TEST REGISTER

INX

CCDIG

GND DIGCLK

Figure 2. Block Diagram

SYNTH

SERIAL

INPUT

DATA CLOCK STROBE

(2, 27, 44, 47, 48)(31)(32)(33)(24)(22)(25)(26)

GND RX

GND HDR

GNDTXR

(6)

(40, 41)

SR01551

2000 Oct 23

Philips Semiconductors Product specification

SA1630IF quadrature transceiver

PIN DESCRIPTIONS

Pin No. Pin Name Description

1, 3 VCCRx Supply Pin for Rx section (IF circuits)

2, 27,

44,47,

13, 14 GND_BB Ground pin for Rx baseband circuits

40,41 GNDTxRx Ground pins used by Tx circuits

GNDRx Ground pins for Rx section (IF circuits)

4 PLL_ON One of the three digital CMOS logic control inputs to the mode control section 5 Rx_ON One of the three digital CMOS logic control inputs to the mode control section 6 GNDHDR Substrate ground 7 GCO Control bit 0 for IF VGA gain control, CMOS input 8 GC1 Control bit 1 for IF VGA gain control, CMOS input

9 GC2 Control bit 2 for IF VGA gain control, CMOS input 10 GC3 Control bit 3 for IF VGA gain control, CMOS input 11 GC4 Control bit 4 for IF VGA gain control, CMOS input 12 GC5 Control bit 5 for IF VGA gain control, CMOS input

15 VCC_BB Supply Pin for Rx Baseband circuits 16 Q_RXOUT Quadrature–phase Rx baseband output, single–ended 17 I_RxOUT In–phase Rx baseband output, single–ended 18 I_Tx IN In–phase differential Tx baseband input, positive 19 I_Tx INX In–phase dif ferential Tx baseband input, negative 20 Q_Tx IN Quadrature differential Tx baseband input, positive 21 Q_Tx INX Quadrature differential Tx baseband input, negative 22 VCC_DIG Supply for digital circuits 23 Tx_ON One of the Three digital CMOS logic control inputs to the mode control section 24 GNDDIG Digital ground 25 CLK INX Dif ferential reference input for synthesizer, negative 26 CLK IN Differential reference input for synthesizer, positive 28 LO_IN Differential LO input,positive 29 LO INX Differential LO input, negative 30 LOCK Test control output and synthesizer lock indicator 31 STROBE Serial bus strobe input 32 CLOCK Serial bus clock input 33 DATA Serial bus data input 34 VCCCP Supply for charge pump circuits 35 CP Charge pump output 36 GNDCP Ground for charge pump circuits 37 I

REF

38 V 39 VCCTxRx Supply pin used by Tx circuits

42 TxIFOUTX Differential transmitter IF output (open collector), positive 43 TxIFOUT Differential transmitter IF output (open collector), negative 45 RxIF INX Differential receiver IF input, negative 46 RxIF IN Differential receiver IF input, positive

2.5 Reference voltage of 2.5V available for external use

REF

Charge pump reference current

2000 Oct 23

Philips Semiconductors Product specification

SA1630IF quadrature transceiver

ABSOLUTE MAXIMUM RATINGS

SYMBOL PARAMETER RATING UNITS

CCXX

∆VG Any GND pin to any other GND pin 0 V

JMAX

MAX

stg

RECOMMENDED OPERATING CONDITIONS

SYMBOL PARAMETER RATING UNITS

CCXXXX

VCCCP Charge pump supply voltage 2.7 to 3.6 V

amb

NOTES:

1. There are no ESD protection diodes between pins 42, 43 and V reduced. Proper ESD handling precautions should be followed.

MODE CONTROL

NO: PLL_ON RX_ON TX_ON STATE DESCRIPTION MODE 2.5 V REF

1 0 X X SLEEP mode SLEEP Off 2 1 0 1 Synthesizer ON, Rx STDBY, Tx OFF WAIT Off 3 1 1 1 Synthesizer ON, Rx STDBY, Tx ON TRANSMIT On 4 1 1 0 Synthesizer ON, Rx ON, Tx OFF RECEIVE Off 5 1 0 0 Synthesizer ON, Rx OFF, Tx ON TRANSMIT Off

‘0’ – Logic LOW ‘1’ – Logic HIGH ‘X’ – Don’t Care

Supply voltages –0.3 to +6.0 V Voltage applied to any other pin –0.3 to V

Power dissipation, TA = 25°C (still air) 300 mW Maximum operating junction temperature 150 °C Maximum power input/output +20 dBm Storage temperature range –65 to +150 °C

Supply voltages: 2.7 to 3.6 V

Operating ambient temperature range –40 to +85 °C

to allow higher AC peak voltage. The ESD protection level has thus been

+0.3 V

CCXX

1. Sleep mode (PLL OFF, Rx OFF, Tx OFF)

In this mode everything is switched off except the 3–wire digital bus. As long as the digital supply is still on, the programmed values are active and the 3–wire bus will continue to be programmable.

2. Wait Mode (Tx Off, Rx Standby)

PLL is on. Receiver is in the reduced current standby mode and the transmitter is completely switched off. This mode maybe useful if the PLL is to be kept on and is waiting for a quick turn–on to either transmit or receive modes, especially when Rx outputs are AC coupled.

3. Transmit mode (Rx standby)

The PLL and transmitter are on. The receive section is in a reduced current mode wherein most of the Rx circuitry is powered down

except for the bias and baseband circuits needed to hold the baseband output voltages in the active state. This mode is useful if the Rx baseband outputs are AC coupled via a large capacitor and the application demands quick turn–on for the Rx, from Tx.

4. Receive Mode (Tx Off)

The Transmitter is completely shut–off. The PLL and receiver sections are operating.

5. Transmit Mode (Rx OFF)

PLL and Transmit sections are on. However, the Receiver is completely shut–down. This mode is useful if the Rx baseband outputs are DC coupled to the external world.

2000 Oct 23

Philips Semiconductors Product specification

SA1630IF quadrature transceiver

RX VGA CONTROL TABLE

GC5 GC4 GC3 GC2 GC1 GC0 DECIMAL NUMBER

0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 –2 0 0 0 0 1 0 2 –4 0 0 0 0 1 1 3 –6 0 0 0 1 0 0 4 –8 0 0 0 1 0 1 5 –10 0 0 0 1 1 0 6 –12 0 0 0 1 1 1 7 –14 0 0 1 0 0 0 8 –16 0 0 1 0 0 1 9 –18 0 0 1 0 1 0 10 –20 0 0 1 0 1 1 11 –22 0 0 1 1 0 0 12 –24 0 0 1 1 0 1 13 –26 0 0 1 1 1 0 14 –28 0 0 1 1 1 1 15 –30 0 1 0 1 1 1 23 –32 0 1 1 0 0 0 24 –34 0 1 1 0 0 1 25 –36 0 1 1 0 1 0 26 –38 0 1 1 0 1 1 27 –40 0 1 1 1 0 0 28 –42 0 1 1 1 0 1 29 –44 0 1 1 1 1 0 30 –46 0 1 1 1 1 1 31 –48 1 1 0 1 0 0 52 –50 1 1 0 1 0 1 53 –52 1 1 0 1 1 0 54 –54 1 1 0 1 1 1 55 –56 1 1 1 0 0 0 56 –58 1 1 1 0 0 1 57 –60 1 1 1 0 1 0 58 –62 1 1 1 0 1 1 59 –64 1 1 1 1 0 0 60 –66 1 1 1 1 0 1 61 –68 1 1 1 1 1 0 62 –70

REDUCTION FROM Gmax

2000 Oct 23

Philips Semiconductors Product specification

SYMBOL

PARAMETER

TEST CONDITION

UNITS

SA1630IF quadrature transceiver

DC ELECTRICAL CHARACTERISTICS

VCCXXX=+3 V; VEEXXX = 0V; T

CC–4

CC–2

CC–3

CC–1

CC–5

REF

OUT_VREF

Supply Current, Receive (mode #4)

Supply Current, Wait (mode #2)

Supply Current, Transmit (mode #3)

Supply Current, Sleep mode (mode #1)

Supply current transmit (mode 5)

_2.5 Reference voltage (mode 3, enabled) Load = 1.5 mA 2.5 V

Output impedance of reference voltage ∆I = 1.4 to 1.6 mA 15

CMOS LOGIC INPUTS (DATA, CLOCK, STROBE)

Input logic 1 level 2.0 V Input logic 0 level 0 0.8 V

Input logic current 1 µA

Input logic capacitance 4 pF

CMOS Logic output (LOCK)

Output logic 1 level IO = –2 mA V Output logic 0 level IO = 2 mA 0.4 V

CMOS Logic Inputs (PLL_ON, RX_ON, TX_ON)

Input logic 1 level Input logic 0 level 0 0.8 V

Input logic current 1 µA

= 25 °C, unless otherwise stated.

amb

PLL_ON=Rx_ON=Hi

Tx_ON = Low

Wait mode (2)

PLL_ON = Hi

Tx_ON = Hi

Rx_ON = Low

PLL_ON = TX_ON = Hi

RX_ON = Hi

PLL_ON = Low

RX_ON = DC TX_ON = DC

PLL_ON = Hi

TX_ON = RX_ON = Low

LIMITS

MIN TYP MAX

33.5 41.5 mA

17 23 mA

26.5 34.5 mA

0.012 0.1 mA

22 28.5 mA

CCD

–0.4 V

CCD

2.0

CCTXRX



2000 Oct 23

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