Philips Semiconductors

Product specification

SA1638

Low voltage IF I/Q transceiver

1997 Sept 03

4

PIN DESCRIPTIONS

Pin No.

Pin Name

Description

1

VREG1

Output voltage of regulator 1

2

VREGF2

Feedback of regulator 2

3

VREG2

Output voltage of regulator 2

4

GNDREG2

Ground of regulator 2

5

PON

Power-on input for voltage regulators 1 and 2 (active high)

6

Input voltage for regulators 1 and 2

7

AOUT

Programmable logic output (see Figure 9)

8

BOUT

Programmable logic output (see Figure 9)

9

DCRES

Reference current setting resistor for DC offset circuit

10

RESD

Additional external current defining resistor for filters

11

RESA

Principal external current defining resistor for filters

12

RESB

Principal external current defining resistor for filters

13

PONRx

Power-on input for Rx (active high)

14

Reference voltage

15

QRxOUT

Differential receive baseband output

16

QRxOUTX

Differential receive baseband output

17

IRxOUT

Differential receive baseband output

18

IRxOUTX

Differential receive baseband output

19

QTx IN

Differential transmit baseband input

20

QTx INX

Differential transmit baseband input

21

ITx IN

Differential transmit baseband input

22

ITx INX

Differential transmit baseband input

23

PDTx

Power-on for transmitter (active low)

24

Digital circuit supply

25

Digital ground

26

DATA

Serial bus data input

27

CLOCK

Serial bus clock input

28

STROBE

Serial bus strobe input

29

LOCK

Test control/synthesizer lock indicator

30

CLK INX

Differential reference divider input

31

CLK IN

Differential reference divider input

32

ADJ IN

Used for test only. Do not connect

33

LO IN

Differential LO input

34

LO INX

Differential LO input

35

Reference current setting for charge pump

36

Charge pump ground

37

CP

Charge pump output

38

Charge pump circuit supply

39

POnPLL

Power-on input for synthesizer circuits (active high)

40

GND3

Ground (internal connection to GND1 and GND2)

41

TxIFOUTX

Differential transmit IFoutput (open collector)

42

TxIFOUT

Differential transmit IFoutput (open collector)

43

GND2

Ground (internal connection to GND1 and GND3)

44

RxIF INX

Differential receive IF input

45

RxIF IN

Differential receive IF input

46

GND1

Ground (internal connection to GND2 and GND3)

47

Transmit and receive circuits supply voltage (also feedback of Regulator 1)

48

GNDREG1

Ground of regulator 1

NOTE: There are no ESD protection diodes at Pins 41 and 42. Thus, open collector outputs may have increased DC voltage or higher AC

peak voltage.