®

DSP101/102

6

DSP102 PIN ASSIGNMENTS

PIN #

NAME

DESCRIPTION

1

VPOTA

Channel A Trim Reference Out. 10

µF Tantalum to

AGND. Voltage on this pin is approximately 2.75V.

2

VINA

Channel A Analog In.

3

MSBA

Channel A MSB Adjust In.

4

VOSA

Channel A VOS Adjust In.

–5V Analog Power.

+5V Analog Power.

7

DGND

Digital Ground.

8

DGND

Digital Ground.

+5V Digital Power.

10

CLKIN

Conversion Clock In.

11

CLKOUT

Conversion Clock Out. Can drive multiple DSP101/

DSP102s to synchronize conversion.

12

SSF

Select Synch Format In. If HIGH, SYNC will be

active High. If LOW, SYNC will be active Low. See

timing diagram (Figure 1).

13

OSC1

Oscillator Point 1 Input / External Clock In. If using

external clock, drive with 74HC logic levels.

Connect to DGND if not used.

14

OSC2

Oscillator Point 2 Output. Provides drive for crystal

oscillator. Make no electrical connection if using

external clock.

15

SYNC

Data Synchronization Out. Active High when SSF

is HIGH; active Low when SSF is LOW.

16

XCLK

Data Transfer Clock In.

17

SOUTB

Channel B Serial Data Out. MSB first, Binary

Two’s Complement format.

18

TAGA

Channel A User Tag In. Data clocked into this pin

is appended to the conversion results of SOUTA.

See timing diagram (Figure 1).

19

TAGB

Channel B User Tag In. Data clocked into this pin

is appended to the conversion results of SOUTB.

See timing diagram (Figure 1).

20

SOUTA

Channel A Serial Data Out. MSB first, Binary

Two’s Complement format. If CASC is HIGH, 32

bits of data output, with first 16 bits being Channel

A data.

21

CONV

Convert Command In. Falling edge puts converter

into hold state, initiates conversion, and transmits

previous conversion results to DSP IC with

appropriate SYNC pulse.

22

CASC

Select Cascade Mode In. If HIGH, DSP102

transmits a 32-bit word on SOUTA, with the first 16

bits being data on Channel A. If LOW, DSP102

transmits data for both channels simultaneously.

23

VOSB

Channel B VOS Adjust In.

24

MSBB

Channel B MSB Adjust In.

25

VINB

Channel B Analog In.

26

VPOTB

Channel B Trim Reference Out. 10

µF Tantalum to

AGND. Voltage on this pin is approximately 2.75V.

27

REF

Reference Bypass. 0.1

µF Ceramic to AGND.

Voltage on this pin is approximately 3.8V.

28

AGND

Analog Ground.

DSP102 PIN CONFIGURATION

The information provided herein is believed to be reliable; however, BURR-BROWN assumes no responsibility for inaccuracies or omissions. BURR-BROWN assumes

no responsibility for the use of this information, and all use of such information shall be entirely at the user’s own risk. Prices and specifications are subject to change

without notice. No patent rights or licenses to any of the circuits described herein are implied or granted to any third party. BURR-BROWN does not authorize or warrant

any BURR-BROWN product for use in life support devices and/or systems.

Top View

DIP

1

2

3

4

5

6

7

8

9

10

11

12

13

14

28

27

26

25

24

23

22

21

20

19

18

17

16

15

VPOTA

VINA

MSBA

VOSA

V

V

DGND

DGND

V

D

CLKIN

CLKOUT

SSF

OSC1

OSC2

AGND

REF

VPOTB

VINB

MSBB

VOSB

CASC

CONV

SOUTA

TAGB

TAGA

SOUTB

XCLK

SYNC

DSP102

ORDERING INFORMATION

NUMBER

SIGNAL-TO-

OF

(NOISE + DIST.) RATIO

MODEL

CHANNELS

dB min

DSP101JP

1

83

DSP101KP

1

86

DSP102JP

2

83

DSP102KP

2

86

PACKAGE INFORMATION

PACKAGE DRAWING

MODEL

PACKAGE

DSP101JP

28-Pin Plastic DIP

215

DSP101KP

28-Pin Plastic DIP

215

DSP102JP

28-Pin Plastic DIP

215

DSP102KP

28-Pin Plastic DIP

215

NOTE: (1) For detailed drawing and dimension table, please see end of data

sheet, or Appendix D of Burr-Brown IC Data Book.