XRD87L94AIP View Datasheet(PDF) - Exar Corporation

Part Name

Description

MFG CO.

XRD87L94AIP

CMOS, 1 MSPS, 12-Bit Analog-to-Digital Converter with Parallel Logic Interface Port

Exar Corporation 

1 2 3 4 5 6 7 8 9 10 Next

1.6V maximum per tap is recommended for applications

above 85°C. Up to 3.2V is allowed for applications under 85°C.

4095

3072

V4

Digital

Code

2048

V3

1024

V2

V1

0

0.5 V

1V

2V

3V

VIN

Figure 6. A Piecewise Linear Transfer Function

XRD87L94

V4

DAC4

V3

DAC3

V2

DAC2

V1

DAC1

DAC MP7226

VRT

R3

R2 XRD87L94

R1

VRB

Only the Ladder detail shown.

Figure 7. A/D with Programmed Ladder

Control for Creating a Piecewise Linear

Transfer Function

Rev. 1.00

7

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