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ICL7109 12-Bit Micro Compatible A/D Converter Datasheet

Photograph
ICL7109 - ICL7109 12-Bit Microprocessor Compatible A/D Converter

Product Details
  • 12-Bit Binary Dual Slope Integrating Analog-to-Digital Converter
  • Byte-Organized, TTL Compatible Three-State Outputs
  • RUN/HOLD Input and STATUS Output Can Be Used to Monitor and Control Conversion Timing
  • True Differential Input and Differential Reference
  • Operates At Up to 30 Conversions/s

Pin Layout
Intersil ICL7109 Pin Layout

Pin Description
Pin Number Description
1 GND - Digital Ground
2 STATUS - Status of Analog Conversion
3 POL - Polarity
4 OR - Overrange
5 B12 - Output Bit (Most Significant)
6 B11 - Output Bit
7 B10 - Output Bit
8 B9 - Output Bit
9 B8 - Output Bit
10 B7 - Output Bit
11 B6 - Output Bit
12 B5 - Output Bit
13 B4 - Output Bit
14 B3 - Output Bit
15 B2 - Output Bit
16 B1 - Output Bit (Least Significant)
17 TEST - Test Function
18 LBEN - Low Byte Enable
19 HBEN - High Byte Enable
20 CE/LOAD - Chip Enable/Load
21 MODE - See Datasheet
22 OSC IN - Oscillator Input
23 OSC OUT - Oscillator Output
24 OSC SEL - Oscillator Select
25 BUF OSC OUT - Buffered Oscillator Output
26 RUN/HOLD - A/D Conversion
27 SEND - Data Send Signal Input
28 V- - Analog Negative Supply
29 REF OUT - Reference Voltage Output
30 BUFFER - Buffer Amplifier Output
31 AUTO-ZERO - Auto-Zero Mode
32 INTEGRATOR - Integrator Output
33 COMMON - Analog Common
34 INPUT LO - Differential Input Low
35 INPUT HI - Differential Input High
36 REF IN + - Differential Input Reference (Positive)
37 REF CAP + - Reference Capacitor (Positive)
38 REF CAP - - Reference Capacitor (Negative)
39 REF IN - - Differential Input Reference (Negative)
40 V+ - Positive Supply Voltage

Dimensional Drawing
ICL7109 DIP40 Dimension Drawing
ICL7109 DIP40 Dimension Drawing