(CS5012A - CS5016) SELF CALIBRATING A/D CONVERTERS
Description
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CS5012A CS5014 CS5016 16-, 14-, & 12-bit Self-calibrating A/D Converters
Features
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Description
The CS5012A/14/16 are 12-, 14-, and 16-bit monolithic analog to digital converters with conversion times of 7.
2 µs, 14.
25 µs and 16.
25 µs.
Unique selfcalibration circuitry ensures excellent linearity and differential nonlinearity, with no missing codes.
Offset and full-scale errors are kept within 1/2 LSB (CS5012A/14) and 1 LSB (CS5016), eliminating the need for calibration.
Unipolar and bipolar input ranges are digitally selectable.
The pin compatible CS5012A/14/16 consist of a DAC, conversion and calibration microcontroller, oscillator, comparator, microprocessor-compatible 3-state I/O, and calibration circuitry.
The input track-and-hold, inherent to the devices’ sampling architecture, acquires the input signal after each conversion using a fast-slewing, on-chip buffer amplifier.
This allows throughput rates up to 100 kSps(CS5012A), 56 kSps (CS5014), and 50 kSps (CS5016).
ORDERING INFORMATION
See “Ordering Information” on page39.
Monolithic CMOS A/D Converters
– Microprocessor Compatible – Parallel & Serial Output – Inherent Track/Hold Input
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True 12-bit, 14-bit, and 16-bit Precision Conversion Times
– CS5016: 16.
25 µs – CS5014: 14.
25 µs – CS5012A: 7.
20 µs
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Linearity Error: ±0.
001% FS
– Guaranteed No Missing Codes
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Self-calibration Maintains Accuracy
– Accurate Over Time & Temperature
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Low Power Consumption
– 150 mW
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Low Distortion
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HOLD CS 1 23 32 31 + + + 24
RD 25
A0 BP/UP RST BW INTRLV CAL 26 27 36 37 38 39
EOT EOC SCLK SDATA 41 42 43 44 2 3 4 5 6 7 8 10 14 16 17 18 19 20 21 22 D0 (LSB) CS5016 D1 D2 (LSB) CS5014 D3 D4 (LSB) CS5012A D5 D6 D7 D8 D9 D10 D11 D12 D13 D14 D15 (MSB)
CLKIN REFBUF VREF
Clock Generator
Control Calibration Memory
Microcontroller
AIN
29
Charge Redistribution DAC
+ Comparator Status Register
AGND
30
28 VA+
34 VA-
12 VD+
40 VD-
11 DGND
35 TST
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