CS5012A CS5014 CS5016
16-, 14-, & 12-bit Self-calibrating A/D Converters
Features
Description
The CS5012A/14/16 are 12-, 14-, and 16-bit mono-
lithic analog to digital converters with conversion
times of 7.2 µs, 14.25 µs and 16.25 µs. Unique self-
calibration circuitry ensures excellent linearity and
differential nonlinearity, with no missing codes. Off-
set 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.
z Monolithic CMOS A/D Converters
– Microprocessor Compatible
– Parallel & Serial Output
– Inherent Track/Hold Input
z True 12-bit, 14-bit, and 16-bit Precision
z Conversion Times
– CS5016: 16.25 µs
– CS5014: 14.25 µs
– CS5012A: 7.20 µs
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 am-
plifier. This allows throughput rates up to
100 kSps(CS5012A), 56 kSps (CS5014), and
50 kSps (CS5016).
z Linearity Error: ±0.001% FS
– Guaranteed No Missing Codes
z Self-calibration Maintains Accuracy
– Accurate Over Time & Temperature
z Low Power Consumption
– 150 mW
ORDERING INFORMATION
See “Ordering Information” on page39.
z Low Distortion
I
HOLD CS RD A0 BP/UP RST BW INTRLV CAL EOT EOC SCLK SDATA
1
24 25
26 27 36 37
38
39
41
42
43
44
2
3
D0 (LSB) CS5016
D1
4
5
6
23
32
31
Clock
Generator
D2 (LSB) CS5014
D3
D4 (LSB) CS5012A
CLKIN
Control
REFBUF
7
8
Calibration
Memory
D5
D6
Microcontroller
-
+
10
14
VREF
AIN
D7
D8
16
17
18
Charge
Redistribution
DAC
-
+
D9
D10
D11
29
30
-
+
19
20
Comparator
D12
D13
-
+
AGND
21
22
Status Register
D14
D15 (MSB)
28
34
VA-
12
40
VD-
11
35
TST
VA+
VD+
DGND
Copyright © Cirrus Logic, Inc. 2005
AUG ‘05
DS14F9
http://www.cirrus.com
(All Rights Reserved)