CS5012A CS5014 CS5016
16-, 14-, & 12-bit Self-calibrating A/D Converters
Features
Monolithic CMOS A/D Converters
– Microprocessor Compatible
– Parallel & Serial Output
– Inherent Track/Hold Input
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.
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).
ORDERING INFORMATION
See
True 12-bit, 14-bit, and 16-bit Precision
Conversion Times
– CS5016: 16.25
µs
– CS5014: 14.25
µs
– CS5012A: 7.20
µs
Linearity Error:
±
0.001% FS
– Guaranteed No Missing Codes
Self-calibration Maintains Accuracy
– Accurate Over Time & Temperature
Low Power Consumption
– 150 mW
Low Distortion
I
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
Copyright
©
Cirrus Logic, Inc. 2005
(All Rights Reserved)
AUG ‘05
DS14F9
CIRRUS [ CIRRUS LOGIC ]
