CS5016 CS5014 CS5012A
16, 14 & 12-Bit, Self-Calibrating A/D Converters
Semiconductor Corporation
Features
General Description
The CS5012A/14/16 are 12, 14 and 16-bit monolithic
analog to digital converters with conversion times of
7.2µs, 14.25µs and 16.25µs. Unique self-calibration cir-
cuitry insures excellent linearity and differential non-
linearity, 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 select-
able.
Monolithic CMOS A/D Converters
Microprocessor Compatible
Parallel and Serial Output
Inherent Track/Hold Input
•
True 12, 14 and 16-Bit Precision
•
•
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, in-
herent 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 kHz (CS5012A), 56 kHz (CS5014) and
50 kHz (CS5016).
Conversion Times:
CS5016 16.25 µs
CS5014 14.25 µs
CS5012A 7.20 µs
Self Calibration Maintains Accuracy
Over Time and Temperature
•
An evaluation board (CDB5012/14/16) is available
which allows fast evaluation of ADC performance.
Low Power Dissipation: 150 mW
Low Distortion
•
•
ORDERING INFORMATION: Pages 2-45, 2-46, & 2-47
HOLD CS RD
A0 BP/UP RST BW INTRLV CAL
23 24 32 33 34 35
EOT EOC SCLK SDATA
1
21
22
37
38
39
40
2
3
D0 (LSB) CS5016
D1
4
20
CLOCK
GENERATOR
D2 (LSB) CS5014
CONTROL
CLKIN
5
D3
6
D4 (LSB) CS5012A
29
CALIBRATION
MEMORY
7
REFBUF
VREF
MICROCONTROLLER
D5
8
-
D6
28
26
27
9
+
D7
12
13
14
15
16
17
18
19
D8
D9
-
+
CHARGE
REDISTRIBUTION
DAC
-
+
D10
D11
D12
D13
D14
D15 (MSB)
AIN
COMPARATOR
-
+
AGND
STATUS REGISTER
25
30
VA-
11
VD+
36
VD-
10
31
TST
VA+
DGND
Crystal Semiconductor Corporation
P.O. Box 17847, Austin, TX 78760
(512) 445 7222 FAX: (512) 445 7581
MAR ’95
DS14F6
Copyright Crystal Semiconductor Corporation 1995
(All Rights Reserved)
2-7