CS5016 Datasheet, PDF (1/46 Pages) Cirrus Logic – 16, 14 & 12-Bit, Self-Calibrating A/D Converters

Semiconductor Corporation
CS5016 CS5014 CS5012A
16, 14 & 12-Bit, Self-Calibrating A/D Converters
Features
• Monolithic CMOS A/D Converters
Microprocessor Compatible
Parallel and Serial Output
Inherent Track/Hold Input
• ^{True 12, 14 and 16-Bit Precision}
• ^{Conversion Times:}
CS5016 16.25 µs
CS5014 14.25 µs
CS5012A 7.20 µs
• Self Calibration Maintains Accuracy
Over Time and Temperature
• ^{Low Power Dissipation: 150 mW}
• ^{Low Distortion}
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.
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).
An evaluation board (CDB5012/14/16) is available
which allows fast evaluation of ADC performance.
ORDERING INFORMATION: Pages 2-45, 2-46, & 2-47
HOLD CS RD A0 BP/UP RST BW INTRLV CAL
1 21 22 23 24 32 33 34 35
EOT EOC SCLK SDATA
37 38 39 40
CLKIN ²⁰
29
REFBUF
28
VREF
AIN ²⁶
AGND ²⁷
CLOCK
GENERATOR
-
+
CONTROL
CALIBRATION
MEMORY
MICROCONTROLLER
-
+
-
+
25
VA+
30
VA-
CHARGE
REDISTRIBUTION
DAC
-
+
COMPARATOR
STATUS REGISTER
11
VD+
36
VD-
10
DGND
31
TST
2 _{D0 (LSB) CS5016}
3 _D1
4 _{D2 (LSB) CS5014}
5 _D3
6 _{D4 (LSB) CS5012A}
7 _D5
8 _D6
9 _D7
12 _D8
13 _D9
14 _D10
15 _D11
16 _D12
17 _D13
18 _D14
19 _{D15 (MSB)}
Crystal Semiconductor Corporation
P.O. Box 17847, Austin, TX 78760
[phone] FAX: [phone]
Copyright © Crystal Semiconductor Corporation 1995
(All Rights Reserved)
MAR ’95
DS14F6
2-7