CS5101A Datasheet, PDF (1/40 Pages) Cirrus Logic – 16-Bit, 100kHz/ 20kHz A/D Converters

CS5101A
CS5102A
16-Bit, 100 kHz / 20 kHz A/D Converters
Features
l Monolithic CMOS A/D Converters
- Inherent Sampling Architecture
- 2-Channel Input Multiplexer
- Flexible Serial Output Port
l Ultra-Low Distortion
- S/(N+D): 92 dB
- THD: 0.001%
l Conversion Time
- CS5101A: 8 µs
- CS5102A: 40 µs
l Linearity Error: ±0.001% FS
- Guaranteed No Missing Codes
l Self-Calibration Maintains Accuracy
- Over Time and Temperature
l Low Power Consumption
- CS5101A: 320 mW
- CS5102A: 44 mW
- Power-down Mode: <1 mW
l Evaluation Board Available
Description
The CS5101A and CS5102A are 16-bit monolithic
CMOS analog-to-digital converters capable of 100 kHz
(5101A) and 20 kHz (5102A) throughput. The
CS5102A’s low power consumption of 44 mW, coupled
with a power down mode, makes it particularly suitable
for battery powered operation.
On-chip self-calibration circuitry achieves nonlinearity of
±0.001% of FS and guarantees 16-bit no missing codes
over the entire specified temperature range. Superior lin-
earity also leads to 92 dB S/(N+D) with harmonics below
-100 dB. Offset and full-scale errors are minimized dur-
ing the calibration cycle, eliminating the need for external
trimming.
The CS5101A and CS5102A each consist of a 2-chan-
nel input multiplexer, DAC, conversion and calibration
microcontroller, clock generator, comparator, and serial
communications port. The inherent sampling architec-
ture of the device eliminates the need for an external
track and hold amplifier.
The converters' 16-bit data is output in serial form with ei-
ther binary or 2's complement coding. Three output
timing modes are available for easy interfacing to micro-
controllers and shift registers. Unipolar and bipolar input
ranges are digitally selectable.
ORDERING INFORMATION
See page 36.
I
HOLD SLEEPRST STBY CODE BP/UP CRS/FIN TRK1 TRK2 SSH/SDLSDATA
12 28 2 5 16 17
10 8 9
11
15
CLKIN ³
XOUT ⁴
REFBUF ²¹
VREF ²⁰
AIN1 ¹⁹
AIN2 ²⁴
CH1/2 ¹³
AGND ²²
Clock
Generator
-
+
Control
Calibration
SRAM
Microcontroller
-
+
-
+
25
VA+
16-Bit Charge
Redistribution
DAC
23
VA-
6
1
DGND
VD-
-
+
Comparator
7
VD+
14
SCLK
26
TEST
27
SCKMOD
18
OUTMOD
Cirrus Logic, Inc.
Crystal Semiconductor Products Division
P.O. Box 17847, Austin, Texas 78760
[phone] FAX: [phone]
http://www.crystal.com
Copyright © Cirrus Logic, Inc. 1997
(All Rights Reserved)
MAR ‘95
DS45F2
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