CS5101A
CS5102A
16-Bit, 100 kHz / 20 kHz A/D Converters
Features
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.
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
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.
- 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
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.
- CS5102A: 44 mW
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.
- Power-down Mode: <1 mW
l Evaluation Board Available
ORDERING INFORMATION
See page 36.
I
TRK1
8
SSH/SDL
11
HOLD SLEEPRST STBYCODEBP/UP CRS/FIN
TRK2
9
SDATA
15
12
28
2
5
16
17
10
3
4
14
CLKIN
XOUT
Clock
Generator
SCLK
Control
21
20
19
REFBUF
Calibration
SRAM
Microcontroller
-
+
VREF
AIN1
26
27
TEST
16-Bit Charge
Redistribution
DAC
-
+
SCKMOD
-
+
24
13
AIN2
18
Comparator
OUTMOD
-
CH1/2
+
22
AGND
25
23
VA-
6
1
7
VA+
DGND
VD-
VD+
Cirrus Logic, Inc.
Copyright Cirrus Logic, Inc. 1997
(All Rights Reserved)
Crystal Semiconductor Products Division
P.O. Box 17847, Austin, Texas 78760
(512) 445 7222 FAX: (512) 445 7581
http://www.crystal.com
MAR ‘95
DS45F2
1
CIRRUS [ CIRRUS LOGIC ]
