AS1528/AS1529
M i c r o - P o w e r, 1 0 - B i t , 1 5 0 k s ps , A D C , S i n g l e E n d e d
or Differential
D a ta S he e t
1 General Description
The AS1528/AS1529 are low-power, 10-bit analog-to-
digital converters (ADCs) designed to operate with a sin-
gle +2.7 to +5.25V supply. Excellent dynamic perfor-
mance, low power consumption, and simplicity make
these devices perfect for portable battery-powered data-
acquisition applications.
The devices are available as the standard products
listed in
Table 1. Standard Products
Model
AS1528
AS1529
Input Type
1-Channel, Pseudo /
True-Differential
2-Channel, Single-
Ended
Input Voltage
0 to V
REF
/
-V
REF
/2 to V
REF
/2
0 to V
REF
2 Key Features
!
!
!
Single-Supply Operation: +2.7 to +5.25V
Automatic Shutdown Between Conversions
Low Power Consumption
- 350µA @ 150ksps
- 245µA @ 100ksps
- 24µA @ 10ksps
- 2.5µA @ 1ksps
- 200nA in Automatic Shutdown Mode
!
True-Differential Track/Hold, 150kHz Sampling Rate
Software-Configurable Unipolar/Bipolar Conversion
(AS1528)
Input Common Mode Range from GND to V
DD
3-Wire SPI-/QSPI-/MICROWIRE-Compatible Serial
Interface
Internal Conversion Clock
8-pin TDFN (3x3mm) Package
The devices feature a successive-approximation regis-
ter (SAR), automatic shutdown, fast wakeup (1.4µs),
and low-power consumption at the maximum sampling
rate of 150ksps.
Automatic shutdown (0.2µA) between conversions
results in reduced power consumption (at slower
throughput rates).
Data access are made via an external clock through the
SPI-/QSPI-/MICROWIRE-compatible 3-wire high-speed
serial interface.
The AS1529/AS1528 are available in a 8-pin TDFN
(3x3mm) package.
!
!
!
!
3 Applications
The devices are ideal for remote sensors, data-acquisi-
tion, data logging devices, lab instruments, or for any
other space-limited A/D devices with low power con-
sumption and single-supply requirements.
Figure 1. Block Diagram
1
V
DD
7
CNVST
8
SCLK
Control
Logic
2
AIN1/AIN+
2
AIN2/AIN-
4
REF
5
GND
Track/
Hold
10-Bit
SAR
6
DOUT
Input
Shift
Register
AS1528/AS1529
Osc
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