AS1524 Datasheet, PDF (1/2 Pages) ams AG – Micro-Power, 12-Bit, 150ksps, ADC, Single Ended or Differential

AS1524/AS1525
Micro-Power, 12-Bit, 150ksps, ADC, Single Ended
or Differential
Product Brief
1 General Description
2 Key Features
The AS1524/AS1525 are low-power, 12-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.
Table 1. Standard Products
Model
Input Type
Input Voltage
AS1524
1-Channel, Pseudo /
True-Differential
0 to VREF /
-VREF/2 to VREF/2
AS1525
2-Channel, Single-
Ended
0 to VREF
! 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
(AS1524)
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 AS1525/AS1524 are available in a 8-pin TDFN
(3x3mm) package.
Figure 1. Block Diagram
! Input Common Mode Range from GND to VDD
! 3-Wire SPI-/QSPI-/MICROWIRE-Compatible Serial
Interface
! Internal Conversion Clock
! 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.
1
VDD
7
CNVST
8
SCLK
2
AIN1/AIN+
2
AIN2/AIN-
4
REF
AS1524/AS1525
Input
Osc
Shift
Register
Control
Logic
Track/
Hold
12-Bit
SAR
6
DOUT
5
GND
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