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AS1536

Description
12-Bit, Single Supply, Low-Power, 73ksps A/D Converters
File Size655KB,21 Pages
ManufacturerAMS
Websitehttps://ams.com/zh
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AS1536 Overview

12-Bit, Single Supply, Low-Power, 73ksps A/D Converters

AS1536/AS1537
1 2 - B i t , S i n g l e S u p p l y, L o w - P o w e r, 7 3 k s ps A / D C o n -
verters
D a ta s h e e t
1 General Description
The AS1536/AS1537 are low-power, 12-bit, 73ksps ana-
log-to-digital (A/D) converters specifically designed for
single-supply A/D applications. Superior AC characteris-
tics, very low power consumption, and robust packaging
make these ultra-small devices perfect for battery-pow-
ered analog-data collection devices.
The integrated successive-approximation register (SAR)
and a fast (1.5µs) sampling track/hold time provide an
economic and highly-reliable A/D conversion solution.
The AS1536/AS1537 operate from a single 2.7V to
5.25V supply. The AS1537 requires an external refer-
ence, using less power than the AS1536, however, the
AS1536 features an internal 2.5V reference.
As with the AS1537, the AS1536 can also be used with
an external reference, which uses the input range 0V to
V
REF
, including the positive supply range.
The AS1537 consumes only 3mW (V
DD
= 3V) at the
73ksps maximum sampling speed. Both devices feature
a low-current (0.3µA) shutdown mode, which reduces
power consumption at slower throughput rates.
Data accesses are made via the standard, high-speed
3-wire serial interface, which is SPI-, QSPI-, and
Microwire-compatible. Both devices contain an internal
clock, however, both devices also support an external
clock for increased flexibility.
The AS1536/AS1537 are available in an 8-pin SOIC-150
package.
2 Key Features
!
!
!
!
!
!
12-Bit Resolution with 7.5µs Conversion Time
Sampling Rate: 73ksps
Straight Binary (Unipolar) Data Format
Single-Supply Operation:+2.7V to +5.25V
Internal 2.5V Reference (AS1536)
Low Power-Consumption:
- 4mW (73ksps, AS1536)
- 3mW (73ksps, AS1537)
- 66µW (1ksps, AS1537)
- 1µW (Shutdown Mode)
Integrated Track/Hold Amplifier
Internal Clock
SPI/QSPI/Microwire 3-Wire Serial Interface
Operating Temperature Range: -40 to +85ºC
8-pin SOIC-150 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
VDD
7
CSN
8
SCLK
3
SHDNN
Control
Logic
Internal
Clock
Output
Shift
Register
6
DOUT
AS1536/AS1537
2
AIN
4
REF
Track/
Hold
12-Bit
SAR
2.5V
Ref
5
GND
AS1536
only
www.austriamicrosystems.com
Revision 1.01
2 - 22

AS1536 Related Products

AS1536 AS1536-BSOT AS1537 AS1537-BSOT AS1536-BSOU AS1537-BSOU
Description 12-Bit, Single Supply, Low-Power, 73ksps A/D Converters 12-Bit, Single Supply, Low-Power, 73ksps A/D Converters 12-Bit, Single Supply, Low-Power, 73ksps A/D Converters 12-Bit, Single Supply, Low-Power, 73ksps A/D Converters 12-Bit, Single Supply, Low-Power, 73ksps A/D Converters 12-Bit, Single Supply, Low-Power, 73ksps A/D Converters
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