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PDF AS1521 Data sheet ( Hoja de datos )
| Número de pieza | AS1521 | |
| Descripción | 8-Channel A/D Converters | |
| Fabricantes | austriamicrosystems AG | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de AS1521 (archivo pdf) en la parte inferior de esta página. Total 2 Páginas | ||
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AS1520, AS1521
10-Bit, Single-Supply, Low-Power, 400/300ksps,
8-Channel A/D Converters
Product Brief
1 General Description
2 Key Features
The AS1520/AS1521 are low-power, 8/4-channel, 400/
300ksps, 10-bit analog-to-digital (A/D) converters specif-
ically designed to operate with single-supply devices.
Superior AC characteristics, very low power consump-
tion, and highly-reliable packaging make these ultra-
small devices perfect for battery-powered remote-sen-
sor and data-acquisition devices.
The successive-approximation register (SAR), high-
speed sampling, high-bandwidth track/hold circuitry, and
multi-mode operation combine to make these devices
highly-flexible and configurable.
Both devices require low supply current (2.8mA @
400ksps, AS1520; 2.2mA @ 300ksps, AS1521) and fea-
ture a reduced-power mode and a power-down mode to
lower power consumption at slower throughput rates.
The devices operate from a single supply (+4.5 to +5.5V,
AS1520; +2.7 to +3.6V, AS1521). Both devices contain
an internal 2.5V reference, an integrated reference
buffer, and feature support for an external reference (1V
to VDD).
Data accesses are made via the high-speed, 4-wire,
SPI, QSPI-, and Microwire-compatible serial interface.
The devices are available in a 20-pin TSSOP package.
! Single-Supply Operation:
- +4.5 to +5.5V (AS1520)
- +2.7 to +3.6V (AS1521)
! Sampling Rate:
- 400ksps (AS1520)
- 300ksps (AS1521)
! Software-Configurable Analog Input Types:
- 8-Channel Single-Ended
- 8-Channel Pseudo Differential Referenced to COM
- 4-Channel Pseudo Differential
- 4-Channel Fully Differential
! Software-Configurable Input Range
! Internal +2.5V Reference
! Low-Current Operation:
- 2.8mA @ 400ksps (AS1520)
- 2.2mA @ 300ksps (AS1521)
- 0.4mA in Reduced-Power Mode
- 0.5µA in Full Power-Down Mode
! SPI/QSPI/Microwire/TMS320-Compatible
! 20-pin TSSOP Package
3 Applications
Figure 1. Block Diagram and Pin Assignments
The devices are ideal for remote sensors, data-acquisi-
tion and data-logging devices, pen-digitizers, process
control, or any other space-limited A/D application with
low power-consumption requirements.
17
CSN
18
SCLK
16
DIN
1:8
CH0:CH7
9
COM
12
REFADJ
11
REF
Output
Shift
Register
Input Shift
Register
Control
Logic
Analog
Input
AS1520/
AS1521
Track/
Hold
10-Bit
SAR
IN OUT
REF
+1.2V
REF
17kΩ
Av ≈ 2.05
+2.50V
14
DOUT
15
SSTRB
10
VDD3
19
VDD2
20
VDD1
13
GND
CH0 1
CH1 2
CH2 3
CH3 4
CH4 5
CH5 6
CH6 7
CH7 8
COM 9
VDD3 10
AS1520/
AS1521
20 VDD1
19 VDD2
18 SCLK
17 CSN
16 DIN
15 SSTRB
14 DOUT
13 GND
12 REFADJ
11 REF
www.austriamicrosystems.com
Revision 1.00
1-2
1 page | ||
| Páginas | Total 2 Páginas | |
| PDF Descargar | [ Datasheet AS1521.PDF ] | |
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| Número de pieza | Descripción | Fabricantes |
| AS1520 | 8-Channel A/D Converters | austriamicrosystems AG |
| AS1521 | 8-Channel A/D Converters | austriamicrosystems AG |
| AS1522 | 4-Channel A/D Converters | austriamicrosystems AG |
| AS1523 | 4-Channel A/D Converters | austriamicrosystems AG |
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