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參數資料
| 型號： | WM0832LCP |
| 廠商： | Wolfson Microelectronics |
| 英文描述： | 8-Bit ADCs with Serial Interface and Differential or Dual Inputs |
| 中文描述： | 8 -串行接口和差分或雙位ADC輸入 |
| 文件頁數： | 1/14頁 |
| 文件大小： | 535K |
| 代理商： | WM0832LCP |
Lutton Court, Bernard Terrace, Edinburgh EH8 9NX, UK
Tel: +44 (0) 131 667 9386 Fax: +44 (0) 131 667 5176
email: admin@wolfson.co.uk
www: http://www.wolfson.co.uk
Wolfson Microelectronics
Production Data
data sheets contain final
specifications current on publication date. Supply
of products conforms to Wolfson Microelectronics
standard terms and conditions.
1996 Wolfson Microelectronics
Production Data
Sept 1996 Rev 2.1
8-Bit ADCs with Serial Interface and
Differential or Dual Inputs
Description
WM0831 and WM0832 are 8-bit analogue to digital
converters (ADC) with serial I/O interfaces, providing a
choice of input configurations in 8-pin SO or DIP packages.
WM0831 has a differential input, also configurable as a
single ended input. A-D conversion results are serially
output on Data Out (DO) under the control of clock and chip
select inputs. The device has a separate voltage reference
input.
WM0832's two input multiplexer is configurable via the Data
In (DI) serial input, as two single ended inputs or a single
differential input. The voltage reference operates
ratiometrically and is internally connected to the VCC pin.
Conversion is initiated by bringing and holding chip select
low while providing a clock input. With WM0831's fixed
input configuration, the conversion result is output at DO on
the clock's falling edges in MSB to LSB order.
With WM0832's configurable input multiplexer, data is input
to DI on the rising edges of the clock to setup the Mux and
initiate conversion. Conversion results appear serially at
DO on the falling edges of the clock, first in MSB to LSB
order, and then repeated in LSB to MSB order.
WM0831/2 operate on 5V or 3.3V supply voltages and are
available in small outline and DIP packages for commercial
(0 to 70
o
C) and industrial (-40 to 85
o
C) temperature ranges.
Features
Functionally Equivalent to National Semiconduc-
tor ADC0831 and ADC0832
WM0831: Differential or single ended input
WM0832: Two single ended inputs or a single
differential input
Ratiometric reference input (fixed for WM0832)
Serial I/O interface
Input range 0 to Vcc with Vcc Reference
8 pin package, SO or DIP
5V and 3.3V variants
Total Unadjusted Error: ± 1 LSB
8-bit resolution
32
μ
s conversion time at fclock = 250 kHz
Applications
Embedding with remote sensors
Equipment health monitoring
Automotive
Industrial control
Block Diagrams
WM0831
WM0832
GND
C H0
C H1
DI
C LK
C S
DO
Vcc
V
REF
Start C onv
Mux Select
Input Latch
Internal C S
C
L
Output Shift
Register
C omparator
WM0832
DAC
&
SAR
Logic
Input
MUX
C
L
Output
Latch
C omparator
WM0831
DAC
&
SAR
Logic
D
I
GND
IN+
IN-
V
REF
C LK
C S
DO
Vcc
WM0831, WM0832
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相關代理商/技術參數 |
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|---|---|
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