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參數(shù)資料
| 型號： | WM2629 |
| 廠商： | Wolfson Microelectronics |
| 英文描述： | Octal 8-bit, Serial Input, Voltage Output DAC with Power Down |
| 中文描述： | 八進(jìn)制8位，串行輸入，電壓與掉電輸出DAC |
| 文件頁數(shù)： | 1/13頁 |
| 文件大?。?/td> | 119K |
| 代理商： | WM2629 |
WM2629
Octal 8-bit, Serial Input, Voltage Output DAC
with Power Down
Production Data, April 2001, Rev 1.0
WOLFSON MICROELECTRONICS LTD
Bernard Terrace, Edinburgh, EH8 9NX, UK
Tel: +44 (0) 131 667 9386
Fax: +44 (0) 131 667 5176
Email: sales@wolfson.co.uk
www.wolfsonmicro.com
Production Data
datasheets contain final
specifications current on publication date.
Supply of products conforms to Wolfson
Microelectronics’ Terms and Conditions.
2001 Wolfson Microelectronics Ltd
.
FEATURES
Eight 8-bit DACs in one package
Dual supply 2.7V to 5.5V operation
DNL
±
0.1 LSBs, INL
±
0.3 LSBs typical
Programmable settling time / power
(1.0
μ
s typical in fast mode)
Microcontroller compatible serial interface
Power down mode ( < 0.1
μ
A)
Monotonic over temperature
Data output for daisy chaining
APPLICATIONS
Battery powered test instruments
Digital offset and gain adjustment
Battery operated / remote industrial controls
Programmable loop controllers
CNC machine tools
Machine and motion control devices
Wireless telephone and communication systems
Robotics
ORDERING INFORMATION
DEVICE
TEMP. RANGE
PACKAGE
WM2629CDT
0
°
to 70
°
C
-40
°
to 85
°
C
20-pin TSSOP
WM2629IDT
20-pin TSSOP
DESCRIPTION
The WM2629 is an octal, 8-bit, resistor string digital-to-analogue
converter. The eight individual DACs contained in the IC can be
switched in pairs between fast and slow (low power) operation
modes, or powered down, under software control. Alternatively,
the whole device can be powered down, reducing current
consumption to less than 0.1
μ
A.
The DAC outputs are buffered by a rail-to-rail amplifier with a
gain of two, which is configurable as Class A (fast mode) or
Class AB (for low-power mode).
The WM2629 has been designed to interface directly to industry
standard microprocessors and DSPs, and can operate on two
separate analogue and digital power supplies. It is programmed
with a 16-bit serial word comprising 4 address bits and up to 12
DAC or control register data bits. All eight DACs can be
simultaneously forced to a preset value using a preset input pin.
A daisy-chain data output makes it possible to control several of
Wolfson’s octal DACs from the same interface, without
increasing the number of control lines.
The device is available in a 20-pin TSSOP package.
Commercial
temperature
(0°
temperature (-40° to 85°C) variants are supported.
to
70°C)
and
Industrial
BLOCK DIAGRAM
TYPICAL PERFORMANCE
LATCH
POWER/SPEED
CONTROL
RESISTOR
STRING
(12) OUT A
DAC A
DIN (2)
SCLK (3)
FS (4)
PREB (5)
DOUT (19)
DACs B, C, D, E, F, G, H
as DAC A
(6-9, 13-15)
OUT B to H
VREF/2
SERIAL
INTERFACE
AND
CONTROL
LOGIC
MODE (17)
AVDD
(11)
DVDD
(20)
AGND
(10)
DGND
(1)
LOADB
(18)
REF
(16)
-0.04
-0.03
-0.02
-0.01
0
0.01
0.02
0.03
0.04
0
32
64
96
128
160
192
224
256
DIGITAL CODE
D
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| WM2630 | 制造商:WOLFSON 制造商全稱:WOLFSON 功能描述:Octal 12-bit, Serial Input, Voltage Output DAC with Internal Reference |
| WM2630CDT | 制造商:WOLFSON 制造商全稱:WOLFSON 功能描述:Octal 12-bit, Serial Input, Voltage Output DAC with Internal Reference |
| WM2630IDT | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| WM2631 | 制造商:WOLFSON 制造商全稱:WOLFSON 功能描述:Octal 10-bit, Serial Input, Voltage Output DAC with Internal Reference |
| WM2631CDT | 制造商:WOLFSON 制造商全稱:WOLFSON 功能描述:Octal 10-bit, Serial Input, Voltage Output DAC with Internal Reference |
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