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參數(shù)資料
| 型號： | WM2636CD |
| 廠商： | Wolfson Microelectronics |
| 英文描述： | 12-bit Serial Input Voltage Output DAC with Internal Reference |
| 中文描述： | 12位串行輸入電壓與內(nèi)部基準輸出DAC |
| 文件頁數(shù)： | 1/10頁 |
| 文件大?。?/td> | 392K |
| 代理商： | WM2636CD |
WM2636
12-bit Serial Input Voltage Output DAC
with Internal Reference
Production Data, July 1999, Rev 1.0
WOLFSON MICROELECTRONICS LTD
Lutton Court, Bernard Terrace, Edinburgh, EH8 9NX, UK
Tel: +44 (0) 131 667 9386
Fax: +44 (0) 131 667 5176
Email: sales@wolfson.co.uk
http://www.wolfson.co.uk
Production Data
contain final specifications
current on publication date. Supply of
products conforms to Wolfson
Microelectronics’ Terms and Conditions.
1999 Wolfson Microelectronics Ltd
.
FEATURES
12-bit voltage output DAC
Single supply from 2.7V to 5.5V
DNL
±
0.5 LSBs, INL
±
2.0 LSBs
Very low power consumption (3V supply):
-
4.2mW, slow mode
-
8.1mW, fast mode
TMS320, (Q)SPI
, and Microwire
compatible serial
interface
Programmable settling time of 3.5
μ
s or 1
μ
s typical
High impedance reference input buffer
Power down mode 10nA
APPLICATIONS
ORDERING INFORMATION
Battery powered test instruments
Digital offset and gain adjustment
Battery operated/remote industrial controls
Machine and motion control devices
Wireless telephone and communication systems
Speech synthesis
Arbitrary waveform generation
DEVICE
TEMP. RANGE
PACKAGE
WM2636CD
0
°
to 70
°
C
8-pin SOIC
WM2636ID
-40
°
to 85
°
C
8-pin SOIC
DESCRIPTION
The WM2636 is a 12-bit voltage output, resistor string digital-to-
analogue converter that can be powered down under software
control. Power down reduces current consumption to 10nA.
An internal precision voltage reference is provided which can
source up to 1mA. This can therefore be used as an external
system reference.
The device has been designed to interface efficiently to industry
standard microprocessors and DSPs, including the TMS320
family. The WM2636 is programmed with a 16-bit serial word
comprising 4 control bits and 12 data bits.
Excellent performance is delivered with a typical DNL of 0.5
LSBs. The settling time of the DAC is programmable to allow
the designer to optimize speed versus power dissipation. The
output stage is buffered by a x2 gain near rail-to-rail amplifier.
The device is available in an 8-pin SOIC package. Commercial
temperature (0
°
to 70
°
C) and Industrial temperature (-40
°
to
85
°
C) variants are supported.
BLOCK DIAGRAM
TYPICAL PERFORMANCE
(7) OUT
12-BIT
DAC
LATCH
POWER-ON
RESET
DIN (1)
SCLK (2)
FS (4)
(5)
AGND
VDD
(8)
POWERDOWN/
SPEED
CONTROL
2-BIT
CONTROL
LATCH
REFERENCE INPUT
BUFFER
16-BIT
SHIFT
REGISTER
AND
CONTROL
LOGIC
data
X1
X2
DAC
OUTPUT
BUFFER
NCS (3)
2-BIT
REFERENCE
SELECT
LATCH
1.024V/2.048V
SELECTABLE
REFERENCE
X1
REFERENCE
OUTPUT BUFFER
WITH OUPUT
ENABLE
REF(6)
WM2636
-1
-0.8
-0.6
-0.4
-0.2
0
0.2
0.4
0.6
0.8
1
0
512
1024
1536
2048
2559
3071
3583
4095
DIGITAL CODE
D
VDD = 5V, V
REF
= External, Speed = Fast mode, Load = 10k/100pF
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| WM2636ID | 12-bit Serial Input Voltage Output DAC with Internal Reference |
| WM2637 | Dual 10-Bit Serial Input Voltage Output DAC with Internal Reference |
| WM2637CD | Dual 10-Bit Serial Input Voltage Output DAC with Internal Reference |
| WM2637ID | Dual 10-Bit Serial Input Voltage Output DAC with Internal Reference |
| WM2638 | Dual 12-Bit Serial Input Voltage Output DAC with Internal reference |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| WM2636ID | 制造商:WOLFSON 制造商全稱:WOLFSON 功能描述:12-bit Serial Input Voltage Output DAC with Internal Reference |
| WM2637 | 制造商:WOLFSON 制造商全稱:WOLFSON 功能描述:Dual 10-Bit Serial Input Voltage Output DAC with Internal Reference |
| WM2637CD | 制造商:WOLFSON 制造商全稱:WOLFSON 功能描述:Dual 10-Bit Serial Input Voltage Output DAC with Internal Reference |
| WM2637ID | 制造商:WOLFSON 制造商全稱:WOLFSON 功能描述:Dual 10-Bit Serial Input Voltage Output DAC with Internal Reference |
| WM2638 | 制造商:WOLFSON 制造商全稱:WOLFSON 功能描述:Dual 12-Bit Serial Input Voltage Output DAC with Internal reference |
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