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參數資料
| 型號： | WM2637CD |
| 廠商： | Wolfson Microelectronics |
| 英文描述： | Dual 10-Bit Serial Input Voltage Output DAC with Internal Reference |
| 中文描述： | 雙路10位串行輸入電壓輸出DAC，帶有內部參考 |
| 文件頁數： | 1/11頁 |
| 文件大小： | 262K |
| 代理商： | WM2637CD |
WM2637
Dual 10-Bit Serial Input Voltage Output DAC
with Internal Reference
Production Data, Rev 1.0, July 1999
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
contains final specifications
current on publication date. Supply of products
conforms to Wolfson Microelectronics' Terms
and Conditions.
Last printed 15/07/99 15:56
1999 Wolfson Microelectronics Ltd
.
FEATURES
Dual 10-bit voltage output DAC
Single 2.7V to 5.5V supply
DNL
±
0.1 LSBs, INL
±
0.4 LSBs
Internal programmable voltage reference
Low power consumption:
5.5 mW, slow mode - 5V supply
3.3 mW, slow mode - 3V supply
TMS320, (Q) SPI
, and Microwire
TM
compatible serial
interface
Programmable settling time of 1
μ
s or 3.5
μ
s typical
Power down mode 10nA
APPLICATIONS
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
ORDERING INFORMATION
DEVICE
TEMP. RANGE
PACKAGE
WM2637CD
0° to 70°C
8-pin SOIC
WM2637ID
-40° to 85°C
8-pin SOIC
DESCRIPTION
The WM2637 is a dual 10-bit voltage output, resistor string, digital-
to-analogue converter. A software controlled power down mode is
provided that reduces current consumption to 10nA.
The WM2637 features an internal programmable voltage reference
simplifying overall system design. A reference voltage may also be
supplied externally.
The device has been designed to interface efficiently to industry
standard microprocessors and DSPs, including the TMS320
family. The WM2637 is programmed with a 16-bit serial word
comprising of a latch address, mode DAC control bits and DAC or
control data.
Excellent performance is delivered with a typical DNL of 0.1 LSBs.
The programmable settling time allows the designer to optimize
speed versus power consumption. The output stage is buffered by
a x2 gain near rail-to-rail amplifier.
The device is available in an 8-pin SOIC package ideal for space-
critical applications. Commercial temperature (0
°
to 70
°
C) and
industrial temperature (-40
°
to 85
°
C) variants are supported.
BLOCK DIAGRAM
TYPICAL PERFORMANCE
(7) OUTB
(4) OUTA
10-BIT
HDAC B
LATCH
10-BIT
LATCH
REF(6)
POWER-ON
RESET
DIN (1)
SCLK (2)
NCS (3)
A(5)
POWERDOWN/
SPEED
CONTROL
10-BIT
DAC B
LATCH
DAC
OUTPUT
BUFFER
C2-BIT
LATCH
X1
X2
X2
ODAC
BUFFER
REFERENCE
INPUT
BUFFER
X1
REFERENCE
INPUT BUFFER
16-BIT
RSHIFT
COAND
LOGIC
RE2-BIT
SELECT
LATCH
1.024V/2.048V
SELECTABLE
REFERENCE
X1
VDD
(8)
c
REFERENCE
OUTPUT BUFFER
WITH OUPUT
ENABLE
WM2637
-0.2
-0.15
-0.1
-0.05
0
0.05
0.1
0.15
0.2
0
256
512
767
1023
DIGITAL CODE
D
5V = VDD, V
REF
= External, Speed = Slow mode, Load = 10k/100pF
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| WM2637ID | Dual 10-Bit Serial Input Voltage Output DAC with Internal Reference |
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相關代理商/技術參數 |
參數描述 |
|---|---|
| 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 |
| WM2638CD | 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 |
| WM2638ID | 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 |
| WM2639 | 制造商:WOLFSON 制造商全稱:WOLFSON 功能描述:12-Bit Parallel Input Voltage Output DAC with Internal Reference |
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