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參數(shù)資料
| 型號(hào)： | WM2623CD |
| 廠商： | Wolfson Microelectronics |
| 英文描述： | Low Power 8-bit Serial Input DAC |
| 中文描述： | 低功耗8位串行輸入DAC |
| 文件頁(yè)數(shù)： | 1/10頁(yè) |
| 文件大小： | 86K |
| 代理商： | WM2623CD |
WM2623
Low Power 8-bit Serial Input DAC
Production Data, October 2000, 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
Datasheets
contain final
specifications current on publication date.
Supply of products conforms to Wolfson
Microelectronics’ Terms and Conditions.
2000 Wolfson Microelectronics Ltd
.
FEATURES
8-bit voltage output DAC
Single supply from 2.7V to 5.5V
Very low power consumption (3V supply):
-
900
μ
W, slow mode
-
2.1mW, fast mode
-
3
μ
W, standby mode
DNL
±
0.2 LSB, INL
±
0.5 LSB (max)
Monotonic over Temperature
DSP compatible serial interface
Programmable settling time of 3
μ
s or 9
μ
s typical
High impedance reference input buffer
APPLICATIONS
Digital Servo Control Loops
Industrial Process Control
Battery powered instruments and controls
Machine and motion control devices
Digital offset and gain adjustment
ORDERING INFORMATION
DEVICE
TEMP. RANGE
PACKAGE
WM2623CD
0° to 70°C
8-pin SOIC
WM2623ID
-40° to 85°C
8-pin SOIC
DESCRIPTION
The WM2623 is an 8-bit voltage output, resistor string digital-to-
analogue converter. It can operate with supply voltages
between 2.7V and 5.5V and can be powered down under
software control. Power down reduces current consumption to
less than 1
μ
A.
The device has been designed for glueless interface to industry
standard microprocessors and DSPs, including the TMS320
family. The WM2623 is programmed with a 16-bit serial word
including 4 control bits and 8 data bits.
Excellent performance is delivered with a typical DNL of
0.2LSBs. Monotonicity is guaranteed over the operating
temperature range. The settling time of the DAC is
programmable to allow for optimisation of speed versus power
dissipation. The output stage is buffered by a rail-to-rail amplifier
with a gain of two, which features a Class AB output stage.
The reference voltage input features a high impedance buffer
which eliminates the need to keep the reference source
impedance low.
The WM2623 is available in an 8-pin SOIC package.
Commercial (0
°
to 70
°
C) and Industrial (-40
°
to 85
°
C)
temperature range variants are available.
BLOCK DIAGRAM
TYPICAL PERFORMANCE
(7) OUT
8-BIT
DAC
LATCH
REF(6)
POWER-ON
RESET
DIN (1)
SCLK (2)
FS (4)
(5)
GND
VDD
(8)
POWERDOWN/
SPEED
CONTROL
2-BIT
CONTROL
LATCH
REFERENCE
INPUT BUFFER
WM2623
16-BIT
SHIFT
REGISTER
AND
CONTROL
LOGIC
data
X1
X2
DAC
OUTPUT
BUFFER
CSB (3)
AVDD = DVDD = 5V, V
REF
= 2.048V, Speed = Fast Mode, Load = 10kOhm/100pF
-0.1
-0.08
-0.06
-0.04
-0.02
0
0.02
0.04
0.06
0.08
0.1
0
32
64
96
128
160
192
224
256
DIGITAL CODE
D
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| WM2623ID | Low Power 8-bit Serial Input DAC |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| WM2623ID | 制造商:WOLFSON 制造商全稱:WOLFSON 功能描述:Low Power 8-bit Serial Input DAC |
| WM2623XAB WAF | 制造商:Texas Instruments 功能描述: |
| WM2625 | 制造商:WOLFSON 制造商全稱:WOLFSON 功能描述:Low Power Dual 8-bit Serial Input DAC |
| WM2625CD | 制造商:WOLFSON 制造商全稱:WOLFSON 功能描述:Low Power Dual 8-bit Serial Input DAC |
| WM2625ID | 制造商:WOLFSON 制造商全稱:WOLFSON 功能描述:Low Power Dual 8-bit Serial Input DAC |
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