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8mW typical in fast mode
TMS320, (Q)SPI錚? and Microwire錚?compatible serial
interface
Programmable settling time 4碌s or 12碌s typical
DESCRIPTION
The WM2617 is a dual 10-bit voltage output, resistor string,
digital-to-analogue converter. A power-on-reset function
ensures repeatable start-up conditions.
The device has been designed to interface efficiently to industry
standard microprocessors and DSPs, including the TMS320
family. The WM2617 is programmed with a 16-bit serial word.
The WM2617 has a simple-to-use single 2.7V to 5.5V supply.
The digital inputs feature Schmitt triggers for high noise
immunity.
The number of clocks from the falling edge of NCS are counted
automatically. The device is then updated and disabled from
accepting further data inputs.
Excellent performance is delivered with a typical DNL of 鹵0.1
LSBs. The settling time of the DAC is programmable to allow
the designer to optimise speed versus power dissipation.
The device is available in an 8-pin SOIC package ideal for
space-critical applications. Commercial temperature (0擄 to
70擄C) and industrial temperature (-40擄 to 85擄C) variants are
supported.
APPLICATIONS
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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
WM2617CD
WM2617ID
TEMP. RANGE
0擄 to 70擄C
-40擄 to 85擄C
PACKAGE
8-pin SOIC
8-pin SOIC
BLOCK DIAGRAM
VDD
(8)
REFIN(6)
REFERENCE
INPUT BUFFER
X1
DAC
OUTPUT
BUFFER
TYPICAL PERFORMANCE
0.25
VDD = 5V, V
REF
= 2.048V, Speed = Fast mode, Load = 10K/100pF
0.2
0.15
0.1
DNL - LSB
(4) OUTA
DIN (1)
data
16-BIT
SHIFT
REGISTER
AND
CONTROL
LOGIC
10-BIT
DAC A
LATCH
REFERENCE
INPUT BUFFER
X1
X2
0.05
0
-0.05
-0.1
SCLK (2)
NCS (3)
DAC
OUTPUT
BUFFER
X2
(7) OUTB
10-BIT
DAC B
HOLDING
LATCH
10-BIT
DAC B
CONTROL
LATCH
-0.15
-0.2
POWER-ON
RESET
2-BIT
CONTROL
LATCH
POWERDOWN/
SPEED
CONTROL
-0.25
0
256
512
DIGITAL CODE
767
1023
WM2617
(5)
AGND
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鈥?Terms and Conditions.
餂?000
Wolfson Microelectronics Ltd
.
WM2617ID相關(guān)型號PDF文件下載
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