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WM2613IDT Datasheet

  • WM2613IDT

  • Byte-wide Parallel Input, 12-bit Voltage Output DAC

  • 11頁

  • WOLFSON

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WM2613
Byte-wide Parallel Input, 12-bit Voltage Output DAC
Production Data, June 1999, Rev 1.0
FEATURES
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Dual 12-bit voltage output DAC
Dual supply 2.7V to 5.5V operation
DNL
鹵
0.4 LSB, INL
鹵
1.5 LSB
Programmable settling time 1碌 s or 3碌 s typical
碌
碌
8-bit micro controller compatible interface
Power down mode (10nA)
DESCRIPTION
The WM2613 is a 12-bit voltage output, resistor string, digital-to-
analogue converter. The DAC can be powered down under
software or hardware control, reducing power consumption to
10nA.
The device has an 8-bit microcontroller compatible parallel
interface. The eight data LSBs, the four data MSBs, and the three
control bits are written using three different addresses.
Excellent performance is delivered with a typical DNL of 0.4 LSBs.
The output stage is buffered by a x2 gain near rail-to-rail amplifier,
which features a Class A output stage (slow mode, class AB). The
settling time of the DAC is software programmable to allow the
designer to optimize speed versus power dissipation.
The device is available in a 20-pin TSSOP package. 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
WM2613CDT
WM2613IDT
TEMP. RANGE
0擄 to 70擄C
-40擄 to 85擄C
PACKAGE
20-pin TSSOP
20-pin TSSOP
BLOCK DIAGRAM
DVDD
(10)
REFIN(12)
SPD (9)
NPD (15)
POWERDOWN/
SPEED
CONTROL
REFERENCE
INPUT BUFFER
X1
AVDD
(11)
TYPICAL PERFORMANCE
1
AVDD = DVDD = 5V, V
REF
= 2.048V, Speed = Fast mode, Load = 10k/100pF
0.8
0.6
0.4
DNL - LSB
(13) OUT
A[0-1] (8,7)
PARALLEL
INTERFACE
AND
CONTROL
LOGIC
3-BIT
CONTROL
LATCH
0.2
0
-0.2
-0.4
-0.6
-0.8
-1
0
512
1024
1536
2048
DIGITAL CODE
2559
3071
3583
4095
DAC
OUTPUT
BUFFER
12-BIT DAC
LATCH
X2
NCS (18)
NWE (17)
4-BIT DAC
MSW
HOLDING
LATCH
8-BIT DAC
LSW
HOLDING
LATCH
D[0-7]
(19,20, 1-6)
POWER-ON
RESET
(14)
GND
(16)
NLDAC
WM2613
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.
Master rev 1.0.doc June 17, 1999 14:12
漏1999
Wolfson Microelectronics Ltd
.

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