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參數(shù)資料
| 型號： | WM2614 |
| 廠商： | Wolfson Microelectronics |
| 英文描述： | Quad 12-bit Serial Input Voltage Output DAC |
| 中文描述： | 四路12位串行輸入電壓輸出DAC |
| 文件頁數(shù)： | 1/10頁 |
| 文件大小： | 155K |
| 代理商： | WM2614 |
WM2614
Quad 12-bit Serial Input Voltage Output DAC
Production Data, June 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
Datasheets contain final
specifications current on publication date.
Supply of products conforms to Wolfson
Microelectronics’ terms and conditions.
2614Mastera.doc June 18, 1999 14:36
1999 Wolfson Microelectronics Ltd
.
FEATURES
Quad 12-bit DAC voltage output DAC
Dual 2.7V to 5.5V supply (separate digital and analogue
supplies)
DNL
±
0.4 LSB, INL
±
1.5 LSB
Low power consumption:
-
5.5mW, slow mode
5V supply
-
3.3mW, slow mode
3V supply
TMS320, (Q)SPI
, and Microwire
compatible serial
interface
Programmable settling time of 4
μ
s or 12
μ
s typical
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
WM2614CDT
0° to 70°C
16-pin TSSOP
WM2614IDT
-40° to 85 °C
16-pin TSSOP
DESCRIPTION
The WM2614 is a quadruple 12-bit voltage output, resistor string,
digital-to-analogue converter. Each DAC can be individually
powered down under software control. A hardware controlled mode
is provided that powers down all DACs. Power down reduces
current consumption to 10nA.
The device has been designed to interface efficiently to industry
standard microprocessors and DSPs, including the TMS320
family. The WM2614 is programmed with a 16-bit serial word
comprising of a DAC address, individual DAC control bits and a
12-bit value.
The WM2614 has provision for two supplies: one supply for the
serial interface (DVDD, DGND) and one for the DACs, reference
buffers and output buffers (AVDD, AGND). This enables a typical
application where the device can be controlled via a
microprocessor operating on a 3V supply, with the DACs operating
on a 5V supply. Alternatively, the supplies can be tied together in a
single supply application.
Excellent performance is delivered with a typical DNL of 0.4 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, which features a
Class AB output stage. DACs A and B can have a different
reference voltage to DACs C and D.
The device is available in a 16-pin TSSOP package.
Commercial temperature (0
°
to 70
°
C) and Industrial
temperature (-40
°
to 85
°
C) variants are supported.
BLOCK DIAGRAM
TYPICAL PERFORMANCE
(11) OUTD
(12) OUTC
(13) OUTB
(14) OUTA
14-BIT
DATA AND
CONTROL
HOLDING
LATCH
1DAC
LATCH
16-BIT
SHIFT
REGISTER
AND
CONTROL
LOGIC
REFINAB (15)
REFINCD (10)
POWER-ON
RESET
DIN (4)
FS (7)
SCLK (5)
NCS (6)
(9)
AGND
(8)
DGND
(3)
NLDAC
(2)
NPD
AVDD
(16)
DVDD
(1)
X2
DAC A
DAC C
DAC D
POWERDOWN/
SPEED
CONTROL
WM2614
2-BIT
CONTROL
LATCH
DAC B
X1
DAC
BUFFER
data
REFERENCE
INPUT BUFFER
AVDD = DVDD = 5V, V
REF
= 2.048V, Speed = Fast mode, Load = 10k/100pF
-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
相關PDF資料 |
PDF描述 |
|---|---|
| WM2614CDT | TVS BIDIRECT 600W 75V SMB |
| WM2614IDT | Quad 12-bit Serial Input Voltage Output DAC |
| WM2616 | TVS UNIDIRECT 78V 600W SMB |
| WM2616CD | TVS BI-DIR 78V 600W SMB |
| WM2616ID | TVS ZENER BIDIRECT 600W 8.0V SMB |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| WM2614CDT | 制造商:WOLFSON 制造商全稱:WOLFSON 功能描述:Quad 12-bit Serial Input Voltage Output DAC |
| WM2614IDT | 制造商:WOLFSON 制造商全稱:WOLFSON 功能描述:Quad 12-bit Serial Input Voltage Output DAC |
| WM2616 | 制造商:WOLFSON 制造商全稱:WOLFSON 功能描述:12-bit Serial Input Voltage Output DAC |
| WM2616CD | 制造商:WOLFSON 制造商全稱:WOLFSON 功能描述:12-bit Serial Input Voltage Output DAC |
| WM2616ID | 制造商:WOLFSON 制造商全稱:WOLFSON 功能描述:12-bit Serial Input Voltage Output DAC |
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