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| 型號(hào)： | AD5557CRU |
| 廠商： | ANALOG DEVICES INC |
| 元件分類： | DAC |
| 英文描述： | Dual Current Output, Parallel Input, 16-/14-Bit Multiplying DACs with 4-Quadrant Resistors |
| 中文描述： | PARALLEL, WORD INPUT LOADING, 0.5 us SETTLING TIME, 14-BIT DAC, PDSO38 |
| 封裝： | MO-153BD-1, TSSOP-38 |
| 文件頁數(shù)： | 1/20頁 |
| 文件大小： | 481K |
| 代理商： | AD5557CRU |
Dual Current Output, Parallel Input, 16-/14-Bit
Multiplying DACs with 4-Quadrant Resistors
AD5547/AD5557
FEATURES
Dual channel
16-bit resolution: AD5547
14-bit resolution: AD5557
2- or 4-quadrant, 4 MHz BW multiplying DAC
±1 LSB DNL
±1 LSB INL for AD5557, ±2 LSB INL for AD5547
Operating supply voltage: 2.7 V to 5.5 V
Low noise: 12 nV/√Hz
Low power: I
DD
= 10 μA max
0.5 μs settling time
Built-in R
FB
facilitates current-to-voltage conversion
Built-in 4-quadrant resistors allow 0 V to –10 V, 0 V to +10 V,
or ±10 V outputs
2 mA full-scale current ± 20%, with V
REF
= 10 V
Extended automotive operating temperature range:
–40°C to +125°C
Selectable zero-scale/midscale power-on presets
Compact TSSOP-38 package
APPLICATIONS
Automatic test equipment
Instrumentation
Digitally controlled calibration
Digital waveform generation
GENERAL DESCRIPTION
The AD5547/AD5557 are dual precision, 16-/14-bit,
multiplying, low power, current-output, parallel input, digital-
to-analog converters. They are designed to operate from single
+5 V supply with ±10 V multiplying references for 4-quadrant
outputs with up to 4 MHz bandwidth.
Rev.
0
Information furnished by Analog Devices is believed to be accurate and reliable.
However, no responsibility is assumed by Analog Devices for its use, nor for any
infringements of patents or other rights of third parties that may result from its use.
Specifications subject to change without notice. No license is granted by implication
or otherwise under any patent or patent rights of Analog Devices. Trademarks and
registered trademarks are the property of their respective owners.
Tel: 781.329.4700Fax: 781.326.8703
www.analog.comFUNCTIONAL BLOCK DIAGRAM
R
COMA
R
1A
DAC A
D0..D15
OR
D0..D13
DAC A
DAC B
ADDR
DECODE
INPUT
REGISTER
RS
DAC A
REGISTER
RS
DAC B
REGISTER
RS
POWER
ON
RESET
V
DD
R
COMB
R
OFSA
V
REFA
R
1B
R
OFSB
0
R
FBA
AGNDA
AGNDB
V
REFB
I
OUTA
R
FBB
I
OUTB
D0–D15
(AD5547)
D0–D13
(AD5557)
A0, A1
MSB
LDAC
DGND
WR
RS
INPUT
REGISTER
RS
DAC B
AD5547/AD5557
Figure 1.
The built-in 4-quadrant resistors facilitate resistance matching
and temperature tracking, which minimize the numbers of
components needed for multiquadrant applications. In addition,
the feedback resistor (R
FB
) simplifies the I-V conversion with an
external buffer.
The AD5547/AD5557 are available in a compact TSSOP-38
package and operate at the extended automotive temperature
range of –40°C to +125°C.
VREF
–VREF
–VREF TO +VREF
0
U1
C1
R
1A
16/14 DATA
R
COMA
R1
R2
R
OFSA
R
FBA
C2
RFB
ROFS
16-/14-BIT
DAC A
MSB A0, A1
2
POWER-ON
RESET
AD5547/AD5557
IOUTA
AGNDA
(ONE CHANNEL SHOWN ONLY)
U2
VOUTA
V
REFA
MSB
A0, A1
LDAC
WR
RS
WR
RS
LDAC
Figure 2. 16/14-Bit 4-Quadrant Multiplying DAC with Minimum of External Components (Only One Channel Shown)
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