AD5546_15 Datasheet, PDF (1/20 Pages) Analog Devices – Current Output, Parallel Input, 16-/14-Bit Multiplying DACs with Four-Quadrant Resistors

Data Sheet
Current Output, Parallel Input, 16-/14-Bit
Multiplying DACs with Four-Quadrant Resistors
AD5546/AD5556
FEATURES
16-bit resolution
14-bit resolution
2- or 4-quadrant multiplying DAC
±1 LSB DNL
±1 LSB INL
Operating supply voltage: 2.7 V to 5.5 V
Low noise: 12 nV/√Hz
Low power: IDD = 10 μA
0.5 μs settling time
Built-in RFB 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 VREF = 10 V
Automotive operating temperature: –40°C to +125°C
Compact TSSOP-28 package
APPLICATIONS
Automatic test equipment
Instrumentation
Digitally controlled calibration
Digital waveform generation
FUNCTIONAL BLOCK DIAGRAM
R1 R_COM REF R_OFS
R1
R2
R_OFS R_FB
R_FB
V_DD
WR
LDAC
DB0 TO DB15
AD5546/
AD5556
CONTROL
LOGIC
DAC
16/14
DAC
REGISTER
I_OUT
GND
POR
MSB RS
Figure 1. AD5546/AD5556 Simplified Block Diagram
GENERAL DESCRIPTION
The AD5546/AD5556 are precision 16-/14-bit, multiplying, low
power, current output, parallel input digital-to-analog converters
(DACs). They operate from a single 2.7 V to 5.5 V supply with
±10 V multiplying references for four-quadrant outputs. Built-
in four-quadrant resistors facilitate the resistance matching and
temperature tracking that minimize the number of components
needed for multiquadrant applications. The feedback resistor
(RFB) simplifies the I-V conversion with an external buffer. The
AD5546/AD5556 are packaged in compact TSSOP-28 packages
with operating temperatures from –40°C to +125°C.
The EVAL-AD5546SDZ is available for evaluating DAC perfor-
mance. For more information, see the UG-309 evaluation board
user guide.
+10V
+
U2A
OP2177
–
C7
–10V
R1A
R_COMA
VREFA
R1
R2
R_OFSA R_FBA
R_OFS
R_FB
+15V
C6
C4
1µF
+5V
C1
1µF
C2
0.1µF
16-/14-BIT
DATA
V_DD
U1
AD5546/AD5556
WR LDAC RS MSB
16-/14-BIT
DATA
I_OUT
GND
C5
– _V+ ^0.1µF
U2B
OP2177
+ ^V–
C8
1µF
VOUT
WR
LDAC
C9
0.1µF
RS
MSB
–15V
Figure 2. 16-/14-Bit, Four-Quadrant Multiplying DAC with a Minimum of External Components
Rev. D
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.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: [phone]
www.analog.com
Fax: [phone] ©2004-2011 Analog Devices, Inc. All rights reserved.