ANALOG DEVICES AD5547-EP Service Manual
Dual-Current Output, Parallel Input, 16-Bit
V
V
Multiplying DAC with 4-Quadrant Resistors
Data Sheet
FEATURES
Dual channel
16-bit resolution: AD5547-EP
2- or 4-quadrant, 6.8 MHz bandwidth multiplying DAC
±1 LSB DNL
±2 LSB INL
Operating supply voltage: 2.7 V to 5.5 V
Low noise: 12 nV/√Hz
Low power: I
0.5 μs settling time
Built-in R
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
Extended automotive operating temperature range
−55°C to +125°C
Selectable zero-scale/midscale power-on presets
Compact 38-lead TSSOP package
ENHANCED PRODUCT FEATURES
Supports defense and aerospace applications (AQEC
standard)
Military temperature range (such as −55°C to +125°C).
Controlled manufacturing baseline
One assembly/test site
One fabrication site
Enhanced product change notification
Qualification data available on request
APPLICATIONS
Automatic test equipment
Instrumentation
Digitally controlled calibration
Digital waveform generation
= 10 μA maximum
DD
facilitates current-to-voltage conversion
FB
= 10 V
REF
REF
U1
–VREF
AD5547-EP
FUNCTIONAL BLOCK DIAGRAM
R
R
COMA
1A
V
D0 TO D15
WR
A0, A1
DD
D0 TO
D15
DAC A
DAC B
ADDR
DECODE
INPUT
REGISTER
INPUT
REGISTER
POWER
ON
RESET
MSB LDACDGND
RS
REGISTER
RS
REGISTER
RS
Figure 1.
GENERAL DESCRIPTION
The AD5547-EP is a dual precision, 16-bit, multiplying, low power,
current-output, parallel input, digital-to-analog converter (DAC). It
is designed to operate from a single +5 V supply with ±10 V
multiplying references for 4-quadrant outputs with a 6.8 MHz
bandwidth.
The built-in, 4-quadrant resistors facilitate resistance matching
and temperature tracking, which minimize the number of
components needed for multiquadrant applications. In addition,
the feedback resistor (R
an external buffer.
The AD5547-EP is available in a compact, 38-lead TSSOP
package and operates at the extended automotive temperature
range of −55°C to +125°C. Additional application and technical
information can be found in the AD5547 data sheet.
) simplifies the I-to-V conversion with
FB
R
OFSA
REFA
DAC A
RS
DAC B
RS
AD5547-EP
R
1B
R
DAC A
DAC B
COMB
V
REFB
R
FBA
I
OUTA
AGNDA
AGNDB
I
OUTB
R
FBB
R
OFSB
10108-013
C1
R
R
1A
R1 R2
16-BIT DATA
WR
LDAC
RS
MSB
A0, A1
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.
Figure 2. 16-Bit 4-Quadrant Multiplying DAC with Minimum of External Components (Only One Channel Is Shown)
AD5547-EP
POWER-ON
WR RSLDAC
COMA
RESET
V
MSB A0,A1
2
R
REFA
OFSARFBA
RFBROFS
16-BIT
DAC A
(ONE CHANNEL SHOWN O NLY)
C2
IOUTA
AGNDA
U2
VOUTA
–VREF TO +VREF
10108-002
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700 www.analog.com
Fax: 781.461.3113 ©2011 Analog Devices, Inc. All rights reserved.
AD5547-EP Data Sheet
TABLE OF CONTENTS
Features.............................................................................................. 1
Enhanced Product Features ............................................................ 1
Applications....................................................................................... 1
Functional Block Diagram .............................................................. 1
General Description ......................................................................... 1
Revision History ............................................................................... 2
Specifications..................................................................................... 3
REVISION HISTORY
9/11—Revision 0: Initial Version
Electrical Characteristics..............................................................3
Absolute Maximum Ratings ............................................................5
ESD Caution...................................................................................5
Pin Configuration and Function Descriptions..............................6
Typical Performance Characteristics..............................................8
Outline Dimensions....................................................................... 10
Ordering Guide .......................................................................... 10
Rev. 0 | Page 2 of 12
Data Sheet AD5547-EP
SPECIFICATIONS
ELECTRICAL CHARACTERISTICS
VDD = 2.7 V to 5.5 V, I
Table 1.
Parameter Symbol Test Conditions/Comments Min Typ Max Unit
STATIC PERFORMANCE1
Resolution N 1 LSB = V
Relative Accuracy INL ±2 LSB
Differential Nonlinearity DNL Monotonic ±1 LSB
Output Leakage Current I
Data = zero scale, TA = TA maximum 20 nA
Full-Scale Gain Error G
Bipolar Mode Gain Error GE Data = full scale ±1 ±5 mV
Bipolar Mode Zero-Scale Error G
Full-Scale Temperature Coefficient2 TCVFS 1 ppm/°C
REFERENCE INPUT
V
Range V
REF
REF Input Resistance REF 4 5 6 kΩ
R1 and R2 Resistance R1 and R2 4 5 6 kΩ
R1-to-R2 Mismatch Δ(R1 to R2) ±0.5 ±1.5 Ω
Feedback and Offset Resistance RFB, R
Input Capacitance2 C
ANALOG OUTPUT
Output Current I
Output Capacitance2 C
LOGIC INPUT AND OUTPUT
Logic Input Low Voltage VIL V
V
Logic Input High Voltage VIH V
V
Input Leakage Current IIL 10 μA
Input Capacitance2 C
INTERFACE TIMING
Data to WR Setup Time
V
Data to WR Hold Time
V
WR Pulse Width
V
LDAC Pulse Width t
V
RS Pulse Width
V
WR to LDAC Delay Time
V
SUPPLY CHARACTERISTICS
Power Supply Range V
Positive Supply Current IDD Logic inputs = 0 V 10 μA
Power Dissipation P
Power Supply Sensitivity
= virtual GND, GND = 0 V, V
OUT
Data = zero scale, TA = 25°C 10 nA
OUT
Data = full scale ±1 ±5 mV
FSE
Data = full scale ±1 ±4 mV
ZSE
−18 +18 V
REF
8 10 12 kΩ
OFS
5 pF
REF
Data = full scale 2 mA
OUT
Code dependent 200 pF
OUT
10 pF
2, 3
See Figure 3
IL
t
V
DS
t
V
DH
t
V
WR
V
LDAC
t
V
RS
t
V
LWD
2.7 5.5 V
DD RANGE
Logic inputs = 0 V 0.055 mW
DISS
P
∆VDD = ±5% 0.003 %/%
SS
= −10 V to +10 V, TA = −55°C to +125°C, unless otherwise noted.
REF
/216 = 153 μV at V
REF
= 5 V 0.8 V
DD
= 3 V 0.4 V
DD
= 5 V 2.4 V
DD
= 3 V 2.1 V
DD
= 5 V 20 ns
DD
= 3 V 35 ns
DD
= 5 V 0 ns
DD
= 3 V 0 ns
DD
= 5 V 20 ns
DD
= 3 V 35 ns
DD
= 5 V 20 ns
DD
= 3 V 35 ns
DD
= 5 V 20 ns
DD
= 3 V 35 ns
DD
= 5 V 0 ns
DD
= 3 V 0 ns
DD
= 10 V 16 Bits
REF
Rev. 0 | Page 3 of 12
AD5547-EP Data Sheet
C
Parameter Symbol Test Conditions/Comments Min Typ Max Unit
AC CHARACTERISTICS4
Output Voltage Settling Time tS
To ±0.1% of full scale, data cycles from zero scale
to full scale to zero scale
Reference Multiplying Bandwidth BW V
DAC Glitch Impulse Q V
Multiplying Feedthrough Error V
OUT/VREF
V
Digital Feedthrough QD
Total Harmonic Distortion THD V
= 100 mV rms, data = full scale 6.8 MHz
REF
= 0 V, midscale – 1 to midscale −3.5 nV-s
REF
= 100 mV rms, f = 10 kHz −78 dB
REF
= 1, LDAC toggles at 1 MHz
WR
= 5 V p-p, data = full scale, f = 1 kHz −104 dB
REF
Output Noise Density eN f = 1 kHz, BW = 1 Hz 12 nV/√Hz
Analog Crosstalk CAT
Signal input at Channel A and measures the
output at Channel B, f = 1 kHz
1
All static performance tests (except I
tied to the amplifier output. The +IN pin of the OP97 is grounded, and the I
measured at 25°C.
2
Guaranteed by design; not subject to production testing.
3
All input control signals are specified with tR = tF = 2.5 ns (10% to 90% of 3 V) and are timed from a voltage level of 1.5 V.
4
All ac characteristic tests are performed in a closed-loop system using an AD8038 I-to-V converter amplifier except for THD where the AD8065 was used.
) are performed in a closed-loop system using an external precision OP97 I-to-V converter amplifier. The device RFB terminal is
OUT
of the DAC is tied to the OP97’s −IN pin. Typical values represent average readings
OUT
Timing Diagram
t
WR
WR
0.5 μs
7 nV-s
−95 dB
DATA
t
DH
t
LWD
t
LDAC
t
RS
10108-018
LDA
RS
t
DS
Figure 3. AD5547-EP Timing Diagram
Rev. 0 | Page 4 of 12
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