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AD5447 - Analog Devices - (AD5424 - AD5547) High Bandwidth Multiplying DACs

Номер произв AD5447
Описание (AD5424 - AD5547) High Bandwidth Multiplying DACs
Производители Analog Devices
логотип Analog Devices логотип 
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AD5447 Даташит, Описание, Даташиты
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: IDD = 10 µA max
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
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.
VREF
U1
–VREF
C1
FUNCTIONAL BLOCK DIAGRAM
R1A
RCOMA VREFA ROFSA
VDD
D0–D15
(AD5547)
D0–D13
(AD5557)
D0..D15
OR
D0..D13
WR
A0, A1
DAC A
DAC B
ADDR
DECODE
INPUT
REGISTER
RS
DAC A
REGISTER
RS
DAC A
INPUT
REGISTER
RS
DAC B
REGISTER
RS
DAC B
POWER
ON
RESET
AD5547/AD5557
RFBA
IOUTA
AGNDA
AGNDB
IOUTB
RFBB
ROFSB
DGND
RS MSB LDAC
Figure 1.
R1B
RCOMB VREFB
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 (RFB) 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.
16/14 DATA
R1A RCOMA VREFA
R1 R2
AD5547/AD5557
POWER-ON
RESET
ROFSA RFBA
ROFS
16-/14-BIT
DAC A
RFB
IOUTA
AGNDA
C2
U2
VOUTA
–VREF TO +VREF
WR
LDAC
RS
MSB
A0, A1
WR LDAC RS
MSB A0, A1
2 (ONE CHANNEL SHOWN ONLY)
Figure 2. 16/14-Bit 4-Quadrant Multiplying DAC with Minimum of External Components (Only One Channel Shown)
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.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
www.analog.com
Fax: 781.326.8703 © 2004 Analog Devices, Inc. All rights reserved.
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AD5447 Даташит, Описание, Даташиты
AD5547/AD5557
TABLE OF CONTENTS
Specifications..................................................................................... 3
Absolute Maximum Ratings............................................................ 5
ESD Caution.................................................................................. 5
Pin Configurations and Function Descriptions ........................... 6
Typical Performance Characteristics ............................................. 9
Circuit Operation ........................................................................... 12
D/A Converter Section .............................................................. 12
Digital Section............................................................................. 13
REVISION HISTORY
Revision 0: Initial Version
PCB Layout, Power Supply Bypassing, and Ground
Connections ................................................................................ 13
Applications..................................................................................... 14
Unipolar Mode ........................................................................... 14
Bipolar Mode .............................................................................. 16
Outline Dimensions ....................................................................... 19
Ordering Guide .......................................................................... 19
Rev. 0 | Page 2 of 20
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AD5447 Даташит, Описание, Даташиты
AD5547/AD5557
SPECIFICATIONS
VDD = 2.7 V to 5.5 V, IOUT = Virtual GND, GND = 0 V, VREF = –10 V to +10 V, TA = –40°C to +125°C, unless otherwise noted.
Table 1. Electrical Characteristics
Parameter
STATIC PERFORMANCE1
Resolution
Relative Accuracy
Differential Nonlinearity
Output Leakage Current
Full-Scale Gain Error
Bipolar Mode Gain Error
Bipolar Mode Zero-Scale Error
Full-Scale Tempco2
REFERENCE INPUT
VREF Range
REF Input Resistance
R1 and R2 Resistance
R1-to-R2 Mismatch
Feedback and Offset Resistance
Input Capacitance2
ANALOG OUTPUT
Output Current
Output Capacitance2
LOGIC INPUT AND OUTPUT
Logic Input Low Voltage
Logic Input High Voltage
Input Leakage Current
Input Capacitance2
INTERFACE TIMING2, 3
Data to WR Setup Time
Data to WR Hold Time
WR Pulse Width
LDAC Pulse Width
RS Pulse Width
WR to LDAC Delay Time
SUPPLY CHARACTERISTICS
Power Supply Range
Positive Supply Current
Power Dissipation
Power Supply Sensitivity
Symbol
N
INL
DNL
IOUT
GFSE
GE
GZSE
TCVFS
VREF
REF
R1 and R2
∆(R1 to R2)
RFB, ROFS
CREF
IOUT
COUT
VIL
VIH
IIL
CIL
tDS
tDH
tWR
tLDAC
tRS
tLWD
VDD RANGE
IDD
PDISS
PSS
Conditions
AD5547, 1 LSB = VREF/216 = 153 µV at VREF = 10 V
AD5557, 1 LSB = VREF/214 = 610 µV at VREF = 10 V
Grade: AD5557C
Grade: AD5547B
Monotonic
Data = zero scale, TA = 25°C
Data = zero scale, TA = TA maximum
Data = full scale
Data = full scale
Data = full scale
Data = full scale
Code dependent
VDD = 5 V
VDD = 3 V
VDD = 5 V
VDD = 3 V
VDD = 5 V
VDD = 3 V
VDD = 5 V
VDD = 3 V
VDD = 5 V
VDD = 3 V
VDD = 5 V
VDD = 3 V
VDD = 5 V
VDD = 3 V
VDD = 5 V
VDD = 3 V
Logic inputs = 0 V
Logic inputs = 0 V
∆VDD = ±5%
Min Typ Max
16
14
±1
±2
±1
10
20
±1 ±4
±1 ±4
±1 ±3
1
–18 +18
45 6
45 6
±0.5 ±1.5
8 10 12
5
2
200
0.8
0.4
2.4
2.1
10
10
20
35
0
0
20
35
20
35
20
35
0
0
2.7 5.5
10
0.055
0.003
Unit
Bits
Bits
LSB
LSB
LSB
nA
nA
mV
mV
mV
ppm/°C
V
kΩ
kΩ
kΩ
pF
mA
pF
V
V
V
V
µA
pF
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
V
µA
mW
%/%
Rev. 0 | Page 3 of 20
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