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AD7524SRZ-EP-RL7

P1-P3P4-P6P7-P7
CMOS, 8-Bit,
Buffered Multiplying DAC
Enhanced Product
AD7524-EP
Rev. A Document Feedback
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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.
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One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700 ©2012–2018 Analog Devices, Inc. All rights reserved.
Technical Support www.analog.com
FEATURES
Microprocessor compatible (6800, 8085, Z80)
TTL-/CMOS-compatible inputs
On-chip data latches
Endpoint linearity
Low power consumption
Monotonicity guaranteed (full temperature range)
Latch free (no protection Schottky required)
ENHANCED PRODUCT FEATURES
Supports defense and aerospace applications (AQEC)
Military temperature range (−55°C to +125°C)
Controlled manufacturing baseline
One assembly/test site
One fabrication site
Product change notification
Qualification data available on request
APPLICATIONS
Microprocessor controlled gain circuits
Microprocessor controlled attenuator circuits
Microprocessor controlled function generation
Precision AGC circuits
Bus structured instruments
FUNCTIONAL BLOCK DIAGRAM
01132-001
20kΩ
S1
10kΩ
20kΩ
S2
10kΩ
20kΩ
S3
10kΩ
20kΩ
S8
20kΩ
OUT2
GND
R
FB
OUT1
DATA LATCHES
10kΩ
3
WRITE
13
V
REF
15
V
DD
14
CHIP SELECT
12
2
1
16
AD7524-EP
DB6
5
DB7
(MSB)
4
DB0
(LSB)
DB5
36
DATA INPUTS
Fig
ure 1.
GENERAL DESCRIPTION
The AD7524-EP is a low cost, 8-bit monolithic CMOS DAC
designed for direct interface to most microprocessors.
An 8-bit DAC with input latches, the load cycle of the AD7524-EP
is similar to the write cycle of the random access memory. Using
an advanced thin-film on the CMOS fabrication process, the
AD7524-EP provides accuracy to ⅛ LSB with a typical power
dissipation of less than 10 mW.
An improved design eliminates the protection Schottky previously
required and guarantees TTL compatibility when using a 5 V
supply. The loading speed has also been increased for compatibility
with most microprocessors.
Featuring operation from 5 V to 15 V, the AD7524-EP interfaces
directly to most microprocessor buses or output ports.
Excellent multiplying characteristics (2- or 4-quadrant) make
the AD7524-EP an ideal choice for many microprocessor
controlled gain setting and signal control applications.
Additional application and technical information can be found
in the AD7524 data sheet.
AD7524-EP Enhanced Product
Rev. A | Page 2 of 7
TABLE OF CONTENTS
Features .............................................................................................. 1
Enhanced Product Features ............................................................ 1
Applications ....................................................................................... 1
Functional Block Diagram .............................................................. 1
General Description ......................................................................... 1
Revision History ............................................................................... 2
Specifications ..................................................................................... 2
Write Cycle Timing Diagram.......................................................4
Absolute Maximum Ratings ............................................................5
ESD Caution...................................................................................5
Pin Configuration and Function Descriptions ..............................6
Outline Dimensions ..........................................................................7
Ordering Guide .............................................................................7
REVISION HISTORY
3/2018— Rev. 0 to Rev. A
Change to Features Section ............................................................. 1
Changes to Ordering Guide ............................................................ 7
1/2012—Revision 0: Initial Version
Enhanced Product AD7524-EP
Rev. A | Page 3 of 7
SPECIFICATIONS
V
REF
= 10 V, V
OUT1
= V
OUT2
= 0 V, u nless otherwise noted. Temperature range goes from −55°C to +125°C.
Table 1.
Limit, T
A
= 25°C Limit, T
MIN
, T
MAX
1
Test Conditions/
Parameter V
DD
= 5 V V
DD
= 15 V V
DD
= 5 V V
DD
= 15 V Unit Comments
STATIC PERFORMANCE
Resolution 8 8 8 8 Bits
Relative Accuracy ±1/2 ±1/2 ±1/2 ±1/2 LSB max
Monotonicity Guaranteed Guaranteed Guaranteed Guaranteed
Gain Error
2
±2½ ±1¼ ±3½ ±1½ LSB max
Average Gain TC
3
±40 ±10 ±40 ±10 ppm/°C Gain TC measured from
25°C to T
MIN
or from
25°C to T
MAX
DC Supply Rejection, ΔGain/ΔV
DD
3
0.08 0.02 0.16 0.04 % FSR/%
max
ΔV
DD
= ±10%
0.002 0.001 0.01 0.005 % FSR/% typ
Output Leakage Current
I
OUT1
(Pin 1) ±50 ±50 ±400 ±200 nA max DB0 to DB7 = 0 V;
WR
,
CS
= 0 V; V
REF
= ±10 V
I
OUT2
(Pin 2) ±50 ±50 ±400 ±200 nA max DB0 to DB7 = V
DD
;
WR
,
CS
= 0 V; V
REF
= ±10 V
DYNAMIC PERFORMANCE
Output Current Settling Time
(to ½ LSB)
3
400 250 500 350 ns max OUT1 load = 100 Ω,
C
EXT
= 13 pF;
WR
,
CS
= 0 V;
DB0 to DB7 = 0 V to
V
DD
to 0 V
AC Feedthrough
3
At OUT1 0.25 0.25 0.5 0.5 % FSR max V
REF
= ±10 V, 100 kHz sine
wave; DB0 to DB7 = 0 V;
WR
,
CS
= 0 V
At OUT2 0.25 0.25 0.5 0.5 % FSR max V
REF
= ±10 V, 100 kHz sine
wave; DB0 to DB7 = 0 V;
WR
,
CS
= 0 V
REFERENCE INPUT
R
IN
(Pin 15 to GND)
4
5 5 5 5 kΩ min
20 20 20 20 kΩ max
ANALOG OUTPUTS
Output Capacitance
3
C
OUT1
(Pin 1) 120 120 120 120 pF max DB0 to DB7 = V
DD
;
WR
,
CS
= 0 V
C
OUT2
(Pin 2) 30 30 30 30 pF max
C
OUT1
(Pin 1) 30 30 30 30 pF max DB0 to DB7 = 0 V;
WR
,
CS
= 0 V
C
OUT2
(Pin 2) 120 120 120 120 pF max
DIGITAL INPUTS
Input High Voltage Requirement, V
IH
2.4 13.5 2.4 13.5 V min
Input Low Voltage Requirement, V
IL
0.8 1.5 0.5 1.5 V max
Input Current, I
IN
±1
±1
±10
±10
V
IN
= 0 V or V
DD
Input Capacitance
3
DB0 to DB7 5 5 5 5 pF max V
IN
= 0 V
WR
,
CS
20 20 20 20 pF max V
IN
= 0 V
P1-P3P4-P6P7-P7

AD7524SRZ-EP-RL7

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Manufacturer:
Analog Devices Inc.
Description:
Digital to Analog Converters - DAC 8-BIT LATCHED DAC
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