AD7522_15 Datasheet, PDF (1/6 Pages) Analog Devices – CMOS 10 BIT SUFFERED MULTIPLYING D/A CONVERTER

-.. ANALOG
CMOS10-Bit,
W DEVICES _{BufferedMultiplyin0g/ A Converter}
FEATURES
10-Bit Resolution
8-,9- & 10-Bit Linearity
Microprocessor Compatible
Double Buffered Inputs
Serial or Parallel Loading
DTL!TTL/CMOS Direct Interface
Nonlinearity Tempco: 2ppm of FSRfc
OBSOLETE GainTempco: 10ppmof FSRfc
Very Low Power Dissipation
Very Low Feedthrough
GENERAL DESCRIPTION
The AD7522 is a monolithic CMOS lO-bit multiplying D/A
converter, with an input buffer and a holding register, allowing
direct interface with microprocessors. Most applications re-
quire the addition of only an operational amplifier and a
reference voltage.
The key to easy interface to a data bus is the AD7522's ability
to load the input buffer in two bytes (an 8-bit and a 2-bit byte),
FUNCTIONAL DIAGRAM
Vcc
DGND _Vou
v." AGND
LDTR
RFB'
RFB2
Iou..
Iou"
and subsequently move this data to a holding register, where
the digital word is converted into an analog current or voltage
(with external operational amplifier). The input loading of
either 8 or 10 bits can be done in a parallel or serial mode.
The AD7522 is packaged in a 28-pin DIP, and operates with
a +15V main supply at 2mA max, and a logic supply of +5V
for TTL interface, or +10 to +15V for CMOS interface.
A thin film on high density CMOS process, using silicon
nitride passivation, ensures high reliability and excellent
stability.
DB' DBS
(MSB'
DB1 DB6 DBS DB4 DB3 DB2 DB' DOO
(lOB'
PIN CONFIGURATION
ORDERING INFORMATION
Nonlinearity
0 to +70°C
2LSB (S-Bit) AD7522JN
lLSB (9-Bit) AD7522KN
1I2LSB (to-Bit) AD7522LN
Temperature Range
-25°C to +S5°C -55°C to +125°C
AD7522JD
AD7522KD
AD7522LD
AD7522SD
AD7522TD
AD7522UD
PACKAGE IDENTIFICATION
Suffix "D": Ceramic DIP Package
Suffix UN": Plastic DIP Package
VDD
LDTR
v."
RFB2
RFB'
IDtJT1
'DtJT2
AGND
SRD
(MSB) DM
DBS
DB1
DB.
DBS
DGND
Vcc
SR'
HBS
LBS
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 which may result from its use. No license is granted by implica-
tion or otherwise under any patent or patent rights of Analog Devices.
One Technology Way; Norwood, MA 02062-9106 U.S.A.
Tel: [phone]
Twx: 710/394-6577
Telex: 174059
Cables: ANALOG NORWOODMASS
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