–3–
REV. 0
AD8582
WARNING!
ESD SENSITIVE DEVICE
CAUTION
ESD (electrostatic discharge) sensitive device. Electrostatic charges as high as 4000 V readily
accumulate on the human body and test equipment and can discharge without detection.
Although the AD8582 features proprietary ESD protection circuitry, permanent damage may
occur on devices subjected to high energy electrostatic discharges. Therefore, proper ESD
precautions are recommended to avoid performance degradation or loss of functionality.
ABSOLUTE MAXIMUM RATINGS*
VDD to DGND & AGND . . . . . . . . . . . . . . . . . . . –0.3 V, +7 V
Logic Inputs to DGND . . . . . . . . . . . . . . . –0.3 V, VDD + 0.3 V
VOUT to AGND . . . . . . . . . . . . . . . . . . . . . –0.3 V, VDD + 0.3 V
VREF to AGND . . . . . . . . . . . . . . . . . . . . . –0.3 V, VDD + 0.3 V
AGND to DGND . . . . . . . . . . . . . . . . . . . . . . . . . –0.3 V, VDD
IOUT Short Circuit to GND . . . . . . . . . . . . . . . . . . . . . . 50 mA
Package Power Dissipation . . . . . . . . . . . . . . . (TJ max–TA)/θJA
Thermal Resistance,
θ
JA
24-Pin Plastic DIP Package (N-24) . . . . . . . . . . . . . 62
°C/W
24-Lead SOIC Package (SOL-24) . . . . . . . . . . . . . . 73
°C/W
Maximum Junction Temperature (TJ max) . . . . . . . . . . 150
°C
Operating Temperature Range . . . . . . . . . . . . . –40
°C to +85°C
Storage Temperature Range . . . . . . . . . . . . . –65
°C to +150°C
Lead Temperature (Soldering, 10 sec) . . . . . . . . . . . . . +300
°C
*Stresses above those listed under “Absolute Maximum Ratings” may cause
permanent damage to the device. This is a stress rating only and functional
operation of the device at these or any other conditions above those indicated in the
operational sections of this specification is not implied. Exposure to absolute
maximum rating conditions for extended periods may affect device reliability.
PIN DESCRIPTION
Pin No.
Name
Description
1, 24
VOUTA
Voltage outputs from the DACs. Fixed
VOUTB
output voltage range of 0 V to 4.095 V
with 1 mV/LSB. An internal
temperature stabilized reference
maintains a fixed full-scale voltage
independent of time, temperature and
power supply variations.
2
AGND
Analog Ground. Ground reference for
the internal bandgap reference voltage,
the DAC, and the output buffer.
3
DGND
Digital ground for input logic.
4, 21
LDA,
Load DAC register strobes. Transfers
LDB
input register data to the DAC registers.
Active low inputs, Level sensitive latch.
May be connected together to double-
buffer load DAC registers.
5
MSB
Digital Input: High presets DAC
registers to half scale (800H), Low
clears DAC registers to zero (000H)
upon RST assertion.
6
RST
Active low digital input that clears the
DAC register to zero, setting the DAC
to minimum scale when MSB pin = 0,
or half-scale when MSB pin = 1.
7–18
DB0–11
Twelve Binary Data Bit Inputs. DB11 is
the MSB and DB0 is the LSB.
19
CS
Chip Select. Active low input.
20
A
/B
Select DAC A = 0 or DAC B = 1.
22
VDD
Positive Supply. Nominal value +5 V,
±5%.
23
VREF
Nominal 2.5 V reference output
voltage. This node must be buffered if
required to drive external loads.
PIN CONFIGURATIONS
N-24
24-Pin Plastic DIP
SOL-24
24-Pin SOIC
VOUTA
AGND
VOUTB
VREF
MSB
DB0
DB11
DGND
VDD
DB1
DB10
DB2
DB9
DB3
DB8
DB4
DB7
DB5
DB6
14
1
2
24
23
5
6
7
20
19
18
3
4
22
21
8
17
9
16
10
15
11
TOP VIEW
(Not to Scale)
12
13
AD8582
LDA
RST
LDB
CS
A/B
TOP VIEW
(Not to Scale)
12
13
AD8582
1
24
LDA, LDB
CS
A/B
D0–D11
RST
t
AS
t
AH
t
DS
t
DH
t
LDW
t
RSW
t
LS
t
LH
VOUT
t
S
t
S
± 1LSB
ERROR BAND
t
CSW
Timing Diagram
ORDERING INFORMATION*
Temperature
Package
Model
Range
Description
Option
AD8582AN
–40
°C to +85°C 24-Pin Plastic DIP N-24
AD8582AR
–40
°C to +85°C 24-Lead SOIC
SOL-24
AD8582Chips
+25
°C
Die
*For die specifications contact your local Analog Devices sales office. The
AD8582 contains 1270 transistors.