ABSOLUTE MAXIMUM RATINGS*
(T
A
= +25°C unless otherwise noted)
V
DD
to AGND . . . . . . . . . . . . . . . . . . . . . . . . . –0.3 V to +7 V
V
DD
to DGND . . . . . . . . . . . . . . . . . . . . . . . . . –0.3 V to +7 V
Analog Input Voltage to AGND
AD7892-1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ± 17 V
AD7892-2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . –0.3 V, V
DD
AD7892-3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ± 7 V
Reference Input Voltage to AGND . . . –0.3 V to V
DD
+ 0.3 V
Digital Input Voltage to DGND . . . . . –0.3 V to V
DD
+ 0.3 V
Digital Output Voltage to DGND . . . . –0.3 V to V
DD
+ 0.3 V
Operating Temperature Range
Commercial (A, B Versions) . . . . . . . . . . . –40°C to +85°C
Extended (S Version) . . . . . . . . . . . . . . . . –55°C to +125°C
Storage Temperature Range . . . . . . . . . . . . –65°C to +150°C
Parameter A Versions
1
B Versions S Version
2
Unit Test Conditions/Comments
LOGIC OUTPUTS
Output High Voltage, V
OH
4.0 4.0 4.0 V min I
SOURCE
= 200 µA
Output Low Voltage, V
OL
0.4 0.4 0.4 V max I
SINK
= 1.6 mA
DB11–DB0
Floating-State Leakage Current ± 10 ± 10 ± 10 µA max
Floating-State Capacitance
4
15 15 15 pF max
Output Coding
AD7892-1 and AD7892-3 Two’s Complement
AD7892-2 Straight (Natural) Binary
CONVERSION RATE
Conversion Time 1.47 1.47 µs max AD7892-3
Track/Hold Acquisition Time
3
0.2 0.2 µs max AD7892-3
Conversion Time 1.6 1.6 1.68 µs max AD7892-1 and AD7892-2
Track/Hold Acquisition Time
3
0.4 0.4 0.32 µs max AD7892-1 and AD7892-2
POWER REQUIREMENTS
V
DD
+5 +5 +5 V nom ± 5% for Specified Performance
I
DD
5
Normal Operation 18 18 19 mA max
Standby Mode
6
AD7892-2 250 250 µA typ
AD7892-3, AD7892-1 80 80 100 µA max typ 15 µA
Power Dissipation
5
Normal Operation 90 90 95 mW max V
DD
= +5 V. Typically 60 mW
Standby Mode
6
AD7892-2 1.25 1.25 mW typ
AD7892-3, AD7892-1 400 400 500 µW max V
DD
= +5 V. Typically 75 µW
NOTES
1
Temperature ranges are as follows: A, B Versions: –40°C to +85°C; S Version: –55°C to +125°C.
2
S Version available on AD7892-1 and AD7892-2 only.
3
See Terminology.
4
Sample tested @ +25°C to ensure compliance.
5
These normal mode and standby mode currents are achieved with resistors (in the range 10 kΩ to 100 kΩ) to either DGND or V
DD
on Pins 8, 9, 16 and 17.
6
A conversion should not be initiated on the part within 30 µs of exiting standby mode.
Specifications subject to change without notice.
AD7892
Junction Temperature . . . . . . . . . . . . . . . . . . . . . . . . . +150°C
Plastic DIP Package, Power Dissipation . . . . . . . . . . 450 mW
θ
JA
Thermal Impedance . . . . . . . . . . . . . . . . . . . . . 105°C/W
Lead Temperature (Soldering, 10 sec) . . . . . . . . . . . +260°C
Cerdip Package, Power Dissipation . . . . . . . . . . . . . . 450 mW
θ
JA
Thermal Impedance . . . . . . . . . . . . . . . . . . . . . . 70°C/W
Lead Temperature (Soldering, 10 sec) . . . . . . . . . . . +300°C
SOIC Package, Power Dissipation . . . . . . . . . . . . . . . 450 mW
θ
JA
Thermal Impedance . . . . . . . . . . . . . . . . . . . . . . 75°C/W
Lead Temperature, Soldering
Vapor Phase (60 sec) . . . . . . . . . . . . . . . . . . . . . . +215°C
Infrared (15 sec) . . . . . . . . . . . . . . . . . . . . . . . . . . +220°C
*Stresses above those listed under Absolute Maximum Ratings may cause perma-
nent damage to the device. This is a stress rating only; functional operation of the
device at these or any other conditions above those listed in the operational
sections of this specification is not implied. Exposure to absolute maximum rating
conditions for extended periods may affect device reliability.
REV. C
–3–