Datasheet

ADC78H89
www.ti.com SNAS201D –APRIL 2003–REVISED MARCH 2013
ABSOLUTE MAXIMUM RATINGS
(1) (2)
Analog Supply Voltage AV
DD
−0.3V to 6.5V
Digital Supply Voltage DV
DD
−0.3V to AV
DD
+ 0.3V, max 6.5V
Voltage on Any Pin to GND −0.3V to AV
DD
+0.3V
Input Current at Any Pin
(3)
±10 mA
Package Input Current
(3)
±20 mA
Power Dissipation at T
A
= 25°C See
(4)
ESD Susceptibility
(5)
Human Body Model 2500V
Machine Model 250V
Soldering Temperature, Infrared, 10 seconds
(6)
260°C
Junction Temperature +150°C
Storage Temperature −65°C to +150°C
(1) Absolute maximum ratings are limiting values which indicate limits beyond which damage to the device may occur. Operating Ratings
indicate conditions for which the device is functional, but do not ensure specific performance limits. For specifications and test
conditions, see the Electrical Characteristics. The specifications apply only for the test conditions listed. Some performance
characteristics may degrade when the device is not operated under the listed test conditions.
(2) All voltages are measured with respect to GND = 0V, unless otherwise specified.
(3) When the input voltage at any pin exceeds the power supplies (that is, V
IN
< AGND or V
IN
> V
A
or V
D
), the current at that pin should be
limited to 10 mA. The 50 mA maximum package input current rating limits the number of pins that can safely exceed the power supplies
with an input current of 10 mA to five.
(4) The absolute maximum junction temperature (T
J
max) for this device is 150°C. The maximum allowable power dissipation is dictated by
T
J
max, the junction-to-ambient thermal resistance (θ
JA
), and the ambient temperature (T
A
), and can be calculated using the formula
P
D
MAX = (T
J
max − T
A
)/θ
JA
. The values for maximum power dissipation listed above will be reached only when the ADC78H89 is
operated in a severe fault condition (e.g. when input or output pins are driven beyond the power supply voltages, or the power supply
polarity is reversed). Obviously, such conditions should always be avoided.
(5) Human body model is 100 pF capacitor discharged through a 1.5 kΩ resistor. Machine model is 220 pF discharged through ZERO
ohms.
(6) See http://www.ti.com/ for other methods of soldering surface mount devices.
OPERATING RATINGS
(1) (2)
Operating Temperature Range −40°C ≤ T
A
≤ +85°C
AV
DD
Supply Voltage +2.7V to +5.25V
DV
DD
Supply Voltage +2.7V to AV
DD
Digital Input Pins Voltage Range -0.3V to AV
DD
Clock Frequency 50 kHz to 8 MHz
Analog Input Voltage 0V to AV
DD
(1) Absolute maximum ratings are limiting values which indicate limits beyond which damage to the device may occur. Operating Ratings
indicate conditions for which the device is functional, but do not ensure specific performance limits. For specifications and test
conditions, see the Electrical Characteristics. The specifications apply only for the test conditions listed. Some performance
characteristics may degrade when the device is not operated under the listed test conditions.
(2) All voltages are measured with respect to GND = 0V, unless otherwise specified.
PACKAGE THERMAL RESISTANCE
Package θ
JA
16-lead TSSOP on 4-layer, 2 oz. PCB 96°C / W
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