AD7873 Analog Devices, AD7873 Datasheet - Page 6

• Manufacturer Part Number: AD7873
• Description: Touch Screen Digitizer
• Manufacturer: Analog Devices

Specifications of AD7873

• Resolution (bits): 12bit
• # Chan: 6
• Sample Rate: 125kSPS
• Interface: Ser
• Analog Input Type: SE-Uni
• Ain Range: Uni (Vref),Uni 2.5V
• Adc Architecture: SAR
• Pkg Type: CSP,SOP

AD7873
ABSOLUTE MAXIMUM RATINGS
T
Table 3.
Parameter
+V
Analog Input Voltage to GND
Digital Input Voltage to GND
Digital Output Voltage to GND
V
Input Current to Any Pin Except Supplies
Operating Temperature Range
Junction Temperature
Power Dissipation
IR Reflow Soldering
Pb-free Parts Only
1
Transient currents of up to 100 mA do not cause SCR latch-up.
REF
A
Peak Temperature
Time-to-Peak Temperature
Ramp-Down Rate
Peak Temperature
Time-to-Peak Temperature
Ramp-Up Rate
Ramp-Down Rate
Commercial (A, B Versions)
Storage Temperature Range
CC
= 25°C, unless otherwise noted.
to GND
to GND
1
Rating
–0.3 V to +7 V
–0.3 V to V
–0.3 V to V
–0.3 V to V
–0.3 V to V
±10 mA
–40°C to +85°C
–65°C to +150°C
150°C
450 mW
220°C (±5°C)
10 sec to 30 sec
6°C/sec max
250°C
20 sec to 40 sec
3°C/sec max
6°C/sec max
CC
CC
CC
CC
+ 0.3 V
+ 0.3 V
+ 0.3 V
+ 0.3 V
Rev. E | Page 6 of 28
Stresses above those listed under Absolute Maximum Ratings
may cause permanent damage to the device. This is a stress
rating only; functional operation of the device at these or any
other conditions above those indicated in the operational
section of this specification is not implied. Exposure to absolute
maximum rating conditions for extended periods may affect
device reliability.
THERMAL RESISTANCE
soldered in a circuit board for surface-mount packages.
Table 4. Thermal Resistance
Package Type
16-Lead QSOP
16-Lead TSSOP
16-Lead LFCSP
ESD CAUTION
θ
JA
is specified for the worst-case conditions, that is, a device
θ
149.97
150.4
135.7
JA
θ
38.8
27.6
JC
Unit
°C/W
°C/W
°C/W