AD7478A

V_DD to GND................................................-0.3 V to 7 V
Analog Input Voltage to GND......0.3 V to V_DD + 0.3 V
Digital Input Voltage to GND....................0.3 V to 7 V
Digital Output Voltage to GND....0.3 V to V_DD + 0.3 V
Input Current to Any Pin Except Supplies².......±10 mA
Operating Temperature Range
Commercial (A, B Grade).................40°C to +85°C
Storage Temperature Range........65°C to +150°C
Junction Temperature..........................................150°C
SC70 Package
_JA Thermal Impedance...............................332°C/W
_JC Thermal Impedance..............................120°C/W
Lead Temperature, Soldering
Vapor Phase (60 secs)................................. +215°C
Infrared (15 secs)........................................ +220°C
ESD....................................................................... 4 KV

NOTES
1 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 listed in the operational sections of this specification is not implied.Exposure to absolute maximum rating conditions for extended periods may affect device reliability.
2 Transient currents of up to 100 mA will not cause SCR latch up.

The AD7476A/AD7477A/AD7478A are 12-bit, 10-bit and 8-bit, high speed, low power, successive-approximation ADCs respectively. The parts operate from a single 2.35 V to 5.25 V power supply and feature throughput rates up to 1 MSPS. The parts contain a low-noise, wide bandwidth track/hold amplifier which can handle input frequencies in excess of 6MHz.

The conversion process and data acquisition of AD7476A/AD7477A/AD7478A are controlled usingCS and the serial clock, allowing the devices to interface with microprocessors or DSPs. The input signal is sampled on the falling edge ofCS and the conversion is also initiated at this point. There are no pipelined delays associated with the part.

The AD7476A/AD7477A/AD7478A use advanced design techniques to achieve very low power dissipation at high throughput rates.