ALD4702A

Features:

* Rail-to-rail input and output voltage ranges
* Symmetrical push-pull class AB output drivers
* All parameters specified for +5V single supply or ±2.5V dual supply systems
* Inputs can extend beyond supply rails by 300mV
* Outputs settle to 2mV of supply rails
* High load capacitance capability up to 4000pF
* No frequency compensation required --unity gain stable
* Extremely low input bias currents --1.0pA typical
* Ideal for high source impedance applications
* Dual power supply ±2.5V to ±5.0V operation
* Single power supply +5V to +12V operation
* High voltage gain-typically 85V/mV @ ±2.5V and 250V/mV @ ±5.0V
* Drive as low as 2K load with 5mA drive current
* Output short circuit protected
* Unity gain bandwidth of 1.5MHz
* Slew rate of 1.9V/s
* Low power dissipation


Application

* Voltage amplifier
* Voltage follower/buffer
* Charge integrator
* Photodiode amplifier
* Data acquisition systems
* High performance portable instruments
* Signal conditioning circuits
* Sensor and transducer amplifiers
* Low leakage amplifiers
* Active filters
* Sample/Hold amplifier
* Picoammeter
* Current to voltage convert
* Coaxial cable driver


Pinout




Specifications

Supply voltage, V+referenced to V-................................... -0.3V to V++13.2V
Supply voltage, VS referenced to V-..................................................... ±6.6V
Differential input voltage range ...........................................-0.3V to V++0.3V 
Power dissipation.............................................................................. 600 mW
Operating temperature range PB, SB package........................0°C to +70°C
                                                DB package .......................-55°C to +125°C
Storage temperature range ...............................................-65°C to +150°C
Lead temperature, 10 seconds ..........................................................+260°C


Description

The ALD4702 is a quad monolithic precision CMOS rail-to-rail operational amplifier intended for a broad range of analog applications using ±2.5V to ±6V dual power supply systems, as well as +4V to +12V battery operated systems.  All ALD4702 characteristics are specified for +5V single supply or ±2.5V dual supply systems.  Total supply current for   four operational amplifiers is 6mA maximum at 5V supply voltage.  It is manufactured with Advanced Linear Devices' enhanced ACMOS silicon gate CMOS process.

The ALD4702 is designed to offer a trade-off of performance parameters providing a wide range of desired specifications.  It offers the popular industry pin configuration of LM324 and ICL7641 types.

The ALD4702 has been developed specifically with the +5V single supply or ±2.5V dual supply user.  Several important characteristics of the device make many applications easy  to implement for these supply voltages.  First, the operational amplifier can operate with rail to rail input and output voltages. This feature allows numerous analog serial stages to be implemented without losing operating voltage margin. Secondly, the device was designed to accommodate mixed applications where digital and analog circuits may work off the same 5V power supply.  Thirdly, the output stage can drive up to 400pF capacitive and 5K resistive loads in non-inverting unity gain connection and double the capacitance in the inverting unity gain mode.