2MHz, Operational Transconductance Amplifier (OTA)

The CA3080 and CA3080A types are Gatable-Gain Blocks which utilize the unique operational-transconductance-amplifier (OTA) concept described in Application Note AN6668, “Applications of the CA3080 and CA3080A High-Performance Operational Transconductance Amplifiers”.

The CA3080 and CA3080A types have differential input and a single-ended, push-pull, class A output. In addition, these types have an amplifier bias input which may be used either for gating or for linear gain control. These types also have a high output impedance and their transconductance (gM) is directly proportional to the amplifier bias current (IABC).

Features

• Slew Rate (Unity Gain, Compensated) . . . . . . . . . 50V/s

• Adjustable Power Consumption . . . . . . . . . . . .10W to 30W

• Flexible Supply Voltage Range . . . . . . . . . . . . 2V to 15V

• Fully Adjustable Gain . . . . . . . . . . . . . . . . .0 to gMRL Limit

• Tight gM Spread:

- CA3080. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2:1

- CA3080A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.6:1

• Extended gM Linearity . . . . . . . . . . . . . . . . . . . 3 Decades

Applications

• Sample and Hold

• Comparator

• Voltage Follower

• Multiplier

• Multiplexer