Inside

• Optoislated feedback amplifier with 1.24 V precision voltage reference
• EVM available for TLC320AD50 DSP analog interface
• 300 DPI linear sensor array with hold
• Precision Hi-Speed Light-to-Voltage Converters
• Low-power rail-to-rail op amps in SOT-23
• High output drive rail-to-rail op amp consumes only 50 µA per channel
• New CD-based "Designer's Guide and Data Book" allows for powerful searches
• 2.5 V Power management for DSP systems
• EVM available for TLC320AD75C ADA converter
• Programmable gain select is added to TI's combo family
• Single chip interface solution for the 9-pin GeoPort™ host
• 400 Mbps, high-speed data transmission
• PCI1220/1250A: Industry-leading CardBus soltions for tomorrow's applications
• Universal Serial Bus (USB) hub solutions

High output drive rail-to-rail op amp consumes only 50 µA per channel

Product Features

• Micropower operation: I_DD = 50 µA per channel
• Rail-to-Rail output
• High input impedance (I_IB = 1 pA) for sensor interface
• Low noise: 18nV/ (@ 1 kHz)
• 600 output drive
• Specified over commercial (0°C to 70°C) and industrial (–40°C to 85°C) temp ranges

The TLV2422 is a micro-power rail-to-rail CMOS dual op amp designed for low voltage applications. It is the latest addition to Texas Instruments broad portfolio of rail-to-rail CMOS amplifier products . The device consumes only 50 µA (typ) of supply current per channel making it ideal for battery powered systems. It has a supply voltage range from 2.7 V to 10 V and along with micropower consumption makes it a good choice for portable equipment. It is characterized at both 3 V and 5 V.

This op amp has low input bias current (I_IB = 1 pA) for interfacing to high impedance sensors. Precision dc applications are also well served with an input offset voltage of 300 µV (typ) and a 5 V noise level of only 18 nV/. This noise level is the lowest in industry for micropower CMOS op amp solutions.

The product features wide dynamic range on both the input and output. The input common mode range includes the negative rail and swings to within 0.25 V of the positive rail. The output provides full rail-to-rail performance with increased output drive. While only consuming micro ampere levels of current, the TLV2422 can drive 600 loads for telecom applications.

The TLV2422 is the third member of a family of high output drive rail-to-rail CMOS op amps. The TLV2442 and TLV2432 are the high speed and low power members respectively. The TLV2442 has 1.75 MHz of bandwidth and 1.3 V/µs slew rate for higher speed applications. The TLV2432 only requires a maximum of 250 µA (both channels) of supply current, but still provides 500 kHz of bandwidth.

All three products are available in an 8-pin SOIC and the ultra low profile 8-pin TSSOP.

To order your free copy of the:

• TLV2422