TLC4502ACDR

The TLC4501 and TLC4502 are the highest precision CMOS single supply rail-to-rail operational amplifiers available today. The input offset voltage is 10 μV typical and 40 μV maximum. This exceptional precision, combined with a 4.7-MHz bandwidth, 2.5-V/μs slew rate, and 50-mA output drive, is ideal for multiple applications including: data acquisition systems, measurement equipment, industrial control applications, and portable digital scales. These amplifiers feature self-calibrating circuitry which digitally trims the input offset voltage to less than 40 μV within the first 300 ms of operation. The offset is then digitally stored in an integrated successive approximation register (SAR). Immediately after the data is stored, the calibration circuitry effectively drops out of the signal path, shuts down, and the device functions as a standard operational amplifier. Using this technology eliminates the need for noisy and expensive chopper techniques, laser trimming, and power hungry, split supply bipolar operational amplifiers.

Applications

• data acquisition systems
• measurement equipment
• industrial control applications
• portable digital scales

Key features

• Self-Calibrates Input Offset Voltage to 40 μV Max
• Low Input Offset Voltage Drift... 1 μV/°C
• Input Bias Current... 1 pA
• Open Loop Gain... 120 dB
• Rail-To-Rail Output Voltage Swing
• Stable Driving 1000 pF Capacitive Loads
• Gain Bandwidth Product... 4.7 MHz
• Slew Rate... ±2.5 V/μs
• High Output Drive Capability... ±50 mA
• Calibration Time... 300 ms
• Characterized From -55°C to 125°C