Tektronix TCA-1 High Impedance Buffer Amplifier

Description:

The Tektronix TCA-1 High Impedance Buffer Amplifier is used to provide a high-impedance input interface between passive probes and TekConnect® oscilloscopes for accurate high-frequency signal acquisition. Commonly installed with Tektronix high-performance oscilloscopes in electronics laboratories, research facilities, manufacturing test stations, and calibration laboratories to preserve signal integrity while minimizing circuit loading. Maintenance technicians, calibration engineers, and system integrators use this buffer amplifier for oscilloscope upgrades, precision signal measurements, probe interfacing, and replacement of legacy high-impedance amplifier modules.

Applications:

The Tektronix TCA-1 High Impedance Buffer Amplifier is designed to extend the measurement capabilities of TekConnect-equipped oscilloscopes by supporting high-impedance passive voltage probes, high-voltage probes, current probes, and differential measurement accessories. It is commonly used for high-speed digital circuit analysis, analog signal measurements, power electronics testing, semiconductor development, RF laboratory measurements, and precision waveform analysis where low input capacitance and high bandwidth are essential.

Technical Specifications:

• Manufacturer: Tektronix, Inc.
• Model: TCA-1 (TCA-1MEG High Impedance Buffer Amplifier)
• Product Type: High Impedance Buffer Amplifier
• Oscilloscope Interface: TekConnect®
• Input Connector: TEKPROBE™ BNC (1 MΩ)
• Compatible Host Instruments: Tektronix TekConnect Oscilloscopes (TDS6000B, TDS7000 Series, CSA7000 Series, and compatible models)
• Bandwidth: DC to ≥500 MHz (with compatible ≥1.5 GHz TekConnect host instrument)
• Bandwidth Limits: Full Bandwidth, 100 MHz Limit, 20 MHz Limit
• Input Resistance: 1 MΩ ±1% (DC)
• Input Capacitance: 10 pF ±2 pF
• DC Gain Accuracy: ±3%
• Rise Time: ≤0.8 ns (Typical)
• Input Coupling: DC, AC, or GND
• Maximum Input Voltage: 150 VRMS CAT I, 100 VRMS CAT II (frequency derating applies)
• Compatible Accessories: P6139A/P6139B Passive Probe, P6015A High Voltage Probe, P5100 High Voltage Probe, P5205/P5210 Differential Probes, P6021/P6022 Current Probes, ADA400A Differential Preamplifier, and other TekConnect-compatible accessories
• Typical Applications: High-Speed Circuit Debugging, Signal Integrity Analysis, Semiconductor Testing, Power Electronics, Laboratory Measurement, Calibration, and Research & Development.

Common Replacements:

• Tektronix TCA-BNC TekConnect Adapter
• Tektronix TCA75 TekConnect Adapter
• Tektronix TAP1500 Active Probe