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THS4601IDR
Wideband, FET-Input Operational Amplifier
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SLOS388B − OCTOBER 2001 − REVISED JUNE 2002
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FEATURES Gain Bandwidth Product: 180 MHz Slew Rate: 100 V/µs Maximum Input Bias Current: 100 pA Input Voltage Noise: 5.4 nV/√Hz Maximum Input Offset Voltage: 4 mV Input Impedance: 109 Ω || 10 pF Power Supply Voltage Range: ±5 to ±15 V Unity Gain Stable
APPLICATIONS Wideband Photodiode Amplifier High-Speed Transimpedance Gain Stage Test and Measurement Systems Current-DAC Output Buffer Active Filtering High-Speed Signal Integrator High-Impedance Buffer
DESCRIPTIONThe THS4601 is a high-speed, FET-input operational
amplifier designed for applications requiring wideband
operation, high-input impedance, and high-power
supply voltages. By providing a 180-MHz gain-
bandwidth product, ±15-V supply operation, and
100-pA input bias current, the THS4601 is capable of
wideband transimpedance gain and large output signal
swing simultaneously. Low current and voltage noise
allow amplification of extremely low-level input signals
while still maintaining a large signal-to-noise ratio.
The characteristics of the THS4601 ideally suit it for use
as a wideband photodiode amplifier. Photodiode output
current is a prime candidate for transimpedance
amplification, an application of which is illustrated in
Figure 1. Other potential applications include test and
measurement systems requiring high-input impedance,
digital-to-analog converter output buffering, high-speed
integration, and active filtering.
A SELECTION OF RELATED OPERATIONAL AMPLIFIER PRODUCTS THS4601
CF = 0.7 pF
RL = 1 kΩ0.1 1 10 100
Frequency − MHz
ransimpedance Gain − dB
100 kΩ TRANSIMPEDANCE BANDWIDTH
Figure 1. Wideband Photodiode
Transimpedance Amplifier
−VBiasPlease be aware that an important notice concerning availability, standard warranty, and use in critical applications of
