SR554 - Transformer Preamplifier
SR554
Transformer-coupled input 0.1 nV/√Hz input noise 0.1 Hz to 40 kHz bandwidth Single-ended and differential inputs >40 dB isolation (DC to 500 MHz)
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说明
Transformer-coupled input 0.1 nV/√Hz input noise 0.1 Hz to 40 kHz bandwidth Single-ended and differential inputs >40 dB isolation (DC to 500 MHz) Powered by SRS lock-ins Single-ended/differential inputs The SR554 is a low-noise, transformer-coupled preamplifier optimized for source impedances between 0.05 Ω and 1 kΩ. With an input noise of only 0.1 nV/√Hz , the SR554 can be used in a wide range of low-noise applications. It is the ideal preamplifier for low-temperature synchronous detection applications where isolation between the experimental sample and the lock-in amplifier is critical. Signal Recovery with PMTs SR865A Lock-In Amplifier SR830 Lock-In Amplifier SR2124 Lock-In Amplifier SR860 Lock-In Amplifier Signal Recovery — PMTs SR865A Lock-In Amp. SR830 Lock-In Amp. SR2124 Lock-In Amp. SR860 Lock-In Amp. SR554 Transformer Preamplifier The SR554 can operate in one of two modes. In the "bypassed" mode, the instrument is simply a passive transformer with a turns ratio of 100, providing an overall voltage gain of 100. In the "non-bypassed" mode, an additional amplifier with a gain of 5 is added increasing the gain to 500 and providing a low-impedance (<1 Ω) output. In the bypassed mode, the SR554 requires no external power. When using the output amplifier, ±20 VDC must be supplied. The preamplifier connector on SRS lock-ins can be used to power the SR554. Noise Figure Contours X Noise Figure Contours SR554 Transformer Preamplifier Noise Figure Contours Amplitude vs. Source Resistance & Frequency X Amplitude vs. Source Resistance & Frequency SR554 Transformer Preamplifier Amplitude vs. Source Resistance & Frequency SR554 Specifications Single-ended or differential 0.05 Ω to 1 kΩ (recommended) Primary can float to ±100 VDC 100× (Transformer only) 500× (Transformer and buffer) Max frequency response >40 dB, DC to 500 MHz 100 Vpp (Transformer only) 20 Vpp (Transformer and buffer) >5 kΩ (Transformer only) <1 Ω (Transformer and buffer) Dimensions and weight 3.75" × 3.0" × 7.5" (WHL), 4 lbs. Supplied by SRS lock-ins. Ext. ±20 VDC supplies can also power the SR554. One year parts and labor on defects in materials and workmanship
规格
| 技术参数 | Transformer-coupled input |
|---|---|
| 技术参数 | 0.1 nV/√Hz input noise |
| 技术参数 | Single-ended and differential inputs |
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