1
SR554 SPECIFICATIONS
Inputs
Single ended or differential
Input Impedance
0.5
Ω
Maximum Inputs
Transformer and Buffer:
14.0 mV RMS (±20 mV peak)
Transformer only:
350 mV RMS (±0.5 V peak)
Common Mode
Range:
± 100 VDC
Rejection:
140 dB @ 100 Hz
Isolation
> 40dB
DC to 500 MHz
Input Noise
120 pV/
√
Hz
@ 10 Hz (typical)
(Transformer and Buffer)
100 pV/
√
Hz
@ 100 Hz
100 pV/
√
Hz
@ 1000 Hz
(see noise contours, pg. 5)
Gain
Transformer and Buffer:
500
(nominal)
Transformer only:
100
(nominal)
See Amplitude-Frequency Response Curve (pg 6).
Gain Accuracy
5% (with fixed source resistance)
Gain Stability
100 ppm/
°
C
Outputs
Single ended or differential
Output Impedance
Transformer and Buffer:
< 1.0
Ω
Transformer only:
> 5000
Ω
Maximum Output
Transformer and Buffer:
7.1 V RMS (10 Volts peak)
Transformer only:
35.3 V RMS (50 Volts peak)
Power
Provided by any SRS lock-in amplifier via the supplied
connector cable or from a ± 20 volts DC @ 100 mA source.
Mechanical
2.9" X 3.8" X 7.5" (HxWxL), 4 lb.
Warranty
One year parts and labor on materials and workmanship.
