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SIM Series SIM910 & SIM911 ... from $1,095
SIM910 & SIM911 JFET & BJT preamplifiers
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SIM910 & SIM911 Preamplifiers
  • 4 nV/√Hz input noise (SIM910)
  • 1.8 nV/√Hz input noise (SIM911)
  • Low output noise
  • 1 MHz bandwidth
  • Selectable gain from 1 to 100
  • AC or DC coupled
  • Differential or single-ended input
  • 85 dB CMRR
  • Remote interface
The SIM910 and SIM911 are low-noise, programmable preamplifiers which are ideal for a wide range of small signal applications. The primary differences between the two models are their input impedance and input noise. The SIM911 has a bipolar junction transistor front-end, offers lower input noise, and has a 100 kΩ front-end impedance. The low bias current and 100 MΩ input impedance of the SIM910, which has a JFET front-end, make it a better choice for use with high impedance sources.
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SIM910 & SIM911 Preamplifiers

The SIM910 and SIM911 are low-noise, programmable preamplifiers which are ideal for a wide range of small signal applications. The primary differences between the two models are their input impedance and input noise. The SIM911 has a bipolar junction transistor front-end, offers lower input noise, and has a 100 kΩ front-end impedance. The low bias current and 100 MΩ input impedance of the SIM910, which has a JFET front-end, make it a better choice for use with high impedance sources.

Both modules maintain very low output noise resulting in exceptional overall noise performance—even at low gain levels. The bandwidth of these preamplifiers is independent of gain setting so waveforms do not change shape as the gain is varied. Dual parallel outputs (one front and one rear) provide flexibility in cabling.

Inputs can be configured as differential (A-B), single-ended (A), or internally grounded, and can be either AC or DC coupled. Additionally, the BNC input shields can be floated, avoiding spurious ground loops when measuring remote signals.

The digital control circuitry in the SIM910/911 is designed with a special clock-stopping architecture in which the microcontroller is turned on only when settings are being changed.  This guarantees that no digital noise can contaminate low-level analog signals. Settings may be changed from the front panel or through the remote interface. All instrument settings can also be queried via the remote interface. The module generates a status signal to alert the user of an overload condition. Both the SIM910 and SIM911 can be operated outside the SIM mainframe by powering them with their required DC voltages.

 

 

 

 

 

Phone: (408)744-9040 • Fax: (408)744-9049 • email: info@thinkSRS.comwww.thinkSRS.com

SIM910 & SIM911 Preamplifiers
Specifications
  Common SIM910 SIM911
Frequency range DC to 1 MHz
Gain 1 to 100 (1-2-5 sequence)
Gain accuracy ±0.5 % (DC to100 kHz), ±5 % (<1 MHz)
Gain stability 200 ppm/°C
Input noise (typ.)   4 nV/√Hz @ 1 kHz 1.8 nV/√Hz @ 1 kHz
Input impedance   100 MΩ // 35 pF 100 kΩ // 35 pF
Input bias current (DC coupled)   0.5 pA (typ.) 4 µA (typ.)
AC coupling frequency (-3dB)   16 mHz 0.7 Hz
Input selection A, A-B or GND
Input coupling AC or DC
Input shields Floating or ground
Maximum input ±1 V differential, ±5 V common mode
Maximum output ±10 V
Common mode rejection 85 dB @ 1 kHz
Operating temperature 0 °C to 40 °C, non-condensing
Interface Serial via SIM interface
Connectors BNC (3 front, 1 rear)
DB15 (male) SIM interface
Power Power supplied by the SIM900 Mainframe, or optionally by a user-supplied DC power supply (±15 V and +5 V)
Dimensions 1.5" × 3.6" × 7.0" (WHL)
Weight 1.5 lbs
Warranty One year parts and labor on defects in materials and workmanship
 
 
 
 
Phone: (408)744-9040 • Fax: (408)744-9049 • email: info@thinkSRS.comwww.thinkSRS.com