G.R.A.S. 26CB 1/4" CCP Standard Preamplifier with Microdot Connector

Freq range: 2.5 Hz - 200 kHz
Noise: 1.8 µV
Gain: -0.35 dB
Special feature: General purpose

Typical applications and use

  • CCP inputs (ICP ®)
  • Prepolarized microphones 
  • ½-inch precision microphones
  • High levels and high frequencies

Design

Its small ceramic thick-film substrate has a veryhigh input impedance and is shielded by a guardring to minimize the influence of stray capacitanc eand microphonic interference.The G.R.A.S. 26CB is delivered with a built-in TEDS² chip and can be programmed as a single unit with a microphone fitted.

It can be used with all prepolarized microphones, such as G.R.A.S. 40BE and 40BD 1/4" microphone and G.R.A.S. 40AE, 40AD, and 40AQ 1/2" microphones using the included G.R.A.S. GR0010 Adapter for 1/4" preamplifier and 1/2" microphone. It has an integrated Microdot output connector. The casing is made of stainless steel for maximum strength and durability.

Frequency range (±0.2 dB) with 18 pF microphone dummy Hz 2.5 to 200 k
Slew rate V/µs 20
Input impedance GΩ // pF 20 // 0.4
Output impedance Ω < 50
Output Voltage Swing, min. @ 24-28 V CCP voltage supply Vp 8
Noise (A-Weighted) max. µV 2.5
Noise (A-Weighted) typ. µV 1.8
Noise (Linear 20 Hz – 20 kHz) max. µV 6
Noise (Linear 20 Hz – 20 kHz) typ. µV 3.5
Gain dB -0.35
Power supply (Constant Current Power) mA 2 to 20 (typ. 4)
DC bias voltage, typ. V 12
Temperature range, operation °C / °F -30 to 70 / -22 to 158
Temperature range, storage °C / °F -40 to 85 / -40 to 185
Humidity range non condensing % RH 0 - 95
TEDS UTID (IEEE 1451.4) 769 v. 0.9
Connector type Microdot 10/32
CE/RoHS compliant/WEEE registered Yes / Yes, Yes
Weight g / oz 8.0 / 0.28
Conditions: 23 °C Ambient temperature, 4 mA / 24 V open loop CCP voltage, 18 pF dummy microphone, 3 m output coax-cable.