Ultra Low Noise Wideband Op Amp
The CLC425 combines a wide bandwidth (1.9GHz GBW) with very
low input noise (1.05nV/√Hz, 1.6pA/√Hz) and low dc errors (100µV
VOS, 2µV/°C drift) to provide a very precise, wide dynamic-range
op amp offering closed-loop gains of ≥10.
Singularly suited for very wideband high-gain operation, the CLC425
employs a traditional voltage-feedback topology providing all the
benefits of balanced inputs, such as low offsets and drifts, as well
as a 96dB open-loop gain, a 100dB CMRR and a 95dB PSRR.
The CLC425 also offers great flexibility with its externally adjustable
supply current, allowing designers to easily choose the optimum
set of power, bandwidth, noise and distortion performance.
Operating from ±5V power supplies, the CLC425 defaults to a
15mA quiescent current, or by adding one external resistor, the
supply current can be adjusted to less than 5mA.
The CLC425's combination of ultra-low noise, wide gain-band-
width, high slew rate and low dc errors will enable applications in
areas such as medical diagnostic ultrasound, magnetic tape & disk
storage, communications and opto-electronics to achieve maximum
high-frequency signal-to-noise ratios.
The CLC425 is available in the following versions:
-40°C to +85°C
-40°C to +85°C
-55°C to +125°C
CLC425ALC -40°C to +85°C
CLC425AMC -55°C to +125°C
CLC425AJM5 -40°C to +85°C
DESC SMD number : 5962-93259.
MIL-STD-883, Level B
dice, MIL-STD-883, Level B
s 1.9GHz gain-bandwidth product
s 1.05nV/√Hz input voltage noise
s 0.8pA/√Hz @ Icc < 5mA
s 100µV input offset voltage, 2µV/°C drift
s 350V/µs slew rate
s 15mA to 5mA adjustable supply current
s Gain range ±10 to ±1,000V/V
s Evaluation boards & simulation
s 0.9dB NF @ Rs = 700Ω
s Instrumentation sense amplifiers
s Ultrasound pre-amps
s Magnetic tape & disk pre-amps
s Photo-diode transimpedance amplifiers
s Wide band active filters
s Low noise figure RF amplifiers
s Professional audio systems
s Low-noise loop filters for PLLs
Equivalent Input Voltage Noise
100 1k 10k 100k 1M 10M 100M
© 1999 National Semiconductor Corporation
Printed in the U.S.A.
DIP & SOIC
8 Rp (optional)