CMOS Readout System for a Double-sided Germanium Strip Detector
NAVAL RESEARCH LAB WASHINGTON DC
Pagination or Media Count:
A wide variety of applications require a hard X-ray or gamma ray detector which combine both good spatial resolution and energy resolution. Double-sided solid-state strip detectors provide this capability. We report on the development of CMOS electronics designed for photon detection with strip detectors. These electronics include a low noise preamplifier, semi-gaussian shaping amplifier, discriminator, and peak detection circuitry. All circuits are designed to operate at low power. Circuits have been duplicated in both NMOS and PMOS to provide both polarities of signals. We have constructed an 8x8 channel system to test these prototype chips. Power consumption for the preamplifier through peak-detector circuit is 4 mWchannel. The test system has a conversion gain of 35 mVfC, system noise equivalent noise charge of ENC220 e rms 0 pF, and a dynamic range of 1001 in both NMOS and PMOS circuits.
- Electrical and Electronic Equipment
- Test Facilities, Equipment and Methods
- Nuclear Physics and Elementary Particle Physics
- Solid State Physics