The AD8488 is a 128-channel, analog front end (AFE) designed for use in high performance digital X-ray systems. The analog channels consist of an integrator followed by a gain selectable single-ended to low impedance differential output. The analog channels have very low input current and can be configured with a variety of input charge ranges and gain ranges.
The AD8488 is a 128-channel analog front end (AFE) designed for use in high-performance digital X-ray systems, such as medical and security baggage scanners. Each analog channel consists of an integrator followed by a gain-selectable single-ended to low impedance differential output. The device converts charge acquired by X-ray or photodiode detectors into a voltage using CMOS transistors and selectable capacitance values.
| Number of Channels | 128 |
|---|---|
| Power Consumption (Normal) | 11 mW/channel |
| Power Consumption (Low Power) | 4 mW/channel |
| Input Leakage Current | -1.5 pA typical |
| Input Referred Noise (QNI) | 993 e−rms typical |
| Linearity Error | 0.03% typical |
| Operating Temperature | 0°C to 85°C |
| Package Type | 255-lead BGA |
| Reference Voltage | 2.048 V |
It is designed for high performance digital X-ray systems, including medical X-ray and security baggage scanner systems.
The device contains 128 integrator channels.
The typical low input leakage current is -1.5 pA.