AD9100

a FEATURES Excellent Hold Mode Distortion into 250 ⍀ –88 dB @ 30 MSPS (2.3 MHz VIN) –83 dB @ 30 MSPS (12.1 MHz VIN) –74 dB @ 30 MSPS (19.7 MHz VIN) 16 ns Acquisition Time to 0.01% <1 ps Aperture Jitter 250 MHz Tracking Bandwidth 83 dB Feedthrough Rejection @ 20 MHz 3.3 nV/√Hz Spectral Noise Density MlL-STD-Compliant Versions Available APPLICATIONS A/D Conversion Direct IF Sampling Imaging/FLIR Systems Peak Detectors Radar/EW/ECM Spectrum Analysis CCD ATE GENERAL DESCRIPTION Ultrahigh Speed Monolithic Track-and-Hold AD9100* FUNCTIONAL BLOCK DIAGRAM CLK CLK VIN 50⍀ A1 SWITCH CHOLD 22pF A2 VOUT ؎2.3V CLAMP AD9100 The AD9100 is a monolithic track-and-hold amplifier which sets a new standard for high speed and high dynamic range applications. It is fabricated in a mature high speed complementary bipolar process. In addition to innovative design topologies, a custom package is utilized to minimize parasitics and optimize dynamic performance. Acquisition time (hold to track) is 13 ns to 0.1% accuracy, and 16 ns to 0.01%. The AD9100 boasts superlative hold-mode frequency domain performance; when sampling at 30 MSPS hold mode distortion is less than 83 dBfs for analog frequencies up to 12 MHz; and –74 dBfs at 20 MHz. The AD9100 can also drive capacitive loads up to 100 pF with little degradation in acquisition time; it is therefore well suited to drive 8- and 10-bit flash converters at clock speeds to 50 MSPS. With a spectral noise density of 3.3 nV/√Hz and feedthrough reje...