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AD883B3

器件名称: AD883B3
功能描述: Dual, Low Noise, Wideband Variable Gain Amplifiers
文件大小: 669.88KB    共20页
生产厂商: AD
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简  介:a FEATURES Two Channels with Independent Gain Control “Linear in dB” Gain Response Two Gain Ranges: AD600: 0 dB to +40 dB AD602: –10 dB to +30 dB Accurate Absolute Gain: 0.3 dB Low Input Noise: 1.4 nV/√Hz Low Distortion: –60 dBc THD at 1 V Output High Bandwidth: DC to 35 MHz (–3 dB) Stable Group Delay: 2 ns Low Power: 125 mW (max) per Amplifier Signal Gating Function for Each Amplifier Drives High Speed A/D Converters MIL-STD-883 Compliant and DESC Versions Available APPLICATIONS Ultrasound and Sonar Time-Gain Control High Performance Audio and RF AGC Systems Signal Measurement C1HI C1LO VG Dual, Low Noise, Wideband Variable Gain Amplifiers AD600/AD602* FUNCTIONAL BLOCK DIAGRAM GAT1 SCALING REFERENCE PRECISION PASSIVE INPUT ATTENUATOR GATING INTERFACE A1OP GAIN CONTROL INTERFACE RF2 2.24k (AD600) 694 (AD602) –22.08dB –30.1dB –36.12dB –42.14dB 62.5 R – 2R LADDER NETWORK RF1 20 0dB –6.02dB –12.04dB –18.06dB A1HI 500 A1LO FIXED GAIN AMPLIFIER 41.07dB (AD600) 31.07dB (AD602) A1CM PRODUCT DESCRIPTION The AD600 and AD602 dual channel, low noise variable gain amplifiers are optimized for use in ultrasound imaging systems, but are applicable to any application requiring very precise gain, low noise and distortion, and wide bandwidth. Each independent channel provides a gain of 0 dB to +40 dB in the AD600 and –10 dB to +30 dB in the AD602. The lower gain of the AD602 results in an improved signal-to-noise ratio at the output. However, both products have the same 1.4 nV/√Hz ……
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