Product Summary

The AD604ARZ-RL is an ultralow noise, very accurate, dual-channel, linear-in-dB variable gain amplifier (VGA) optimized for time-based variable gain control in ultrasound applications; however, the AD604ARZ-RL supports any application requiring low noise, wide bandwidth, variable gain control. Each channel of the AD604ARZ-RL provides a 300 kΩ input resistance and unipolar gain control for ease of use. User-determined gain ranges, gain scaling (dB/V), and dc level shifting of output further optimize performance. The applications of the AD604ARZ-RL include Ultrasound and sonar time-gain controls, High performance AGC systems and Signal measurement.

Parametrics

AD604ARZ-RL absolute maximum ratings: (1)Supply Voltage ±VS, Pin 17 to Pin 20 (with Pin 16, Pin 22 = 0 V): ±6.5 V; (2)Input Voltages, Pin 1, Pin 2, Pin 11, Pin 12: VPOS/2 ± 2 V ; (3)continuous; (4)Pin 4, Pin 9: ±2 V; (5)Pin 5, Pin 8: VPOS, VNEG; (6)Pin 6, Pin 7, Pin 13, Pin 14, Pin 23, Pin 24: VPOS, 0 V; (7)Internal Power Dissipation: 2.2 W; (8)Operating Temperature Range: -40 to +85℃; (9)Storage Temperature Range: -65 to +150℃; (10)Lead Temperature, Soldering 60 sec: 300℃; (11)θJA: 105℃/W ; (12)θJC: 35℃/W.

Features

AD604ARZ-RL features: (1)Ultralow input noise at maximum gain 0.80 nV/Hz, 3.0 pA/Hz; (2)2 independent linear-in-dB channels; (3)Absolute gain range per channel programmable: 0 dB to 48 dB (preamplifier gain = 14 dB) through 6 dB to 54 dB (preamplifier gain = 20 dB); (4)±1.0 dB gain accuracy; (5)Bandwidth: 40 MHz (±3 dB); (6)Input resistance: 300 kΩ; (7)Variable gain scaling: 20 dB/V through 40 dB/V; (8)Stable gain with temperature and supply variations; (9)Single-ended unipolar gain control; (10)Power shutdown at lower end of gain control; (11)Drive ADCs directly.

Diagrams

AD604ARZ-RL functional block diagram

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