Exar Corporation MP7643
The MP7643 is ideal for digital gain control of high frequency analog signals such as video, composite video and CCD. The device includes 4-channels of high speed, wide bandwidth, two quadrant multiplying, 8-bit accurate digital-to-analog converter. It includes an output drive buffer per channel capable of driving a +1mA (typ) load.FEATURES
●●
●
● VREF to VOUT Settling Time: 150ns to 8-bit (typ) – Voltage Reference Input Bandwidth: 15 MHz Very Low Noise Gain Control Low Power: 80mW Low AC Voltage Reference Feedthrough Excellent Channel-to-Channel Isolation – e e h U 4 t m o .c MP7643 4-Channel, Programmable Gain Voltage Output, 15 MHz Input Bandwidth 8-Bit DACs with Multiplying Parallel Digital Data Port
● DNL = +0.5 LSB, INL = +1 LSB (typ)
● DACs Matched to +0.5% (typ)
● Low Harmonic Distortion: 0.25% typical with VREF = 1 V p-p @ 1 MHz
● Latch-Up Free
● ESD Protection: 2000 V Minimum
APPLICATIONS
● Direct High-Frequency Automatic Gain Control● Video AGC & CCD Level AGC
● Convergence Adjustment for High-Resolution Monitors (Workstations)
● Multiplier Replacement
GENERAL DESCRIPTION
DNL of better than +0.5 LSB is achieved with a channel-to-channel matching of typically 0.5%. Stability, matching, and precision of the DACs are achieved by using MPS’ thin film technology. Excellent channel-to-channel isolation is also achieved with MPS’ BiCMOS process which cannot be achieved using a typical CMOS technology.