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MP7643AS Datasheet PDF - Exar Corporation

MP7643AN image

Part Name
MP7643AS

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12 Pages

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94.1 kB

MFG CO.
Exar
Exar Corporation Exar

GENERAL DESCRIPTION
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. 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.


FEATURES
• Programmable Gain
• 4 Independent 2-Quadrant Multiplying 8-Bit DACs with Output Amplifiers
• Dual Positive (+10 V and +5 V) Supplies or Dual (+5 V) Supplies Capability
• High Speed:
    – 12.5 MHz Digital Clock Rate
    – 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
• 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


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