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MP7643, MP7643AN, MP7645AD

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Info of MP7643
Info of MP7643AN
Info of MP7645AD

MP7643, MP7643AN, MP7645AD Selling Leads, Datasheet

MFG:MP Package Cooled:SMD D/C:08+

MP7643, MP7643AN, MP7645AD Datasheet download

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Part Number: MP7643

MFG: MP

Package Cooled: SMD

D/C: 08+

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MP7643 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.

An open loop architecture (patent pending) provides wide small signal bandwidth from VREF to output up to 15 MHz (typ), fast output settling time of 150 ns, and excellent VREF feedthrough isolation. The negative feedback terminal of the output op amp is available for user gain control. In addition, low distortion in the order of 0.25% with a 1 V p-p, 1 MHz signal is achieved.

The combination of a constant input Z and the ability to vary VREFN within VCC 1.8 V to VEE +1.5 V allows flexibility for optimum system design.

The MP7643 is fabricated on a junction isolated, high speed BiCMOS (BiCMOS IVTM) process with thin film resistors. This process enables precision high speed analog/digital (mixedmode) circuits to be fabricated on the same chip.

MP7643 Maximum Ratings

V_CC to V_{REFN .} . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .+6.5 V
V_EE to V_REFN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6.5 V
V_CCto DGND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +13.0 V
V_EE to DGND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6.5 V
V_REF 1-4 to DGND, V_REFN . . . . . . . . . . . . . . . . . . . V_CCto V_EE
V_OUT 1-4 to DGND, V_REFN . . . . . . . . . . . . . . . . . . .V_CC to V_EE
Digital Input & Output Voltage to DGND 0.5 to V_DD +0.5 V
Operating Temperature Range
Extended Industrial . . . . . . . . . . . . . . . . 40°C to +85°C
Maximum Junction Temperature . . . . . . ..65°C to 150°C
Storage Temperature . . . . . . . . . . . . . . . . . . . . . . . .150°C
Lead Temperature (Soldering, 10 sec) . . . . . . . . . .+300°C
Package Power Dissipation Rating @ 75°C
PDIP, SOIC, PLCC . . . . . . . . . . . . . . . . . . . . . . . . . .1050mW
Derates above 75°C . . . . . . . . . . . . . . . . . . . . . .14mW/°C
NOTES:
1 Stresses above those listed under "Absolute Maximum Ratings" may cause permanent damage to the device. This is a stress rating only and functional operation at or above this specification is not implied. Exposure to maximum rating conditions for extended periods may affect device reliability.
2 Any input pin which can see a value outside the absolute maximum ratings should be protected by Schottky diode clamps (HP5082-2835) from input pin to the supplies. All inputs have protection diodes which will protect the device from short transients outside the supplies of less than 100mA for less than 100ms.

MP7643 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 V_REF= 1 V p-p @ 1 MHz
• Latch-Up Free
• ESD Protection: 2000 V Minimum

MP7643 Typical Application

• Direct High-Frequency Automatic Gain Control
• Video AGC & CCD Level AGC
• Convergence Adjustment for High-Resolution Monitors (Workstations)
• Multiplier Replacement

MP7643 Connection Diagram

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