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MP7652 Datasheet(PDF) 1 Page - Exar Corporation

Part No. MP7652
Description  4-Channel Voltage Output 15 MHz, Input Bandwidth, 8-Bit Multiplying DACs with 3-Wire Serial Digital Port and Independent References
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Manufacturer  EXAR [Exar Corporation]
Direct Link  http://www.exar.com
Logo EXAR - Exar Corporation

MP7652 Datasheet(HTML) 1 Page - Exar Corporation

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MP7652
1
Rev. 1.00
4-Channel Voltage Output
15 MHz, Input Bandwidth, 8-Bit Multiplying
DACs with 3-Wire Serial Digital Port
and Independent References
FEATURES
• Independent References
• 4 Independent 2-Quadrant Multiplying 8-Bit DACs
• 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
• 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)
• Very Low Noise
• Low Harmonic Distortion: 0.25% typical with
VREF = 1 V p-p @ 1 MHz
• VREF/2 Output Preset Level
• 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)
GENERAL DESCRIPTION
The MP7652 is ideal for digital gain control of high frequency
analog signals such as video, composite video, CCD and oth-
ers.
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. Also, excellent
channel-to-channel isolation is achieved with EXAR’s BiCMOS
process which cannot be achieved using a typical CMOS tech-
nology.
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 bottom of each DAC reference string
is brought out separately for totally isolated operation. In addi-
tion, 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 and VEE +1.5 V allows flexibility for opti-
mum system design.
The MP7652 is fabricated on a junction isolated, high speed
BiCMOS (BiCMOS IVTM) process with thin film resistors. This
process enables precision high speed analog/digital (mixed-
mode) circuits to be fabricated on the same chip.
ORDERING INFORMATION
Package
Type
Temperature
Range
Part No.
Gain Error
(% FSR)
SOIC
–40 to +85
°C
MP7652AS
+0.5
+1+1.5
Plastic Dip
–40 to +85
°C
MP7652AN
+0.5
+1+1.5
INL
(LSB)
DNL
(LSB)


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