MP7633 View Datasheet(PDF) - Exar Corporation
Part Name
Description
Manufacturer
MP7633 Datasheet PDF : 12 Pages
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MP7633
15 V CMOS
10-Bit Multiplying
Digital-to-Analog Converter
FEATURES
• Full Four-Quadrant Multiplying DAC
• Guaranteed Monotonic over Temperature
• Non-Linearity: +1/2 LSB Achieved without Trimming
• Ultra Stable: 0.2 ppm/°C Max Linearity Tempco
• 2 ppm/°C Max Gain Error Tempco
• Low Output Capacitance
• Low Sensitivity to Amplifier Offset 330 µV/mV
• Low Glitch Energy
• Low Feedthrough Error
• TTL/5 V CMOS Compatible
• Latch-Up Free
• Improved Replacement for AD7533, AD7520
• Low Cost
APPLICATIONS
• Digitally Controlled Attenuators
• Programmable Gain Amplifiers
• Function Generation
• Linear Automatic Gain Control
GENERAL DESCRIPTION
The MP7633 is pin and functionally equivalent to industry’s
standard AD7533, AD7520 and AD7530. The MP7633 is rec-
ommended when lower output capacitance is required. The
MP7633 incorporates a unique decoding technique yielding ex-
cellent accuracy and stability (0.2 ppm/°C linearity drift and 2
ppm/°C scale factor drift) over temperature and time.
The 2-3 bit decoding architecture of the MP7633 results in
low output capacitances of 52/26pF at IOUT1 and 13/45pF at
IOUT2, low sensitivity to output amplifier offset of 330 µV per mil-
livolt offset, eliminating the need for trim pots in many applica-
tions.
SIMPLIFIED BLOCK DIAGRAM
VREF
2R
2R
2R
4R
4R
4R
4R
4R
4R
RFB
4R
R
Rev. 2.00
2 to 3 Decoder
Switch Drivers & Switches
R = 10k
MSB
BIT 1
LSB
BIT 10
3 Segment D/A Converter with Termination to GND.
Logical “1” at Digital Input Steers Current to IOUT1
IOUT1
IOUT2
1
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