AD7541_02 Datasheet, PDF (1/8 Pages) Intersil Corporation – 12-Bit, Multiplying D/A Converter

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May 2002
AD7541
FN3107.3
12-Bit, Multiplying D/A Converter
The AD7541 is a monolithic, low cost, high performance,
12-bit accurate, multiplying digital-to-analog converter
(DAC).
Intersil’ wafer level laser-trimmed thin-film resistors on
CMOS circuitry provide true 12-bit linearity with TTL/CMOS
compatible operation.
Special tabbed-resistor geometries (improving time stability),
full input protection from damage due to static discharge by
diode clamps to V+ and ground, large I_OUT1 and I_OUT2 bus
lines (improving superposition errors) are some of the
features offered by Intersil AD7541.
Features
• 12-Bit Linearity 0.01%
• Pretrimmed Gain
• Low Gain and Linearity Tempcos
• Full Temperature Range Operation
• Full Input Static Protection
• TTL/CMOS Compatible
• +5V to +15V Supply Range
• 20mW Low Power Dissipation
• Current Settling Time 1µs to 0.01% of FSR
• Four Quadrant Multiplication
Pinout
AD7541
(PDIP)
TOP VIEW
I_OUT1 1
I_OUT2 2
GND 3
BIT 1 (MSB) 4
BIT 2 5
BIT 3 6
BIT 4 7
BIT 5 8
BIT 6 9
18 R_FEEDBACK
17 V_{REF IN}
16 V+
15 BIT 12 (LSB)
14 BIT 11
13 BIT 10
12 BIT 9
11 BIT 8
10 BIT 7
Functional Block Diagram
V_{REF IN}
(17)
20kΩ
10kΩ 10kΩ
20kΩ 20kΩ
10kΩ
10kΩ
20kΩ 20kΩ
20kΩ
(3)
SPDT
NMOS
SWITCHES
MSB
(4)
BIT 2
(5)
BIT 3
(6)
I_OUT2 (2)
I_OUT1 (1)
10kΩ
R_FEEDBACK
(18)
NOTE: Switches shown for digital inputs “High”.
Part Number Information
PART NUMBER
NONLINEARITY
AD7541JN
0.02% (11-Bit)
AD7541KN
0.01% (12-Bit)
TEMP. RANGE (^oC)
PACKAGE
0 to 70
18 Ld PDIP
0 to 70
18 Ld PDIP
PKG. NO.
E18.3
E18.3
1
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
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Copyright © Intersil Americas Inc. 2002. All Rights Reserved