MP7541B

1

Rev. 2.00

FEATURES

• ESD Protection: 2000 V Minimum

• Full Four Quadrant Multiplication

• Low Glitch Energy

• 12-Bit Linearity (End-Point)

• Guaranteed Monotonic. All Grades. All Temperatures.

• TTL/5 V CMOS Compatible

• Stable, More Accurate Segmented Architecture

–

2.0 ppm/

°C Typ. Gain Error Tempco

–

0.2 ppm/

°C Max. Linearity Tempco

–

Lowest Sensitivity to Output Amplifier Offset

• Latch-Up Free

15 V CMOS

Multiplying 12-Bit

Digital-to-Analog Converter

APPLICATIONS

• Industrial Automation

• Automatic Test Equipment

• Disk Drive Servo Systems

• Digital/Synchro Conversion

• Programmable Gain Amplifiers

• Ratiometric A/D Conversion

• Function Generation

• Digitally Controlled Filters

GENERAL DESCRIPTION

The MP7541B is a pin-compatible replacement which offers

superior performance in latch-up and ESD protection versus the

comparable 7541 and 7541A. The high ESD protection will re-

duce failures caused by mishandling. These devices are manu-

factured using patented advanced thin film resistors on a double

metal CMOS process which result in ultra stable thin film and su-

perior long life reliability and stability. The MP7541B incorpo-

rates a bit decoding technique yielding lower glitch, higher

speed and excellent accuracy over temperature and time. The

MP7541B’s outstanding features are:

Stability: Both Integral Non-Linearity (INL) and Differential-

Non-Linearity (DNL) are rated at 0.2 ppm/

Monotonicity is guaranteed over the entire temperature range.

Lower Sensitivity to Output Amplifier Offset:

Multiplying

DACs provide an output current into a virtual ground of the out-

put op amp. Additional linearity error caused by the op amp is

reduced by a factor of 3 in the MP7541B versus conventional

R-2R DACs.

3-7 Decoder

80k

40k

Switch Drivers

40k

40k

GND BIT 1

BIT 2

BIT 3

BIT 4

BIT 12

(LSB)

(MSB)

10k

80k

“1”

“1”

“1”

“1”

“1”

SIMPLIFIED BLOCK DIAGRAM

“1”