MPY100AG - 4-Quadrant Analog Multiplier/Divider | Texas Instruments
MPN: MPY100AG β End of Life| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $0 | $0.00 |
| 10 | $0 | $0.00 |
| 100 | $0 | $0.00 |
| 500 | $0 | $0.00 |
| 1,000 | $0 | $0.00 |
MPY100AG Overview
An analog multiplier is a linear function block whose output voltage is proportional to the product of two input voltages; the broader family of multipliers/dividers sits within the analog signal processing hierarchy, below full analog computers but above simple operational amplifier circuits. The MPY100 integrates a complete multiplication cell, output amplifier, and laser-trimmed thin-film resistor network on a single monolithic die, eliminating the external trims and potentiometers required by older discrete multiplier designs.
Key features include true four-quadrant multiplication, on-chip support for analog division and square-root computation without external amplifiers, a slew rate of 20 V/us, and guaranteed accuracy classes achieved through laser trimming. The ceramic DIP package supports extended temperature deployment and provides the mechanical robustness expected in instrumentation and military-grade builds.
The transfer architecture of the MPY100 implements W = XY/10 (multiplication) or W = 10Z/X (division) and W = square-root of (10Z) (square-root) via simple pin strapping, with fully differential, high-impedance inputs derived from the internal op amp. Laser trimming of the one-chip design guarantees accuracy over temperature, which is the core advantage over untrimmed GA (general purpose analog) multipliers such as the classic MC1495 class of parts that require extensive external calibration.
Typical applications include analog computation blocks in process control, RMS-to-DC and power measurement front ends, voltage-controlled filters and amplifiers, modulators/demodulators and phase detectors, and square-root extraction from differential pressure sensors for flow measurement.
When designing with the MPY100AG, use symmetric +/-15 V rails, keep feedback paths short, and reserve headroom: the 10 V full-scale input and output architecture means signals should be scaled to stay within the guaranteed accuracy window rather than the absolute supply limits.
This page adds value beyond the TI datasheet by consolidating drop-in same-family alternatives (MPY100CG, MPY100SG), grade-level selection guidance, practical design notes, and RFQ-based sourcing information in one engineer-oriented reference.
Drop-in alternatives for MPY100AG β same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Variants in this series
Same-series models that are drop-in compatible with MPY100AG (same form factor and footprint) β differing in Function, Package, Accuracy, Mounting Type, Design.
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MPY100CG
β Drop-Inπ Reference alternative (not in catalog)
MPY100SG
β Drop-Inπ Reference alternative (not in catalog)
MPY100AG
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View Datasheet βMPY100AG Maximum Ratings & Electrical Characteristics
| Function | Multiplier / Divider (4-quadrant) |
| Transfer Functions | Multiplication, Division, Square Root |
| Package | 14-CDIP (0.300 in, 7.62 mm) |
| Supply Voltage Range | 8.5 V to 20 V |
| Typical Supply | +/-15 V DC |
| Slew Rate | 20 V/us |
| Mounting Type | Through Hole |
| Full-Scale Transfer Constant | 10 V (W = XY/10) |
| Manufacturer | Texas Instruments (originally Burr-Brown) |
MPY100AG 14-cdip (0.300 in, 7.62 mm) Pin Configuration Guide
Pin configuration for MPY100AG (14-cdip (0.300 in, 7.62 mm) package). This analog component features input, output, and power supply pins. Refer to the manufacturer datasheet for offset null, compensation, and enable pin configurations. Ideal for signal conditioning and amplifier circuits.
No detailed pinout data available for MPY100AG.
Refer to the datasheet for full pin configuration.
Typical Applications
MPY100AG is suitable for 6 applications: Analog Computation in Process Control, Square-Root Flow Measurement (Differential Pressure), Power Measurement and RMS Computing, Modulators, Demodulators and Phase Detection, Voltage-Controlled Filters and Amplifiers, Legacy Instrumentation Repair and Sustainment.
Analog Computation in Process Control
The MPY100AG implements the mathematical core of analog process-control loops, computing products, quotients, and square roots of process variables directly in the signal domain. Its 10 V transfer constant (W = XY/10) matches the 10 V full-scale convention of industrial transmitters, and the laser-trimmed one-chip design delivers guaranteed accuracy without the potentiometer calibration of older discrete multiplier stages. Placed between a conditioned sensor channel and a controller input, the device computes the required nonlinear function with a 20 V/us slew rate, which comfortably handles the sub-kilohertz dynamics of thermal and flow processes. Because multiplication, division, and square root are all available on one IC via pin strapping, a single MPY100AG can replace an entire board of amplifiers and trimmers in legacy analog control cabinets.
Recommended
Square-Root Flow Measurement (Differential Pressure)
Flow rate derived from a differential pressure measurement follows a square-root relationship, and the MPY100AG extracts this square root in a single IC (W = square root of 10Z) without external amplifiers or potentiometers, per the TI MPY100 datasheet. A differential pressure transmitter output, scaled to 0-10 V, feeds the appropriate input; the output is then a linear representation of volumetric flow, ready for display or further analog computation. The device's grade-level laser-trimmed accuracy bounds the linearization error, while the +/-15 V supply, standard in process instrumentation cabinets, powers it directly. Because the computation is fully analog, response is immediate and free of converter latency - an advantage in legacy plants where the entire safety and control chain remains analog. Ceramic DIP packaging also tolerates the wide ambient temperature swings of field-mounted cabinets.
Recommended
Power Measurement and RMS Computing
True power is the product of instantaneous voltage and current, and the MPY100AG's four-quadrant multiplication capability makes it a natural core for analog power meters. A voltage-proportional signal and a current-proportional signal (from a shunt or current transformer with burden resistor) are applied to the X and Y inputs; the output W = XY/10 is proportional to real power including polarity, since multiplication is valid in all four quadrants. Averaging the output with a precision low-pass filter yields the DC mean power value. The 20 V/us slew rate and datasheet-guaranteed bandwidth handle line-frequency and harmonics-rich waveforms, and the symmetric +/-15 V rails accept bipolar AC signals directly. Legacy energy-management and test instruments use exactly this topology, and the MPY100AG maintains those instruments' calibration heritage.
Recommended
Modulators, Demodulators and Phase Detection
Four-quadrant multiplication is the classical topology for balanced modulators, synchronous demodulators, and phase detectors. Feeding a carrier to the X input and a modulating signal to the Y input produces a double-sideband suppressed-carrier output (W = XY/10); multiplying the received signal by a local oscillator with the same frequency extracts the baseband component in a lock-in or coherent-detection scheme, and the DC component of the product is proportional to the cosine of the phase difference, enabling phase detection. The MPY100AG integrates this function on one laser-trimmed die with a 20 V/us slew rate, adequate for audio-band and low-IF carrier systems up to roughly hundreds of kilohertz. Its through-hole ceramic DIP package suits the repair and manufacture of legacy instrumentation such as impedance analyzers and synchronous amplifiers.
Recommended
Voltage-Controlled Filters and Amplifiers
A multiplier used as a voltage-controlled gain element turns an ordinary amplifier into an electronically controlled one: applying the audio or sensor signal to X and a DC control voltage to Y scales the output as W = XY/10, giving a gain linearly proportional to the control voltage with full sign preservation for bipolar signals. Combined with state-variable active filter topologies, the same multiplication principle shifts corner frequencies electrically, forming voltage-controlled filters for test equipment, synthesizers, and adaptive analog systems. The MPY100AG's laser-trimmed accuracy means control-law linearity is guaranteed rather than trim-dependent, and the +/-15 V rails accept +/-10 V signal swings directly. The 20 V/us slew rate supports wideband audio and instrumentation signal paths without slew-induced distortion in normal operating bands.
Recommended
Legacy Instrumentation Repair and Sustainment
A large installed base of Burr-Brown-era test, measurement, and industrial instruments specifies the MPY100 in 14-CDIP, and the MPY100AG is the sustainment part for those boards. Its identical die-level function set and through-hole ceramic package allow direct replacement without PCB modification, preserving the instrument's original calibration philosophy. For repair shops and maintainers of analog computers, arbitrary function generators, and laboratory instrumentation from the 1980s-1990s, keeping a stock of MPY100AG or its grade variants (MPY100CG, MPY100SG) avoids full board redesign. Because the part is discontinued, sourcing through legacy distributors under RFQ is normal practice; lot-to-lot grade verification against the datasheet accuracy table is recommended when substituting between grades within the same socket.
Recommended
Recommended Products Summary
Engineering reference data for MPY100AG β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | MPY100CG | MPY100SG | MPY100AG (B-grade variant) |
|---|---|---|---|---|
| Package | 14-CDIP (0.300 in, 7.62 mm) | CDIP-SB-14 (same footprint) | 14-CDIP (same footprint) | 14-CDIP (same footprint) |
| Brand | Texas Instruments (Burr-Brown) | Texas Instruments | Texas Instruments | Texas Instruments |
| Function | 4-quadrant multiplier/divider, square root | 4-quadrant multiplier/divider, square root | 4-quadrant multiplier/divider, square root | 4-quadrant multiplier/divider, square root |
| Supply Voltage Range | 8.5 V to 20 V | 8.5 V to 20 V | 8.5 V to 20 V | 8.5 V to 20 V |
| Slew Rate | 20 V/us | 20 V/us | 20 V/us | 20 V/us |
| Transfer Constant | 10 V (W = XY/10) | 10 V (W = XY/10) | 10 V (W = XY/10) | 10 V (W = XY/10) |
| Guaranteed Accuracy Grade | A grade (laser trimmed) | C grade (tighter accuracy class) | S grade (per datasheet grade table) | B grade (tighter than A) |
| Lifecycle Status | EOL (legacy stock) | EOL (legacy stock) | EOL (legacy stock) | EOL (legacy stock) |
Key Differentiators
- Complete multiplier, divider and square-root function on one die (vs MPY100CG)
- Ceramic 14-pin DIP through-hole packaging (vs AD632 (functional alternative))
- Laser-trimmed one-chip design with guaranteed accuracy (vs MPY100SG)
Design Notes
Operate the MPY100AG from symmetric dual rails within the 8.5 V to 20 V per-rail range specified in the TI datasheet, with +/-15 V DC as the condition under which specifications are characterized (datasheet specs are quoted at TA = +25 C and +/-15 V DC). Decouple both supplies with 0.1 uF ceramics placed directly at the supply pins plus a 10 uF bulk capacitor per rail. Asymmetric rails shift the multiplier's internal scaling and degrade the guaranteed transfer accuracy, so avoid single-supply operation entirely.
The 10 V transfer constant means the guaranteed accuracy window covers +/-10 V on the input and output, not the full supply range. Signals approaching the rails are outside the laser-trimmed accuracy region. Scale transducer outputs so nominal signals occupy roughly 10-90% of the +/-10 V span. Also note the transfer direction for division: W = 10Z/X becomes unstable as X approaches zero - add a minimum-magnitude clamp or comparator interlock on the divisor input to prevent output latch-up.
As a 14-CDIP through-hole part, keep the multiplier's input traces short and return all analog ground connections to a single star point to avoid ground-loop errors that the laser-trimmed accuracy cannot compensate. If a socket is used for maintainability of this discontinued part, choose a low-profile machined-pin socket and re-verify accuracy after installation, since socket contact resistance in the summing nodes adds offset. Keep the output amplifier feedback loop compact to preserve the 20 V/us slew-rate behavior.
Compliance Information
Legacy Burr-Brown part predating modern compliance declarations; compliance status not stated in the retrieved data. Request lot-specific compliance certificates from the seller.
