MPY100SM - Precision Analog Multiplier/Divider | Texas Instruments
MPN: MPY100SM ✗ End of Life| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $24.5 | $24.50 |
| 10 | $22.8 | $228.00 |
| 100 | $20.9 | $2,090.00 |
| 500 | $19.2 | $9,600.00 |
| 1,000 | $17.6 | $17,600.00 |
MPY100SM Overview
An analog multiplier is a device whose output voltage is proportional to the product of two input voltages. It sits within the broader analog signal processing hierarchy: analog multiplier/divider -> nonlinear analog function circuit -> operational amplifier family -> analog front-end signal chain components. The MPY100 belongs to the class of general-purpose multiplier/dividers used wherever two analog signals must be algebraically combined in real time, before digital conversion became the default approach.
Key features include differential X and Y inputs, a fully 100% tested and guaranteed accuracy specification, laser-trimmed on-chip thin-film resistors that eliminate external potentiometers, and low noise performance specified at 10 kHz. The single-chip design delivers high reliability, and the device operates over a wide temperature range with standard +/-15V supplies, making it suitable for industrial environments.
Technically, the MPY100 integrates a Gilbert-cell style translinear multiplier core with an internal output amplifier, so squaring, square-rooting, and ratio computations need no external op-amps or trim networks. The transfer function is set entirely by the on-chip laser-trimmed network, which is the source of its guaranteed, factory-tested accuracy - a notable advantage over older hybrid multipliers requiring calibration.
Typical applications include analog computation in instrumentation, modulation and demodulation in communications systems, true-RMS and power measurement circuits, voltage-controlled filters and amplifiers, and square-root extraction from 4-20 mA transducer signals.
Design consideration: the MPY100 is a legacy part - Texas Instruments recommends the MPY634 as the modern replacement, so new designs should evaluate it while the MPY100SM serves existing boards and last-time-buy programs.
This page synthesizes distributor availability data, drop-in family alternatives, and practical design notes not found in the manufacturer datasheet.
Drop-in alternatives for MPY100SM — 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 MPY100SM (same form factor and footprint) — differing in Function, Package, Accuracy, Mounting Type, Design.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
MPY100AG
✅ Drop-In ⚠️ 参数待验证✓ In Stock
Contact for price
View Datasheet →MPY100BM
✅ Drop-In ⚠️ 参数待验证✓ In Stock
$14.7 / Unit
View Datasheet →MPY100AM
✅ Drop-In ⚠️ 参数待验证✓ In Stock
$8.25 / Unit
View Datasheet →MPY100SM Maximum Ratings & Electrical Characteristics
| Function | Analog multiplier/divider (four-quadrant) |
| Operations Supported | Multiplication, division, square root |
| Input Type | Differential (X and Y inputs) |
| Accuracy | 100% tested and guaranteed at factory |
| External Trimming Required | No (laser-trimmed on-chip) |
| Noise Specification Reference | Specified at 10 kHz |
| Package | TO-100 metal can, 10-pin |
| Supply Voltage | +/-15 V (typical per datasheet family) |
| Operating Temperature Range | Wide temperature operation (grade-specific range per datasheet) |
| Mounting Type | Through-hole |
| RoHS Status | unknown |
| Manufacturer Status | Replaced by MPY634 (per distributor data) |
MPY100SM to-100 metal can, 10-pin Pin Configuration Guide
Pin configuration for MPY100SM (to-100 metal can, 10-pin 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 MPY100SM.
Refer to the datasheet for full pin configuration.
Typical Applications
MPY100SM is suitable for 6 applications: Analog Computation in Industrial Instrumentation, Modulation and Demodulation Circuits, True-RMS and Power Measurement, Voltage-Controlled Amplifiers and Filters, Square-Root Extraction for 4-20 mA Transducer Signals, Legacy Test and Measurement Equipment Maintenance.
Analog Computation in Industrial Instrumentation
The MPY100SM fits industrial instrumentation requiring real-time algebraic computation of analog signals before digitization. Its four-quadrant multiplication with 100% factory-tested accuracy and laser-trimmed, trimmer-free design removes calibration labor from production test, a decisive benefit in high-volume instrument builds. Used in analog computer front ends and ratiometric measurement circuits, the differential X/Y inputs reject common-mode noise on long industrial signal lines, and the +/-15V supply domain matches legacy industrial rails directly.
Recommended
Modulation and Demodulation Circuits
As a four-quadrant multiplier with low noise specified at 10 kHz, the MPY100SM serves as a balanced modulator or synchronous demodulator in communications and lock-in-style measurement hardware. Applying the carrier to the X input and the signal to the Y input produces a DSB output whose amplitude follows the instantaneous product; in receive paths, mixing the signal with a coherent reference performs phase-sensitive detection. The TO-100 hermetic metal can provides superior long-term stability versus plastic DIP in humid environments.
Recommended
True-RMS and Power Measurement
The MPY100SM performs the squaring operation central to analog true-RMS conversion, and its division capability computes P = V x I directly for analog power meters. Its guaranteed, factory-tested transfer accuracy is critical here because multiplier error enters the RMS result squared, amplifying percentage errors. In AC power monitoring for industrial equipment, the multiplier output feeds an averaging filter and buffer; the absence of external trim potentiometers eliminates the dominant long-term drift source in older discrete designs.
Recommended
Voltage-Controlled Amplifiers and Filters
Using the MPY100SM as the gain element creates voltage-controlled amplifiers and state-variable filters: the multiplier output equals input times a control voltage, giving linear-in-volts gain control instead of the exponential law of OTA-based VCAs. This suits test equipment and audio-range control systems needing predictable calibration. The differential inputs allow the control signal to be referenced independently, and the low noise floor at 10 kHz keeps the control feed-through below the signal noise in typical band-limited designs.
Recommended
Square-Root Extraction for 4-20 mA Transducer Signals
Differential-pressure flow transducers produce a signal proportional to flow squared; the MPY100SM configured in its datasheet square-root mode linearizes this to a flow-proportional voltage without microcontrollers or lookup tables. Its division capability further supports pressure/temperature compensation ratios in the same analog chain. The laser-trimmed accuracy ensures the linearization error stays within the transducer's own tolerance, and the hermetic TO-100 package withstands the temperature swings typical of field-mounted signal conditioners.
Recommended
Legacy Test and Measurement Equipment Maintenance
For service organizations maintaining 1980s-1990s bench instruments, curve tracers, and analog computers, the MPY100SM is often the exact specified component and the only acceptable repair fit. Because the TO-100 footprint and transfer function are unique to the MPY100 family, swapping in a different architecture would require recalibration of the entire instrument. Keeping MPY100 family stock (MPY100AG, MPY100AM, MPY100BM) enables like-for-like repairs that preserve the instrument's original factory accuracy specifications.
Recommended
Recommended Products Summary
Engineering reference data for MPY100SM — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | MPY100AG | MPY100BM | MPY100AM |
|---|---|---|---|---|
| Package | TO-100 metal can, 10-pin | TO-100 metal can, 10-pin - same | TO-100 metal can, 10-pin - same | TO-100 metal can, 10-pin - same |
| Brand | Texas Instruments (Burr-Brown legacy) | Texas Instruments | Texas Instruments | Texas Instruments |
| Function | Four-quadrant multiplier/divider + square root | Identical transfer function | Identical transfer function | Identical transfer function |
| External Trimming | Not required (laser trimmed) | Not required | Not required | Not required |
| Lifecycle Status | EOL (replaced by MPY634) | EOL (replaced by MPY634) | EOL (replaced by MPY634) | EOL (replaced by MPY634) |
| Input Type | Differential X and Y | Differential X and Y | Differential X and Y | Differential X and Y |
| Recommended Modern Replacement | MPY634 (different package) | MPY634 (different package) | MPY634 (different package) | MPY634 (different package) |
Key Differentiators
- True drop-in family availability (vs MPY100AG)
- Zero-external-trim precision (vs Discrete Gilbert-cell multiplier designs)
- Honest limitation: no modern pin-compatible successor (vs MPY634)
Design Notes
Power the MPY100SM from regulated +/-15V rails and decouple each supply pin with 0.1uF ceramic capacitors placed within a few millimeters of the pins, plus 10uF bulk capacitance per rail. Multiplier accuracy is directly sensitive to supply-induced offsets, so rail ripple and drift appear as scale-factor error in the transfer function. Avoid sharing supply traces with switching loads; if the system uses a switching pre-regulator, add an RC or ferrite filter stage before the multiplier supply pins.
Keep X and Y input traces short, matched in length where possible, and routed away from digital or clock lines to prevent crosstalk appearing as feed-through in the multiplication result. Use a solid analog ground plane; the TO-100 metal can should be connected per the datasheet pin assignment to the specified potential to act as an electrostatic shield. Because the part is through-hole, socket it in precision-machined sockets in serviceable equipment, but note sockets add contact resistance that can affect low-level accuracy.
The most common failure mode with this legacy device is assuming availability: the MPY100 is EOL and replaced by the MPY634, which has a completely different package and pinout - do not order the MPY634 expecting a drop-in. Also confirm the suffix grade (SM vs AG/BM/AM) against the instrument's calibration sheet before substitution, since accuracy grade differences change the guaranteed error limits. Finally, metal-can parts from brokers should be date-code and marking verified, as counterfeits of legacy TO-100 devices circulate widely.
Compliance Information
No compliance declarations found in the verified web data for this legacy TO-100 device; request a material declaration from TI or the distributor.
