MPY100BM - Precision Multiplier/Divider TO-100 | Texas Instruments
MPN: MPY100BM ✗ End of Life| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $24.5 | $24.50 |
| 10 | $22.05 | $220.50 |
| 100 | $19.6 | $1,960.00 |
| 500 | $17.15 | $8,575.00 |
| 1,000 | $14.7 | $14,700.00 |
Drop-in alternatives for MPY100BM — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
MPY100AM
✅ Drop-In✓ In Stock
$8.25 / Unit
View Datasheet →MPY100AG
✅ Drop-In✓ In Stock
Contact for price
View Datasheet →MPY100BG
✅ Drop-In✓ In Stock
$11.1 / Unit
View Datasheet →MPY100BM-BS
✅ Drop-In📋 Reference alternative (not in catalog)
MPY100BM Maximum Ratings & Electrical Characteristics
| Function | Analog Multiplier / Divider / Square-Rooter |
| Configuration | Four-Quadrant Multiplier |
| Technology | Bipolar (laser trimmed) |
| Nominal Supply Voltage | 15 V |
| Minimum Supply Voltage (Vsup) | 8.5 V |
| Nominal Bandwidth | 0.55 kHz |
| Number of Terminals | 10 |
| Package | TO-100 metal can, round, through-hole |
| Surface Mount | No |
| Max Operating Temperature | 85 C |
| Temperature Grade | Other (per distributor data) |
| Accuracy | 100% tested and guaranteed (per datasheet features) |
| External Trimming | Not required |
| Noise | Low noise, specified at 10 kHz (per datasheet features) |
| Mounting Type | Through-Hole |
MPY100BM to-100 metal can, round, through-hole Pin Configuration Guide
Complete pinout information for MPY100BM (to-100 metal can, round, through-hole 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 MPY100BM.
Refer to the datasheet for full pin configuration.
Safe Operating Area (SOA) & Thermal Characteristics
No official SOA curve available for this component. Always operate within absolute maximum ratings specified in the datasheet. Ensure adequate cooling and derate as needed.
Typical Applications
MPY100BM is suitable for 6 applications: Analog Power Measurement, Industrial Instrumentation Signal Computation, RMS-to-DC Conversion Front Ends, Modulator / Demodulator Circuits, Voltage-Controlled Gain (AGC) Stages, Legacy Test Equipment Repair and Maintenance.
Analog Power Measurement
The MPY100BM's four-quadrant multiplier core directly computes instantaneous power as the product of a voltage sense signal and a current sense signal, making it a natural fit for analog power metering in industrial instrumentation. Because the die is laser trimmed and accuracy is 100% factory tested, no calibration potentiometers are needed on the production line, reducing build cost and drift. With a nominal bandwidth of 0.55 kHz and +/-15V nominal supplies, the device handles DC and line-frequency power computation; the designer should ensure the input signals stay within the datasheet transfer range and buffer the current-shunt signal with a low-offset instrumentation amplifier ahead of the X input for best accuracy.
Recommended
Industrial Instrumentation Signal Computation
In analog instrumentation racks and legacy industrial controllers, the MPY100BM provides multiply, divide, and square-root functions such as flow square-root extraction from differential pressure (DP) transmitters, ratio computation, and percent-of-span scaling. The one-chip laser-trimmed design replaces multi-op-amp discrete multiplier circuits and their trim networks, and the TO-100 metal can provides good shielding against industrial EMI when grounded. The 10-pin through-hole package suits maintenance-friendly rack cards, and the 0.55 kHz nominal bandwidth comfortably covers slow process variables. Designers should observe the 8.5V minimum supply requirement and use stable +/-15V rails for guaranteed accuracy grades over the -25C to +85C operating range.
Recommended
RMS-to-DC Conversion Front Ends
A classic MPY100 application is the analog RMS computation chain: the multiplier squares the input signal, a low-pass filter averages the square, and a second multiplier (or the same device in feedback configuration) takes the square root to produce a DC output proportional to true RMS. The MPY100BM supports both the squaring and square-rooting roles in a single package, and its laser-trimmed accuracy transfers directly into RMS accuracy. With the 0.55 kHz nominal bandwidth, this front end targets low-frequency AC measurements such as line monitoring and audio-band metering rather than RF. Pair the device with a precision integrator op-amp for the averaging filter and a stable voltage reference for output scaling.
Recommended
Modulator / Demodulator Circuits
The MPY100BM implements balanced modulators and synchronous demodulators by multiplying a carrier signal with a data or reference signal; four-quadrant operation preserves signal polarity through the multiplication, which single-quadrant multipliers cannot do. The low-noise behavior specified at 10 kHz supports clean carrier suppression in low-frequency communication and lock-in measurement systems. Given the 0.55 kHz nominal bandwidth from distributor data, this application is limited to very low carrier frequencies and chopper-style synchronous detection. Use AC coupling and center the carrier within the input common-mode range; the metal can package aids shielding in sensitive detector front ends, and no external trim networks are needed thanks to factory laser trimming.
Recommended
Voltage-Controlled Gain (AGC) Stages
By applying a control voltage to one multiplier input, the MPY100BM forms an analog voltage-controlled amplifier for automatic gain control (AGC) loops in receivers, test equipment, and audio processing chains. The transfer function gives a linear-in-control-voltage gain law, which simplifies AGC loop design compared with exponential VGA parts, and the differential inputs allow the control signal to be referenced independently. The 0.55 kHz nominal bandwidth restricts this use to baseband and control signals; the laser-trimmed core keeps gain constant across units without per-board adjustment. Designers should include the datasheet-recommended output configuration and consider offset-nulling the Z path for wide dynamic-range AGC applications.
Recommended
Legacy Test Equipment Repair and Maintenance
Because the MPY100BM is a TO-100 metal can through-hole part produced by Burr-Brown and later Texas Instruments, it appears frequently in legacy analog computation modules, curve tracers, analog computers, and vintage test instrumentation now entering the repair market. The MPY100BM remains procurable through marketplace distributors (Octopart lists 5 sources), and same-package family grades MPY100AM, MPY100AG, MPY100BG, and MPY100BM-BS provide substitution paths when exact-grade stock is exhausted. When substituting, verify the accuracy grade in the service manual, since grades differ in guaranteed error; the pinout and external configuration are unchanged across the family, keeping the repair drop-in at board level.
Recommended
Recommended Products Summary
Engineering reference data for MPY100BM — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | MPY100AM | MPY100AG | MPY100BG | MPY100BM-BS |
|---|---|---|---|---|---|
| Package | TO-100 (10-pin metal can, round, through-hole) | TO-100 (10-pin metal can) - same | TO-100 (10-pin metal can) - same | TO-100 (10-pin metal can) - same | TO-100 (10-pin metal can) - same |
| Brand | Texas Instruments (Burr-Brown) | Texas Instruments (Burr-Brown) | Texas Instruments (Burr-Brown) | Texas Instruments (Burr-Brown) | Texas Instruments (Burr-Brown) |
| Function | Four-quadrant multiplier / divider / square-rooter | Four-quadrant multiplier / divider / square-rooter | Four-quadrant multiplier / divider / square-rooter | Four-quadrant multiplier / divider / square-rooter | Four-quadrant multiplier / divider / square-rooter |
| Technology | Bipolar, laser trimmed | Bipolar, laser trimmed | Bipolar, laser trimmed | Bipolar, laser trimmed | Bipolar, laser trimmed |
| Nominal Supply Voltage | 15 V | 15 V | 15 V | 15 V | 15 V |
| Nominal Bandwidth | 0.55 kHz | [DATA_NEEDED] | [DATA_NEEDED] | [DATA_NEEDED] | [DATA_NEEDED] |
| Accuracy Grade | B grade (higher guaranteed accuracy) | A grade (lower guaranteed accuracy) | A grade (lower guaranteed accuracy) | B grade | B grade |
| Max Operating Temperature | 85 C | [DATA_NEEDED] | [DATA_NEEDED] | [DATA_NEEDED] | 85 C (min operating -25 C per Partstack) |
Key Differentiators
- B accuracy grade with higher guaranteed accuracy (vs MPY100AG)
- Factory 100% tested, trim-free operation (vs MPY100BM-BS)
- TO-100 metal can shielding (vs MPY100AG (DIP package variant))
Design Notes
Power the MPY100BM from regulated dual supplies at the nominal +/-15V condition, since the guaranteed accuracy grades are specified there and distributor data lists 8.5V as the minimum Vsup. Decouple each supply pin with 0.1uF ceramics placed close to the TO-100 pins, and add 10uF bulk capacitance per rail. The metal can should be tied to a clean analog ground to act as an EMI shield. Estimated: at +/-15V with typical quiescent current in the few-mA range, dissipation stays well under a few hundred milliwatts, so no heatsinking is required - but verify against the datasheet supply-current figure before finalizing.
The MPY100BM is a legacy EOL Burr-Brown part and Jotrin lists the MPY634 as the replacement direction, but the MPY634 is a different package and pinout - it is NOT a drop-in replacement. When buying remaining stock, watch for re-marked or pulled parts, since vintage multiplier cans are a common counterfeit target. Also note the divider configuration has a restricted input range near zero (division-by-near-zero produces large output swings), so clamp or limit the denominator input per the datasheet divider connection diagram.
The TO-100 metal can is a through-hole, round-pin package that is not directly compatible with DIP footprints; confirm your land pattern against the can's 10-pin circular arrangement before layout. Anchor the can mechanically (retain the socket or a metal clip) because through-hole multiplier cans in industrial equipment are prone to stress fractures at the pin welds under vibration. Keep the X, Y, and Z input traces short and guard them with ground to preserve the low-noise performance specified at 10 kHz, and keep the output summing-node node area compact.
With a nominal bandwidth of only 0.55 kHz per distributor parametric data, do not attempt to close high-speed feedback loops around the MPY100BM; the divider configuration in particular is prone to instability if the loop bandwidth exceeds the device bandwidth. Add the datasheet-recommended compensation capacitor in divider and square-root modes, and band-limit input signals with a simple RC filter ahead of the inputs to prevent high-frequency feedthrough from appearing at the output un-multiplied.
Compliance Information
MPY100BM is a legacy Burr-Brown-era part; the verified web data does not state RoHS/REACH or lead-free status. Through-hole metal-can parts of this generation typically predate RoHS and may contain lead in pin finish - verify with the supplier before specifying into EU-market products.
