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Monolithic Power Systems Inc. MP8101DJ-LF-Z
- Part No.:
- MP8101DJ-LF-Z
- Manufacturer:
- Monolithic Power Systems Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- SOT-23-5 Thin, TSOT-23-5
- Datasheet:
-
MP8101DJ-LF-Z.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT TSOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:2,617
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Product details
Overview
MP8101DJ-LF-Z from Monolithic Power Systems is a rail-to-rail output, ultra-low-power operational amplifier in TSOT-23-5 package, delivering 400kHz gain-bandwidth product, 11µA supply current, and 1.8V to 5.5V single-supply operation. It serves as a precision signal conditioning amplifier in battery-powered portable electronics requiring minimal quiescent power and ground-sensing capability.
For engineers reviewing the MP8101DJ-LF-Z datasheet, MP8101DJ-LF-Z pinout, MP8101DJ-LF-Z application, or MP8101DJ-LF-Z equivalent, key selection criteria include rail-to-rail output swing (V– +19mV / V+ –23mV), input common-mode range extending to ground, 2pA input bias current, and capacitive load drive capability up to 1000pF.
Technical Context
The MP8101DJ-LF-Z employs a CMOS input stage enabling 2pA input bias current and rail-to-rail input common-mode range down to ground. Its unity-gain stable architecture supports direct use in buffer, comparator hysteresis, and sensor interface configurations without external compensation.
It achieves 400kHz gain-bandwidth with only 11µA supply current by optimizing transconductance and output stage efficiency-enabling continuous operation in energy-constrained systems where thermal dissipation and battery life are critical.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 1.8V to 5.5V single supply - enables direct integration with Li-ion, coin-cell, and low-voltage MCU I/O domains |
| Gain-Bandwidth Product | 400kHz - supports DC-coupled sensor amplification and low-frequency filtering up to ~300kHz |
| Supply Current | 11µA typical - extends battery life in always-on wearable or remote sensor nodes |
| Input Bias Current | 2pA - minimizes voltage error in high-impedance pH, thermistor, or photodiode front-ends |
| Output Swing | V– +19mV / V+ –23mV into 10kΩ - delivers full dynamic range across 1.8V rails for ADC input buffering |
| Capacitive Load Drive | Up to 1000pF - allows direct connection to long PCB traces or EMI-filtered inputs without instability |
| Input Common-Mode Range | 0V to V+ –1.2V - supports ground-referenced single-ended sensors without level-shifting circuitry |
Pinout & Package
TSOT-23-5 package: 2.9mm × 1.6mm × 1.1mm body, 0.95mm pitch, exposed pad optional per manufacturer layout guidance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUT | Rail-to-rail output capable of sourcing/sinking 20mA - drives ADC reference buffers or LED bias networks |
| 2 | V+ | Positive supply terminal - requires local 0.1µF + 10µF bypassing for noise-sensitive analog paths |
| 3 | IN+ | Non-inverting input with 2pA bias current - interfaces directly with high-Z resistive sensors |
| 4 | IN− | Inverting input with matched 2pA bias current - enables precision differential sensing with <5mV offset |
| 5 | V− | Ground or negative supply return - must be low-impedance path to minimize PSRR degradation |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail output swing | Delivers >98% of 1.8V supply range to downstream ADCs or comparators without headroom loss |
| Input common-mode to ground | Enables direct connection of single-ended 0V-referenced sources (e.g., thermistors, potentiometers) |
| Unity-gain stability | Operates reliably as voltage follower without external compensation components or phase margin tuning |
| Low input offset drift | 15µV/°C - maintains <0.1% gain error over –40°C to +85°C in temperature-variable sensor chains |
| High PSRR (80dB) | Rejects supply ripple from noisy DC-DC converters, preserving signal integrity in mixed-signal SoC environments |
Applications
| Wearable Heart Rate Monitor | Smart Meter Sensor Interface |
|---|---|
Use Scenario: Amplifying weak photoplethysmography (PPG) signals from green LEDs on wrist-worn devices. IC Role / Device Role / Timing Role: Low-noise, low-power transimpedance amplifier front-end with ground-sensing capability. Use Value: 2pA input bias current prevents signal corruption from high-impedance photodiode leakage; 11µA quiescent current extends battery life beyond 7 days. | Use Scenario: Conditioning resistive bridge outputs (e.g., pressure, flow, temperature) in utility-grade smart meters. IC Role / Device Role / Timing Role: Precision instrumentation amplifier gain stage with rail-to-rail output driving 16-bit SAR ADC inputs. Use Value: Input common-mode range to ground eliminates need for bias resistors; 400kHz bandwidth supports fast calibration sweeps. |
| Portable Gas Detector | Wireless Remote Sensor Node |
Use Scenario: Amplifying electrochemical cell outputs in handheld CO or VOC detectors. IC Role / Device Role / Timing Role: Ultra-low-power signal conditioner interfacing with µA-level current sources. Use Value: 1.8V minimum supply enables direct use with single alkaline or Li-SOCl₂ cells; 1000pF load drive accommodates EMI filter caps. | Use Scenario: Signal conditioning for battery voltage monitoring and ambient light sensing in LoRaWAN end-nodes. IC Role / Device Role / Timing Role: Dual-purpose op amp used for both battery divider scaling and ambient light ADC buffering. Use Value: Single 11µA device replaces two higher-power amps, reducing BOM count and PCB area in space-constrained modules. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ultra-low-power op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MP8104DJ-LF-Z | Successor part: 1.2µA supply current, 150kHz GBW, same TSOT-23-5 package and pinout | Lower power but reduced bandwidth - suitable for sub-100kHz sensor readout only | Select when >5× lower IQ outweighs bandwidth requirement |
| TLV8541IDBVR | TI part: 500nA IQ, 10kHz GBW, rail-to-rail I/O, SOT-23-5 | Ultra-deep sleep mode compatible - ideal for wake-on-event architectures | Choose for intermittent sampling systems where average power dominates peak performance |
Compared with MP8101DJ-LF-Z, MP8104DJ-LF-Z trades bandwidth for 9× lower quiescent current, while TLV8541IDBVR offers 22× lower IQ at the cost of 40× less bandwidth-making MP8101 the optimal balance for continuous 300kHz-capable signal chains.
Availability
MP8101DJ-LF-Z is available at Aetrix Electronics and suitable for portable medical devices, smart metering systems, and wireless sensor nodes requiring stable component supply with guaranteed long-term availability and RoHS-compliant packaging.
Supply support for MP8101DJ-LF-Z includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Monolithic Power Systems (MPS) is a fabless semiconductor company specializing in high-performance analog and power ICs, with design centers in the US, China, and Taiwan.
The MP81xx series targets ultra-low-power signal conditioning in battery-operated equipment, emphasizing ground-sensing, rail-to-rail output, and minimal supply current without sacrificing stability or capacitive drive capability.
FAQ
Is MP8101DJ-LF-Z pin-compatible with MP8104DJ-LF-Z?
Yes, MP8101DJ-LF-Z and MP8104DJ-LF-Z share identical TSOT-23-5 pinout and footprint. Both use pins 1–5 for OUT, V+, IN+, IN−, and V− respectively, enabling drop-in replacement in existing layouts where bandwidth requirements permit.
What is the maximum capacitive load the MP8101DJ-LF-Z can drive stably?
The MP8101DJ-LF-Z is characterized to drive up to 1000pF capacitive loads without oscillation or phase margin degradation. This specification is verified under unity-gain configuration with 10kΩ series resistance, supporting direct connection to EMI filters or long PCB traces.
Does MP8101DJ-LF-Z support dual-supply operation?
No, MP8101DJ-LF-Z is specified for single-supply operation from 1.8V to 5.5V. Its input common-mode range extends to ground but not below, and it lacks symmetric rail specifications-making it unsuitable for classic ±2.5V or ±5V dual-rail topologies.
How does the 2pA input bias current impact high-impedance sensor interfaces?
A 2pA input bias current introduces <1mV error across 1MΩ source impedance, making MP8101DJ-LF-Z suitable for thermistor, RTD, and photodiode circuits where traditional op amps with nA-level bias would cause significant offset drift or nonlinearity.
Why is MP8101DJ-LF-Z marked "Not Recommended for New Designs"?
MPS designates MP8101DJ-LF-Z as "Not Recommended for New Designs" because MP8104DJ-LF-Z offers superior power efficiency (1.2µA vs. 11µA) with identical package and pinout. However, MP8101 remains fully supported and available for legacy designs and applications needing its 400kHz bandwidth.
Can MP8101DJ-LF-Z operate from a 1.8V lithium coin cell?
Yes, MP8101DJ-LF-Z is fully specified down to 1.8V supply and draws only 11µA, making it compatible with CR2032 and BR2032 coin cells. Its rail-to-rail output ensures usable dynamic range even as battery voltage declines to 1.9V during discharge.
What thermal derating applies to MP8101DJ-LF-Z in TSOT-23-5 package?
With θJA = 220°C/W, MP8101DJ-LF-Z dissipates ≤110µW at 11µA and 5V, resulting in <25°C junction rise above ambient in still air. No heatsinking is required, but layout should maintain ≥1cm² 1oz copper pour under the exposed pad (if used) for optimal thermal performance.
MP8101DJ-LF-Z Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Monolithic Power Systems Inc.
- Series:
- -
- Package/Case:
- SOT-23-5 Thin, TSOT-23-5
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Not For New Designs
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 1
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 0.2V/µs
- Gain Bandwidth Product:
- 400 kHz
- -3db Bandwidth:
- 1 MHz
- Current - Input Bias:
- 2 pA
- Voltage - Input Offset:
- 1 mV
- Current - Supply:
- 11µA
- Current - Output / Channel:
- 20 mA
- Voltage - Supply Span (Min):
- 1.8 V
- Voltage - Supply Span (Max):
- 5.5 V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TSOT-23-5
MP8101DJ-LF-Z FAQ
1.How can I place an order for MP8101DJ-LF-Z through Aetrix?
Please submit a Request for Quotation (RFQ) for MP8101DJ-LF-Z on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for MP8101DJ-LF-Z reliable?
The price and inventory of MP8101DJ-LF-Z are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MP8101DJ-LF-Z is usually 5 days.
3.What payment methods are accepted for MP8101DJ-LF-Z?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MP8101DJ-LF-Z transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MP8101DJ-LF-Z?
MP8101DJ-LF-Z orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MP8101DJ-LF-Z order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for MP8101DJ-LF-Z?
For technical support, including MP8101DJ-LF-Z datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MP8101DJ-LF-Z requirements.
6.How does Aetrix verify that MP8101DJ-LF-Z is sourced from the original manufacturer or authorized distributors?
All MP8101DJ-LF-Z products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that MP8101DJ-LF-Z meets industry standards.
7.What is the process for return or replacement of MP8101DJ-LF-Z?
All MP8101DJ-LF-Z units undergo pre-shipment inspection (PSI). If there is an issue with MP8101DJ-LF-Z, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The MP8101DJ-LF-Z part is unused and in its original packaging.
Return procedure for MP8101DJ-LF-Z:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MP8101DJ-LF-Z Tags
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LM358DT
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MCP6006UT-E/OT
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