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Monolithic Power Systems Inc. MP8102DJ-LF-Z
- Part No.:
- MP8102DJ-LF-Z
- Manufacturer:
- Monolithic Power Systems Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- SOT-23-5 Thin, TSOT-23-5
- Datasheet:
-
MP8102DJ-LF-Z.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT TSOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:4,049
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Product details
Overview
MP8102DJ-LF-Z from Monolithic Power Systems is an ultra-low-power rail-to-rail output operational amplifier in TSOT-23-5 package, delivering 600 kHz bandwidth, 7.5 µA supply current, and 1.8 V minimum supply voltage. It operates across –40°C to +85°C and drives up to 1000 pF capacitive loads-ideal for battery-powered portable instrumentation front-ends.
For engineers reviewing the MP8102DJ-LF-Z datasheet, MP8102DJ-LF-Z pinout, MP8102DJ-LF-Z application, or MP8102DJ-LF-Z equivalent, key selection criteria include quiescent current vs. bandwidth trade-off, rail-to-rail output swing at 1.8 V, input common-mode range extending to ground, and stability with capacitive loads-critical for sensor signal conditioning in space-constrained, low-voltage systems.
Technical Context
The MP8102DJ-LF-Z employs a CMOS input stage enabling 2 pA typical input bias current and input common-mode range from ground to V+ – 1.2 V. Its unity-gain stable architecture supports direct use in buffer, gain, and filtering configurations without external compensation.
It achieves 600 kHz –3 dB bandwidth with only 7.5 µA supply current by optimizing transconductance and output stage drive capability, while maintaining 82 dB CMRR and 80 dB PSRR over its 1.8 V–5.5 V supply range-enabling precision DC-coupled amplification in single-supply microcontroller interfaces.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 1.8 V to 5.5 V - enables direct interface with Li-ion battery (3.0–4.2 V) or 1.8 V/3.3 V logic rails without level shifting. |
| Quiescent Current | 7.5 µA typ - extends battery life in always-on sensor nodes; 10 µA max ensures predictable power budgeting. |
| –3 dB Bandwidth | 600 kHz - sufficient for ECG, temperature, and pressure sensor signal bandwidths while preserving low power. |
| Input Bias Current | 2 pA typ - minimizes voltage error across high-impedance sources like thermistors or pH electrodes. |
| Output Swing | V– + 19 mV / V+ – 23 mV - delivers full dynamic range at 1.8 V supply, maximizing ADC utilization in low-voltage systems. |
| Capacitive Load Drive | Up to 1000 pF - eliminates need for isolation resistors when driving ADC input filters or long PCB traces. |
| CMRR | 82 dB min - rejects common-mode noise from shared ground paths in portable equipment with mixed analog/digital sections. |
Pinout & Package
TSOT-23-5 package: 2.9 mm × 1.6 mm × 1.0 mm body, 0.95 mm pitch, exposed pad not electrically connected. Thermal resistance θJA = 220°C/W on 1"² 1 oz copper.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUT | Amplifier output node; rail-to-rail swing supports full-scale ADC input without external level-shifting circuitry. |
| 2 | V+ | Positive supply terminal; accepts 1.8–5.5 V; bypassing with 0.1 µF ceramic capacitor required for stability. |
| 3 | IN+ | Non-inverting input; CM range includes ground, enabling single-supply sensor biasing with no external reference. |
| 4 | IN– | Inverting input; matched to IN+ for <5 mV offset; high impedance avoids loading of high-Z transducer outputs. |
| 5 | V– | Ground or negative supply return; must be low-impedance path to minimize noise coupling into sensitive analog inputs. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail output | Swings within 19 mV of V– and 23 mV of V+, preserving >97% of 1.8 V full-scale range for 12-bit+ ADCs. |
| Unity-gain stable | No external compensation required-reduces BOM count and layout area in buffer, follower, and gain-of-1 filter designs. |
| Input common-mode to ground | Enables direct connection of single-ended sensors (e.g., thermocouples, RTDs) without dual supplies or bias networks. |
| Drives 1000 pF capacitive load | Stable operation into ADC input capacitance and PCB trace capacitance without series resistor isolation. |
| 1.8 V minimum supply | Operates directly from coin-cell or energy-harvesting sources, eliminating LDO overhead in ultra-low-power systems. |
Applications
| Wearable Biometric Sensor Front-End | Low-Power Gas Sensor Signal Conditioning |
|---|---|
Use Scenario: Amplifying microvolt-level signals from dry-electrode ECG or PPG sensors in smartwatches. IC Role / Device Role / Timing Role: Precision DC-coupled instrumentation amplifier stage with rail-to-rail output driving SAR ADC. Use Value: 2 pA input bias prevents electrode polarization drift; 7.5 µA IQ extends battery runtime beyond 7 days per charge. |
Use Scenario: Conditioning output of electrochemical CO or NO2 sensors with high source impedance (>100 kΩ). IC Role / Device Role / Timing Role: Transimpedance amplifier with grounded input and low-offset, low-drift signal chain. Use Value: Input common-mode to ground enables zero-bias sensor operation; 82 dB CMRR rejects switching noise from nearby MCU power domains. |
| Energy-Harvesting IoT Node Analog Front-End | Portable Medical Glucose Meter Input Stage |
Use Scenario: Amplifying nanoamp-level photocurrent from photodiode-based ambient light or UV sensors powered by solar cells. IC Role / Device Role / Timing Role: Low-noise, low-IQ transimpedance amplifier with stable 600 kHz response for fast transient detection. Use Value: 600 kHz bandwidth captures rapid light changes; 1.8 V operation matches peak harvest voltage of miniature solar cells. |
Use Scenario: Buffering and scaling analog output from glucose test strip electrochemical cell before 16-bit ADC sampling. IC Role / Device Role / Timing Role: Rail-to-rail unity-gain buffer isolating high-impedance strip output from ADC input capacitance. Use Value: Drives 1000 pF load without oscillation; 5 mV max VOS ensures <0.5% measurement error across 0–500 mg/dL range. |
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 |
|---|---|---|---|
| TLC27L2CDR | Higher 17 µA IQ, 890 kHz GBW, but 10× higher input bias (200 pA); SOIC-8 only. | Less suitable for sub-µA battery budgets; requires larger PCB area and lacks TSOT-23-5 footprint compatibility. | Select if higher bandwidth is prioritized over quiescent current and board space. |
| LPV821DBVR | Lower 650 nA IQ, but only 10 kHz bandwidth and 1.2 V min supply; same TSOT-23-5 package. | Better for multi-year coin-cell applications with DC-only signals; insufficient for AC-coupled biosignals above 1 kHz. | Select for ultra-long-life static sensing where bandwidth is secondary to power. |
Compared with TLC27L2CDR and LPV821DBVR, MP8102DJ-LF-Z uniquely balances 600 kHz bandwidth, 7.5 µA IQ, and TSOT-23-5 size-making it optimal for portable medical and industrial sensors requiring both speed and multi-day battery life.
Availability
MP8102DJ-LF-Z is available at Aetrix Electronics and suitable for wearable biometric monitors, portable gas analyzers, and energy-harvesting IoT nodes requiring stable component supply with guaranteed RoHS-compliant packaging and tape-and-reel delivery.
Supply support for MP8102DJ-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, and global manufacturing partnerships.
The MP8102 belongs to MPS's ultra-low-power precision op amp product line, engineered specifically for battery-constrained portable instrumentation where minimizing supply current without sacrificing usable bandwidth is critical.
FAQ
Is MP8102DJ-LF-Z unity-gain stable without external compensation?
Yes. The MP8102DJ-LF-Z is internally compensated for unity-gain stability across its full operating range. No external capacitors or resistors are required for stable operation in buffer, inverting, or non-inverting configurations-even when driving up to 1000 pF capacitive loads.
What is the maximum capacitive load the MP8102DJ-LF-Z can drive without oscillation?
The MP8102DJ-LF-Z is characterized to drive up to 1000 pF capacitive load while maintaining phase margin >45° and stable step response. This includes typical ADC input capacitance (10–20 pF), PCB trace capacitance (<50 pF), and external anti-aliasing filter components.
Does the MP8102DJ-LF-Z support true rail-to-rail input?
No. The MP8102DJ-LF-Z features rail-to-rail *output* and input common-mode range extending *to ground*, but the upper input common-mode limit is V+ – 1.2 V. It does not accept signals near V+-unlike full rail-to-rail input amplifiers.
Can MP8102DJ-LF-Z operate from a 1.8 V single supply with rail-to-rail output swing?
Yes. At V+ = 1.8 V and V– = 0 V, the output swings from 19 mV above ground to 23 mV below V+, delivering 1.758 V of usable range-97.7% of full scale-enabling high-resolution digitization without external level-shifting circuitry.
What is the typical input offset voltage drift over temperature?
The MP8102DJ-LF-Z has a typical input offset voltage temperature coefficient of 15 µV/°C. Over the full –40°C to +85°C operating range, this results in ≤1.875 mV additional offset drift, which remains within specification limits for most portable sensor applications.
Is the TSOT-23-5 package of MP8102DJ-LF-Z lead-free and RoHS compliant?
Yes. The MP8102DJ-LF-Z carries the "LF" suffix indicating lead-free, halogen-free, and RoHS-compliant construction. Its TSOT-23-5 package meets JEDEC J-STD-020 moisture sensitivity level 1 (MSL-1) and is compatible with standard reflow profiles.
How does MP8102DJ-LF-Z handle power supply rejection at low frequencies?
At DC and low frequencies (<10 Hz), the MP8102DJ-LF-Z provides 80 dB PSRR, meaning a 1 V ripple on the 1.8 V supply introduces only ~100 µV of error at the output-sufficient for precision DC measurements in battery-powered systems with minimal supply filtering.
MP8102DJ-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:
- Active
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 1
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 0.1V/µs
- Gain Bandwidth Product:
- 200 kHz
- -3db Bandwidth:
- 600 kHz
- Current - Input Bias:
- 2 pA
- Voltage - Input Offset:
- 1 mV
- Current - Supply:
- 7.5µA
- 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
MP8102DJ-LF-Z FAQ
1.How can I place an order for MP8102DJ-LF-Z through Aetrix?
Please submit a Request for Quotation (RFQ) for MP8102DJ-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 MP8102DJ-LF-Z reliable?
The price and inventory of MP8102DJ-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 MP8102DJ-LF-Z is usually 5 days.
3.What payment methods are accepted for MP8102DJ-LF-Z?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MP8102DJ-LF-Z transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MP8102DJ-LF-Z?
MP8102DJ-LF-Z orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MP8102DJ-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 MP8102DJ-LF-Z?
For technical support, including MP8102DJ-LF-Z datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MP8102DJ-LF-Z requirements.
6.How does Aetrix verify that MP8102DJ-LF-Z is sourced from the original manufacturer or authorized distributors?
All MP8102DJ-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 MP8102DJ-LF-Z meets industry standards.
7.What is the process for return or replacement of MP8102DJ-LF-Z?
All MP8102DJ-LF-Z units undergo pre-shipment inspection (PSI). If there is an issue with MP8102DJ-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 MP8102DJ-LF-Z part is unused and in its original packaging.
Return procedure for MP8102DJ-LF-Z:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MP8102DJ-LF-Z Tags
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LM358DT
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