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Monolithic Power Systems Inc. MP8103DK-LF-P
- Part No.:
- MP8103DK-LF-P
- Manufacturer:
- Monolithic Power Systems Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
MP8103DK-LF-P.pdf
- Description:
- IC OPAMP GP 2 CIRCUIT 8MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,652
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Product details
Overview
MP8103DK-LF-P from Monolithic Power Systems is a dual rail-to-rail output operational amplifier optimized for ultra-low-power, single-supply operation from 1.8V to 5.5V. It delivers 600 kHz –3 dB bandwidth, 14 µA supply current per amplifier, and rail-to-rail output swing while supporting input common-mode voltage down to ground. It is used in battery-powered smoke detectors and portable medical sensors where sub-2V operation and microamp quiescent current are critical.
For engineers reviewing the MP8103DK-LF-P datasheet, MP8103DK-LF-P pinout, MP8103DK-LF-P application, or MP8103DK-LF-P equivalent, key selection criteria include guaranteed 600 kHz bandwidth at 14 µA, input common-mode range extending to V–, ±0.9V dual-supply compatibility, and MSOP8 thermal resistance (θJA = 150°C/W) for compact low-power signal conditioning.
Technical Context
The MP8103DK-LF-P integrates two independent high-impedance, unity-gain-stable op-amps with matched input bias currents (2 pA typ.) and offset voltage (±5 mV max). Its architecture supports capacitive loads up to 1000 pF without oscillation and maintains stability across supply voltages from 1.8V to 5.5V.
It features rail-to-rail output stage design enabling full-swing operation into 10 kΩ loads (VOUT = V+ – 23 mV / V– + 19 mV), and achieves 0.1 V/µs slew rate with 82 dB CMRR and 80 dB PSRR at DC - critical for precision analog front-ends in energy-constrained systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 1.8V to 5.5V - enables direct interface with Li-ion, coin-cell, and 3.3V logic rails without level-shifting. |
| Quiescent Current | 14 µA per amplifier - allows continuous sensor signal amplification in multi-year battery-operated devices. |
| –3 dB Bandwidth | 600 kHz - supports audio-band and low-speed sensor signal conditioning (e.g., ECG, gas sensing). |
| Input Offset Voltage | ±5 mV max - ensures <1% gain error in 100 mV full-scale sensor interfaces without trimming. |
| Slew Rate | 0.1 V/µs - sufficient for 100 Hz sine wave output at 1 VPP with <0.1% distortion. |
| Input Bias Current | 2 pA typ. - minimizes voltage error across high-impedance pH or photodiode transimpedance networks. |
| Common-Mode Range | 0 V to 3.8 V - permits direct connection to ground-referenced sensors and single-ended ADC drivers. |
Pinout & Package
MP8103DK-LF-P is housed in an 8-pin MSOP package (3 mm × 5 mm, 0.65 mm pitch) with exposed pad for thermal enhancement. Pin 1 is marked by half-circle indentation per JEDEC MO-187 AA.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUT1 | Output of first op-amp - drives external load or feedback network; rail-to-rail capable. |
| 2 | IN1– | Inverting input of first op-amp - accepts feedback or differential signal; 2 pA bias current. |
| 3 | IN1+ | Non-inverting input of first op-amp - connects to sensor or reference; supports V–-to-V+–1.2V common-mode. |
| 4 | V– | Ground or negative supply terminal - shared return path for both amplifiers; must be low-impedance. |
| 5 | IN2+ | Non-inverting input of second op-amp - independent channel for dual-sensor or filter stage. |
| 6 | IN2– | Inverting input of second op-amp - matches IN1– electrical characteristics for matched gain stages. |
| 7 | OUT2 | Output of second op-amp - electrically isolated from OUT1; same drive capability and swing limits. |
| 8 | V+ | Positive supply terminal - accepts 1.8V–5.5V; bypassing with 10 µF || 0.1 µF ceramic required. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail output | Swings within 19 mV of V– and 23 mV of V+ at 10 kΩ load - preserves dynamic range in low-voltage ADC interfaces. |
| Unity-gain stable | No external compensation required for gain ≥1 configurations - simplifies layout and reduces BOM count. |
| Capacitive load drive | Stable with up to 1000 pF - eliminates need for isolation resistors in LCD bias or piezo driver applications. |
| Input common-mode to ground | Operates with inputs at 0 V (V–) - enables direct connection to grounded thermistors or bridge sensors. |
| Low temperature drift | 15 µV/°C input offset drift - limits drift-induced error to <0.15 mV over –40°C to +85°C industrial range. |
Applications
| Smoke Detector Signal Conditioning | Portable ECG Front-End |
|---|---|
|
Use Scenario: Amplifying weak ionization chamber current (pA–nA) in battery-powered residential smoke alarms. IC Role / Device Role / Timing Role: Dual-channel transimpedance and filtering amplifier - one channel for baseline correction, one for signal amplification. Use Value: 14 µA per amplifier enables >5-year battery life on CR123A; rail-to-rail output maximizes ADC utilization at 2.0V supply. |
Use Scenario: Low-noise, low-power amplification of 0.5–5 mV bio-potential signals in handheld ECG monitors. IC Role / Device Role / Timing Role: First-stage instrumentation amplifier core - configured as difference amplifier with matched input pairs. Use Value: 2 pA input bias current prevents electrode polarization errors; 600 kHz bandwidth supports 100 Hz Nyquist sampling with margin. |
| Handheld GPS RF Front-End Bias | Smart Pagers Analog Audio Path |
|
Use Scenario: Providing stable bias voltage and low-noise reference for LNA and mixer stages in miniaturized GPS receivers. IC Role / Device Role / Timing Role: Precision voltage reference buffer and active filter - rejects supply ripple on 3.3V rail feeding RF ICs. Use Value: 80 dB PSRR at DC suppresses digital noise coupling; 1.8V minimum supply allows co-location with ultra-low-power GNSS SoCs. |
Use Scenario: Driving earpiece and microphone circuits in legacy paging devices operating from single alkaline cells. IC Role / Device Role / Timing Role: Audio line driver and preamplifier - handles 100 mV–1 VPP voiceband signals with minimal THD. Use Value: 0.1 V/µs slew rate supports 3 kHz voiceband without slew-induced distortion; MSOP8 footprint saves PCB area in space-constrained enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual low-power op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MP8102DK-LF-Z | Same die, updated revision with improved ESD rating (HBM 2 kV vs. 1.5 kV); identical electrical specs. | Preferred for new designs requiring higher robustness in handling-sensitive environments. | Select MP8102DK-LF-Z for all new designs; MP8103DK-LF-P is not recommended for new designs per MPS documentation. |
| MCP6002-E/SN | Higher supply current (1 µA vs. 14 µA), wider bandwidth (1 MHz), but no input common-mode to ground (V– + 0.3 V min). | Better for higher-speed, non-grounded sensor interfaces where power budget allows >70× higher IQ. | Choose MCP6002-E/SN only if bandwidth >600 kHz is required and input cannot go below V– + 0.3 V. |
Compared with MP8102DK-LF-Z, MP8103DK-LF-P lacks updated ESD protection and is deprecated; compared with MCP6002-E/SN, it trades bandwidth for 70× lower quiescent current and true ground-sensing capability - making it irreplaceable in sub-2V, ground-referenced, multi-year battery applications.
Availability
MP8103DK-LF-P is available at Aetrix Electronics and suitable for smoke detector manufacturing, portable medical device production, handheld GPS module assembly, and smart pager refurbishment requiring stable component supply across extended product lifecycles.
Supply support for MP8103DK-LF-P 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 MP810x series was developed specifically for ultra-low-power, single-supply signal conditioning in portable and battery-critical systems - emphasizing microamp quiescent current, rail-to-rail operation, and ground-sensing capability.
FAQ
Is MP8103DK-LF-P RoHS compliant?
Yes. The "-LF" suffix indicates lead-free, RoHS-compliant packaging per EU Directive 2011/65/EU. The device uses matte tin plating on leads and meets JEDEC J-STD-020 moisture sensitivity level 1 (MSL1) requirements.
Can MP8103DK-LF-P operate from a 1.8V single supply?
Yes. The datasheet specifies guaranteed operation from 1.8V to 5.5V single supply, including full rail-to-rail output swing and 600 kHz bandwidth at 1.8V. Input common-mode range extends to V– (0 V), enabling direct interfacing with grounded sensors.
What is the maximum capacitive load MP8103DK-LF-P can drive stably?
The device is characterized to drive up to 1000 pF capacitively without requiring external isolation resistors or compensation. This is verified in the datasheet's "Capacitive Load Drive" section and confirmed in Figure 6's phase margin plots with CL = 1000 pF.
Why is MP8103DK-LF-P marked "Not Recommended for New Designs"?
MPS explicitly states this in the datasheet header and footers due to the introduction of the MP8102 - a functionally identical but ESD-enhanced (HBM 2 kV) revision. MP8102DK-LF-Z replaces MP8103DK-LF-P for all new designs, though MP8103 remains fully supported for legacy production.
Does MP8103DK-LF-P require external compensation for unity-gain configuration?
No. The amplifier is unity-gain stable per datasheet Feature list and Figure 1's unity-gain frequency response plot. No external compensation capacitor or resistor is needed when configured as a voltage follower or non-inverting amplifier with gain = 1.
What is the thermal resistance θJA for MP8103DK-LF-P in MSOP8?
The datasheet specifies θJA = 150°C/W for the MSOP8 package under standard JEDEC test conditions (1-inch² 1 oz copper pad). This value assumes proper PCB layout with thermal vias to inner ground planes for production-level thermal performance.
How does input offset voltage drift affect long-term accuracy?
With a typical drift of 15 µV/°C, total offset variation over the full –40°C to +85°C range is ≤1.875 mV. At 5 mV max initial VOS, worst-case total offset remains ≤6.875 mV - acceptable for 12-bit ADC systems with ≥2 V full-scale range.
MP8103DK-LF-P Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Monolithic Power Systems Inc.
- Series:
- -
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Not For New Designs
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 2
- 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:
- 14µA
- 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:
- 8-MSOP
MP8103DK-LF-P FAQ
1.How can I place an order for MP8103DK-LF-P through Aetrix?
Please submit a Request for Quotation (RFQ) for MP8103DK-LF-P 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 MP8103DK-LF-P reliable?
The price and inventory of MP8103DK-LF-P are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MP8103DK-LF-P is usually 5 days.
3.What payment methods are accepted for MP8103DK-LF-P?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MP8103DK-LF-P transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MP8103DK-LF-P?
MP8103DK-LF-P orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MP8103DK-LF-P 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 MP8103DK-LF-P?
For technical support, including MP8103DK-LF-P datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MP8103DK-LF-P requirements.
6.How does Aetrix verify that MP8103DK-LF-P is sourced from the original manufacturer or authorized distributors?
All MP8103DK-LF-P 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 MP8103DK-LF-P meets industry standards.
7.What is the process for return or replacement of MP8103DK-LF-P?
All MP8103DK-LF-P units undergo pre-shipment inspection (PSI). If there is an issue with MP8103DK-LF-P, 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 MP8103DK-LF-P part is unused and in its original packaging.
Return procedure for MP8103DK-LF-P:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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