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Monolithic Power Systems Inc. MP8103DK-LF-Z
- Part No.:
- MP8103DK-LF-Z
- Manufacturer:
- Monolithic Power Systems Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
MP8103DK-LF-Z.pdf
- Description:
- IC OPAMP GP 2 CIRCUIT 8MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,978
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Product details
Overview
MP8103DK-LF-Z 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 600kHz –3dB bandwidth, 14µA supply current per amplifier, and input common-mode range extending to ground, making it suitable for battery-powered sensor signal conditioning in portable medical devices.
For engineers reviewing the MP8103DK-LF-Z datasheet, MP8103DK-LF-Z pinout, MP8103DK-LF-Z application, or MP8103DK-LF-Z equivalent, key selection criteria include its 0.1V/µs slew rate, 1000pF capacitive load drive capability, unity-gain stability, and MSOP-8 footprint compatibility with space-constrained analog front-ends.
Technical Context
The MP8103DK-LF-Z integrates two independent low-power op-amps sharing a common supply domain, each featuring input bias current of 2pA and input offset voltage of ±5mV. Its rail-to-rail output stage supports full-swing operation into 10kΩ loads while maintaining 82dB CMRR and 80dB PSRR across 1.8–5.5V supply range.
This device operates over –40°C to +85°C and is specified with guaranteed gain-bandwidth product of 200kHz and short-circuit current limits of ±20mA. The input stage allows common-mode voltage down to V– (ground), enabling direct interfacing with single-ended sensors referenced to system ground.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 1.8V to 5.5V - Enables direct use with Li-ion, coin-cell, or 3.3V logic rails without level-shifting. |
| Quiescent Current | 14µA per amplifier - Supports multi-year battery life in always-on smoke detectors or wearable biosensors. |
| –3dB Bandwidth | 600kHz - Sufficient for ECG amplification, thermistor signal filtering, and audio pre-amplification up to ~100kHz. |
| Slew Rate | 0.1V/µs - Limits large-signal settling time to <10µs for 1V step, suitable for slow-varying sensor outputs. |
| Input Offset Voltage | ±5mV max - Introduces ≤0.5% error at 1V output; acceptable for non-precision DC-coupled applications. |
| Capacitive Load Drive | 1000pF - Allows direct connection to ADC input filters or long PCB traces without phase-margin loss. |
| Common-Mode Input Range | 0V to 3.8V - Accepts ground-referenced inputs (e.g., resistive bridge outputs) with no external bias network. |
Pinout & Package
MP8103DK-LF-Z is housed in an 8-pin MSOP package (3mm × 5mm, 0.65mm pitch), RoHS-compliant and tape-and-reel ready (–Z suffix). Thermal resistance θJA = 150°C/W enables operation at full rating in still-air environments.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUT1 | Output node of first op-amp; rail-to-rail swing supports full dynamic range into high-impedance loads. |
| 2 | IN1– | Inverting input of first op-amp; 2pA bias current minimizes voltage error across high-value feedback networks. |
| 3 | IN1+ | Non-inverting input of first op-amp; common-mode range includes ground, simplifying single-supply transducer interfaces. |
| 4 | V– | Ground reference pin; must be connected directly to low-impedance system ground plane for noise immunity. |
| 5 | IN2+ | Non-inverting input of second op-amp; electrically isolated from IN1+ to prevent crosstalk in dual-channel designs. |
| 6 | IN2– | Inverting input of second op-amp; matched input characteristics enable identical gain configurations for both channels. |
| 7 | OUT2 | Output node of second op-amp; independently buffered to avoid loading effects between channels. |
| 8 | V+ | Positive supply pin; requires local 10µF + 0.1µF ceramic bypassing per manufacturer recommendation. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail output swing | Delivers >99% of supply rail range (V– +19mV to V+ –23mV), maximizing ADC utilization in 1.8V systems. |
| Unity-gain stable | Operates reliably with gain = 1 without external compensation, reducing BOM count in buffer and follower circuits. |
| Input common-mode to ground | Eliminates need for input bias resistors when amplifying ground-referenced signals like thermistors or strain gauges. |
| Low input bias current (2pA) | Preserves accuracy in high-impedance sensor interfaces (e.g., pH electrodes, photodiode TIA feedback paths). |
| 1000pF capacitive load drive | Stabilizes output when driving anti-aliasing filters or long cables, avoiding peaking or oscillation. |
Applications
| Portable Medical Sensors | Smoke Detector Signal Chain |
|---|---|
Use Scenario: Amplifying low-level DC-coupled signals from pulse oximeter photodiodes or ECG electrodes in battery-operated wearables. IC Role / Device Role / Timing Role: Dual-channel instrumentation amplifier front-end providing gain, filtering, and rail-to-rail buffering before 12-bit SAR ADC sampling. Use Value: 14µA per channel extends coin-cell lifetime beyond 3 years; input-to-ground capability eliminates biasing components. | Use Scenario: Conditioning analog output from ionization chamber or photoelectric smoke sensor in residential alarm units. IC Role / Device Role / Timing Role: Low-power transimpedance amplifier and comparator hysteresis generator operating from 3V primary battery. Use Value: 1.8V minimum supply ensures functionality during battery discharge to 2.0V; 600kHz bandwidth captures rapid smoke-induced current transients. |
| Handheld GPS Front-End | Consumer Audio Line Driver |
Use Scenario: Buffering and level-shifting baseband I/Q signals from GPS RF IC to MCU ADC in compact navigation devices. IC Role / Device Role / Timing Role: Dual rail-to-rail voltage follower isolating sensitive RF section from digital noise coupling through shared power domains. Use Value: 82dB CMRR rejects supply ripple from switching regulators; MSOP-8 footprint fits tight RF layout constraints. | Use Scenario: Driving stereo line outputs from portable media players to headphones or external DACs with minimal power draw. IC Role / Device Role / Timing Role: Dual-output line driver delivering 1Vrms signal into 10kΩ loads with <0.1% THD+N at 1kHz. Use Value: 0.1V/µs slew rate prevents slew-induced distortion on music peaks; 5.5V max supply supports 3.3V or 5V host systems. |
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 pinout, 1.2µA lower quiescent current (12.8µA typ), 500kHz bandwidth | Better suited for sub-1µA standby modes; reduced bandwidth limits higher-frequency sensor signals | Select when ultra-deep sleep current dominates design priority over 600kHz response |
| MCP6022-E/SN | 2.5µA higher quiescent current (16.5µA typ), 1MHz bandwidth, 2.7V min supply | Requires ≥2.7V supply; higher bandwidth supports faster signal acquisition but increases power | Select when 1MHz bandwidth is required and system supply exceeds 2.7V |
Compared with MP8102DK-LF-Z and MCP6022-E/SN, MP8103DK-LF-Z uniquely balances 600kHz bandwidth and 14µA consumption at 1.8V operation-making it optimal for cost-sensitive, ground-referenced sensor nodes where supply headroom is constrained.
Availability
MP8103DK-LF-Z is available at Aetrix Electronics and suitable for portable medical equipment, smoke detector manufacturing, handheld GPS modules, and consumer audio line drivers requiring stable component supply and long-term production continuity.
Supply support for MP8103DK-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, headquartered in Kirkland, Washington, with global design and support operations.
The MP810x series targets ultra-low-power signal conditioning in battery-operated systems, emphasizing ground-sensing capability, rail-to-rail output, and minimal quiescent current without sacrificing usable bandwidth.
FAQ
Is MP8103DK-LF-Z pin-compatible with MP8102DK-LF-Z?
Yes, MP8103DK-LF-Z and MP8102DK-LF-Z share identical MSOP-8 pinout, electrical connections, and footprint. Both devices use pins 1–8 for OUT1, IN1–, IN1+, V–, IN2+, IN2–, OUT2, and V+, enabling drop-in replacement in existing layouts where bandwidth or quiescent current trade-offs are acceptable.
What is the maximum capacitive load the MP8103DK-LF-Z can drive without instability?
The MP8103DK-LF-Z is characterized to drive up to 1000pF capacitive loads while maintaining phase margin >45° and unity-gain stability. This specification is verified under standard test conditions (V+ = 5V, RL = 1MΩ, CL = 1000pF) and applies to both amplifiers independently.
Does MP8103DK-LF-Z support dual-supply operation?
Yes, MP8103DK-LF-Z supports dual-supply operation from ±0.9V to ±2.75V (total supply 1.8V to 5.5V), as confirmed by absolute maximum ratings specifying V+ to V– ≤ +6.0V and recommended operating conditions listing symmetric supply ranges.
Can MP8103DK-LF-Z operate with input voltages below ground?
No-the input common-mode voltage range is specified from 0V (V–) to 3.8V, meaning inputs must remain at or above ground potential. The datasheet states "input common mode can go below the negative rail" only in the descriptive text, but electrical characteristics table explicitly defines VCM min = 0V under CMRR >60dB condition, confirming ground is the lower limit.
What bypass capacitor configuration is recommended for MP8103DK-LF-Z?
Monolithic Power Systems recommends placing a 10µF tantalum or aluminum electrolytic capacitor in parallel with a 0.1µF X7R ceramic capacitor on both V+ and V– pins. These must be located within 2mm of the device pins, using low-ESL/low-ESR ceramics, to suppress supply noise and ensure stable high-frequency performance.
Is MP8103DK-LF-Z suitable for new designs?
No-the datasheet explicitly states "NOT RECOMMENDED FOR NEW DESIGNS REFER TO MP8102" on multiple pages. MP8102DK-LF-Z is the designated successor with improved quiescent current and updated characterization; MP8103DK-LF-Z remains available for legacy support and existing production.
MP8103DK-LF-Z 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-Z FAQ
1.How can I place an order for MP8103DK-LF-Z through Aetrix?
Please submit a Request for Quotation (RFQ) for MP8103DK-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 MP8103DK-LF-Z reliable?
The price and inventory of MP8103DK-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 MP8103DK-LF-Z is usually 5 days.
3.What payment methods are accepted for MP8103DK-LF-Z?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MP8103DK-LF-Z transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MP8103DK-LF-Z?
MP8103DK-LF-Z orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MP8103DK-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 MP8103DK-LF-Z?
For technical support, including MP8103DK-LF-Z datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MP8103DK-LF-Z requirements.
6.How does Aetrix verify that MP8103DK-LF-Z is sourced from the original manufacturer or authorized distributors?
All MP8103DK-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 MP8103DK-LF-Z meets industry standards.
7.What is the process for return or replacement of MP8103DK-LF-Z?
All MP8103DK-LF-Z units undergo pre-shipment inspection (PSI). If there is an issue with MP8103DK-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 MP8103DK-LF-Z part is unused and in its original packaging.
Return procedure for MP8103DK-LF-Z:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MP8103DK-LF-Z Tags
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