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Monolithic Power Systems Inc. MP5420DM-LF-Z
- Part No.:
- MP5420DM-LF-Z
- Manufacturer:
- Monolithic Power Systems Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
MP5420DM-LF-Z.pdf
- Description:
- IC OPAMP GP 4 CIRCUIT 14TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,247
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Product details
Overview
MP5420DM-LF-Z from Monolithic Power Systems is a quad-channel, rail-to-rail input-output operational amplifier optimized for TFT-LCD voltage reference buffering. It operates from ±9V supplies (±1.6V to ±9V range), delivers 20MHz –3dB bandwidth, 45V/µs slew rate, and 1.6mA per amplifier supply current, with output swing within 100mV of each rail - enabling precise analog signal conditioning in portable display systems.
For engineers reviewing the MP5420DM-LF-Z datasheet, MP5420DM-LF-Z pinout, MP5420DM-LF-Z application, or MP5420DM-LF-Z equivalent, key selection criteria include rail-to-rail I/O capability at ±9V, 50mA output drive per channel, unity-gain stability, and TSSOP-14 packaging for high-density LCD driver board layouts.
Technical Context
The MP5420 employs dual-input-stage architecture: a PNP pair for inputs from VS− −0.5V to VS+ −1V, and an NPN pair extending input range to VS+ +0.5V. This enables true rail-to-rail common-mode operation but introduces transition-region distortion near the crossover point.
Output stage supports ±50mA continuous sourcing/sinking, though current delivery degrades as output approaches supply rails. PSRR is 70–95dB across DC–100kHz, falling with frequency - requiring careful decoupling (e.g., 0.1nF + 10µF per supply) to suppress switching noise in TFT-LCD power domains.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | ±1.6V to ±9.0V - supports standard ±5V and ±9V display bias rails without level-shifting. |
| –3dB Bandwidth | 20MHz - sufficient for fast settling of grayscale voltage references in high-resolution TFT panels. |
| Slew Rate | 45V/µs - enables <500ns 0.1% settling for 2V step signals, critical for pixel charge-time accuracy. |
| Input Common-Mode Range | VS− −0.5V to VS+ +0.5V - allows direct connection to DAC outputs spanning full supply range. |
| Output Swing | Within 100mV of VS+ and VS− - preserves >98% dynamic range for 10-bit+ gamma correction voltages. |
| Supply Current per Amp | 1.6mA - total 6.4mA quiescent draw for quad channel, enabling low-power portable display operation. |
| Channel Separation | 70dB at 5MHz - minimizes crosstalk between adjacent data-line buffers in column driver IC interfaces. |
Pinout & Package
The MP5420DM-LF-Z is housed in a 14-pin TSSOP package (JEDEC MO-153 compliant), 5.0mm × 4.4mm footprint, 0.65mm pitch, with exposed thermal pad for enhanced power dissipation in compact LCD module designs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | VINA− | Inverting input for Channel A - referenced to local ground or feedback network in closed-loop buffer configuration. |
| 2 | VINA+ | Non-inverting input for Channel A - accepts reference voltage from DAC or precision divider. |
| 3 | VOUTA | Output for Channel A - drives one TFT column line or gamma voltage node directly. |
| 4 | VS+ | Positive supply rail - must be decoupled locally with 0.1nF ceramic + 10µF bulk capacitor. |
| 5 | VINB+ | Non-inverting input for Channel B - isolated signal path for independent voltage reference buffering. |
| 6 | VINB− | Inverting input for Channel B - enables differential or single-ended configurations per channel. |
| 7 | VOUTB | Output for Channel B - electrically isolated from Channel A to prevent inter-channel coupling. |
| 8 | VS− | Negative supply rail - requires symmetric decoupling to maintain PSRR performance. |
| 9 | VINC+ | Non-inverting input for Channel C - supports multi-reference architectures (e.g., R/G/B gamma sets). |
| 10 | VINC− | Inverting input for Channel C - configurable for unity-gain or gain-of-2 buffering per channel. |
| 11 | VOUTC | Output for Channel C - maintains 70dB channel separation up to 5MHz for high-fidelity analog routing. |
| 12 | VIND− | Inverting input for Channel D - enables four independent buffered references on single IC. |
| 13 | VIND+ | Non-inverting input for Channel D - supports daisy-chained or parallel reference distribution. |
| 14 | VOUTD | Output for Channel D - rated for ±50mA, allowing direct drive of low-impedance panel calibration nodes. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input with dual differential pairs | Enables direct interface to 0–VDD DAC outputs without external level shifters or clamping diodes. |
| Output swing within 100mV of rails | Preserves full-scale resolution for 10-bit gamma tables (e.g., 0–10.0V range yields 9.9V usable span). |
| 45V/µs slew rate + 20MHz bandwidth | Supports ≤500ns settling for 2V steps - meets timing budget for 120Hz+ refresh-rate displays. |
| ±50mA output drive per channel | Drives capacitive loads up to 1000pF while maintaining stability, eliminating need for external buffers. |
| Unity-gain stable operation | Permits direct use as voltage follower without compensation networks - reduces BOM count and layout area. |
Applications
| TFT-LCD Gamma Reference Buffering | Portable Instrumentation Signal Conditioning |
|---|---|
Use Scenario: Generating precise, low-noise grayscale voltage references for 8–10-bit TFT column drivers in notebook displays. IC Role / Device Role / Timing Role: Quad op-amp configured as unity-gain followers, each buffering a separate gamma voltage from a DAC or resistor ladder. Use Value: 100mV rail-to-rail output swing ensures >98% utilization of 0–10V reference range, minimizing quantization error in gamma correction. | Use Scenario: Amplifying and conditioning sensor outputs (e.g., thermistor, strain gauge) in handheld test equipment. IC Role / Device Role / Timing Role: Single-supply or dual-supply signal conditioner with rail-to-rail I/O, driving 12-bit SAR ADC inputs. Use Value: 20MHz bandwidth and 45V/µs slew rate enable accurate capture of fast transients (<500ns rise time) without slew-induced distortion. |
| Electronic Game Display Driver | Touch-Screen Controller Analog Front-End |
Use Scenario: Driving high-speed video data lines in portable gaming devices with active-matrix OLED or LCD panels. IC Role / Device Role / Timing Role: Quad-channel buffer isolating RGB gamma references and VCOM modulation signals. Use Value: 70dB channel separation at 5MHz prevents color crosstalk during rapid screen updates (≥60fps). | Use Scenario: Buffering X/Y coordinate reference voltages and touch-sense amplification in resistive or capacitive touch controllers. IC Role / Device Role / Timing Role: Low-drift, high-drive buffer for precision voltage references feeding multiplexed analog front-end switches. Use Value: ±50mA output current supports direct drive of 10kΩ touch-panel impedance without gain degradation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad rail-to-rail op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LMV344IDR | Lower supply range (2.7–5.5V), 1MHz bandwidth, 1V/µs slew rate - not suitable for ±9V or high-speed LCD buffering. | Targeted at low-voltage portable logic-level signal conditioning, not display reference buffering. | Select only for battery-powered 3.3V systems where speed and rail-to-rail swing are secondary. |
| AD8604ARUZ | Single-supply only (2.7–6V), 8MHz bandwidth, 5V/µs slew rate, lower output drive (65mA short-circuit, not continuous). | Optimized for precision instrumentation, not high-current, high-slew display driver roles. | Prefer when offset voltage (<600µV) and drift matter more than ±9V operation or 45V/µs response. |
Compared with LMV344IDR and AD8604ARUZ, the MP5420DM-LF-Z uniquely combines ±9V operation, 20MHz bandwidth, 45V/µs slew rate, and 50mA continuous output per channel - making it the only viable quad op-amp for TFT-LCD gamma reference buffering at full industrial voltage and speed requirements.
Availability
MP5420DM-LF-Z is available at Aetrix Electronics and suitable for TFT-LCD display modules, portable instrumentation signal chains, and electronic game display driver circuits requiring stable component supply across extended temperature ranges (–40°C to +85°C).
Supply support for MP5420DM-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 mixed-signal ICs for power management and signal conditioning, founded in 1997 and headquartered in San Jose, California.
The MP5120/MP5220/MP5420 family was designed specifically for high-speed, high-voltage analog buffering in flat-panel display systems - emphasizing rail-to-rail operation, low distortion, and robust output drive under dynamic load conditions.
FAQ
What is the maximum continuous output current per channel of the MP5420DM-LF-Z?
The MP5420DM-LF-Z supports ±50mA continuous output current per amplifier channel under recommended operating conditions (TA = 25°C, VS+ = +5V, VS− = −5V). Output current capability decreases as output voltage approaches either supply rail, and thermal derating applies above 85°C ambient.
Does the MP5420DM-LF-Z require external compensation for unity-gain stability?
No - the MP5420DM-LF-Z is internally compensated for unity-gain stability. It operates reliably as a voltage follower without external capacitors or resistors, simplifying PCB layout and reducing component count in reference buffer applications.
Can the MP5420DM-LF-Z operate from a single 12V supply instead of dual ±9V?
Yes - the device supports single-supply operation from 3.2V to 18V total supply range. For 12V single supply, connect VS− to ground and VS+ to +12V; input common-mode and output swing will then be referenced accordingly (e.g., 0V to 12V range with 100mV headroom).
What is the typical input offset voltage for the MP5420DM-LF-Z?
The typical input offset voltage is 2mV at 25°C with VCM = 5V (i.e., ±5V dual supply). Maximum specified offset is 20mV over temperature, and average drift is 5µV/°C - suitable for precision reference buffering where absolute accuracy is less critical than tracking and settling speed.
Is the MP5420DM-LF-Z RoHS compliant and lead-free?
Yes - the "-LF" suffix in MP5420DM-LF-Z denotes lead-free, RoHS-compliant packaging. The device uses matte tin lead finish and meets JEDEC J-STD-020 moisture sensitivity level 3 (MSL3) for standard surface-mount assembly processes.
How does the dual-input-stage architecture affect distortion near supply rails?
The transition between PNP and NPN input stages occurs near VS+ −1V. Inputs within ±100mV of either rail may exhibit increased harmonic distortion and degraded CMRR due to incomplete overlap or mismatch in the crossover region - avoid sustained operation in this zone for high-fidelity analog paths.
What decoupling capacitance is recommended for stable operation?
Each supply pin requires a minimum 0.1nF ceramic capacitor placed within 2mm of the pin, plus a 10µF bulk capacitor per supply rail. Use low-ESR tantalum or polymer capacitors for the bulk stage, and ensure ground plane connectivity to minimize loop inductance in high-slew-rate paths.
MP5420DM-LF-Z Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Monolithic Power Systems Inc.
- Series:
- -
- Package/Case:
- 14-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 4
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 45V/µs
- Gain Bandwidth Product:
- 14 MHz
- -3db Bandwidth:
- 20 MHz
- Current - Input Bias:
- 500 nA
- Voltage - Input Offset:
- 2 mV
- Current - Supply:
- 1.6mA (x4 Channels)
- Current - Output / Channel:
- 130 mA
- Voltage - Supply Span (Min):
- 3.2 V
- Voltage - Supply Span (Max):
- 18 V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-TSSOP
MP5420DM-LF-Z FAQ
1.How can I place an order for MP5420DM-LF-Z through Aetrix?
Please submit a Request for Quotation (RFQ) for MP5420DM-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 MP5420DM-LF-Z reliable?
The price and inventory of MP5420DM-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 MP5420DM-LF-Z is usually 5 days.
3.What payment methods are accepted for MP5420DM-LF-Z?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MP5420DM-LF-Z transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MP5420DM-LF-Z?
MP5420DM-LF-Z orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MP5420DM-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 MP5420DM-LF-Z?
For technical support, including MP5420DM-LF-Z datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MP5420DM-LF-Z requirements.
6.How does Aetrix verify that MP5420DM-LF-Z is sourced from the original manufacturer or authorized distributors?
All MP5420DM-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 MP5420DM-LF-Z meets industry standards.
7.What is the process for return or replacement of MP5420DM-LF-Z?
All MP5420DM-LF-Z units undergo pre-shipment inspection (PSI). If there is an issue with MP5420DM-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 MP5420DM-LF-Z part is unused and in its original packaging.
Return procedure for MP5420DM-LF-Z:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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