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Monolithic Power Systems Inc. MP5420DM-LF
- Part No.:
- MP5420DM-LF
- Manufacturer:
- Monolithic Power Systems Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
MP5420DM-LF.pdf
- Description:
- IC OPAMP GP 4 CIRCUIT 14TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,067
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Product details
Overview
MP5420DM-LF from Monolithic Power Systems is a quad-channel, high-speed, rail-to-rail input-output operational amplifier optimized for TFT-LCD voltage reference buffering. It operates from ±1.6V to ±9V supplies, delivers 20MHz –3dB bandwidth, 45V/µs slew rate, and 50mA output drive per channel in a 14-pin TSSOP package.
For engineers reviewing the MP5420DM-LF datasheet, MP5420DM-LF pinout, MP5420DM-LF application, or MP5420DM-LF equivalent, key selection criteria include rail-to-rail input/output swing (±100mV of rails), low 1.6mA per-amplifier supply current, channel separation at 70dB (5MHz), and suitability for portable display driver circuits requiring fast settling (500ns to ±0.1%).
Technical Context
The MP5420DM-LF integrates four independent high-slew-rate op-amps sharing a common ±9V dual supply. Each channel uses dual-input-stage architecture-PNP pair for near-negative-rail operation and NPN pair for near-positive-rail operation-to achieve rail-to-rail input capability with CMIR from –5.5V to +5.5V.
Output stage supports ±50mA continuous sourcing/sinking, with output swing limited to within 100mV of either supply rail under 5mA load. Unity-gain stability and 50° phase margin ensure robust performance in buffer and active filter configurations without external compensation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | ±1.6V to ±9.0V - supports standard ±5V and ±9V display bias rails |
| –3dB Bandwidth | 20MHz - enables accurate amplification of high-frequency LCD gamma correction signals |
| Slew Rate | 45V/µs - ensures sub-microsecond transient response for pixel voltage settling |
| Input Common-Mode Range | VS− −0.5V to VS+ +0.5V - allows direct connection to DAC outputs spanning full supply |
| Output Swing (RL=10kΩ) | Within 100mV of each rail - maximizes dynamic range in single-supply-referenced display systems |
| Channel Separation | 70dB at 5MHz - prevents crosstalk between adjacent RGB or gate driver channels |
| Supply Current per Channel | 1.6mA - enables quad-channel operation at <6.4mA total, critical for battery-powered notebooks |
Pinout & Package
The MP5420DM-LF is housed in a 14-pin Thin Shrink Small Outline Package (TSSOP) with standard op-amp pinout and 0.65mm lead pitch. Thermal resistance θJA is 40°C/W on a 4-layer PCB per JESD51-7.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | VINA− | Inverting input of Channel A - accepts differential or single-ended feedback signals |
| 2 | VINA+ | Non-inverting input of Channel A - connects directly to DAC output or reference divider |
| 3 | VOUTA | Output of Channel A - drives column electrode or gamma voltage node with 50mA capability |
| 4 | VS− | Negative supply rail - shared across all four amplifiers; requires local 10µF decoupling |
| 5 | VINB+ | Non-inverting input of Channel B - isolated signal path for second display channel |
| 6 | VINB− | Inverting input of Channel B - supports inverting gain configuration for offset correction |
| 7 | VOUTB | Output of Channel B - electrically isolated from Channel A to maintain 70dB channel separation |
| 8 | VS+ | Positive supply rail - shared across all channels; must be decoupled with 0.1nF + 10µF |
| 9 | VINC+ | Non-inverting input of Channel C - dedicated input for third gamma segment or timing control |
| 10 | VINC− | Inverting input of Channel C - enables precision summing or differential sensing |
| 11 | VOUTC | Output of Channel C - capable of driving capacitive loads up to 100pF without instability |
| 12 | VIND− | Inverting input of Channel D - supports unity-gain inverter configuration for polarity inversion |
| 13 | VIND+ | Non-inverting input of Channel D - referenced to internal or external bias network |
| 14 | VOUTD | Output of Channel D - fully rail-to-rail swing enables direct interface to TFT source drivers |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input and output | Enables direct interfacing with 0–5V or ±5V DACs and full utilization of display bias voltage range |
| 45V/µs slew rate | Supports <500ns settling to ±0.1% for 2V step - meets TFT column line charging timing budgets |
| 70dB channel separation at 5MHz | Maintains signal integrity across RGB channels in high-resolution displays without guard traces |
| 1.6mA per amplifier supply current | Allows quad-channel operation at <6.4mA total - extends battery life in portable electronics |
| Unity-gain stable design | Eliminates need for external compensation components in buffer applications, reducing BOM count |
Applications
| TFT-LCD Gamma Reference Buffer | Portable Instrumentation Signal Conditioning |
|---|---|
Use Scenario: Driving gamma voltage taps in high-resolution TFT-LCD panels with 8-bit or higher grayscale precision. IC Role / Device Role / Timing Role: Quad op-amp configured as four independent unity-gain buffers, each stabilizing one gamma reference node against load variation. Use Value: Rail-to-rail output swing preserves full 0–5V gamma range; 20MHz bandwidth rejects switching noise from adjacent DC-DC converters. | Use Scenario: Amplifying low-level sensor outputs (e.g., thermistor, photodiode) in handheld test equipment. IC Role / Device Role / Timing Role: Single-supply or dual-supply signal conditioning stage with adjustable gain and low-noise performance. Use Value: 1.6mA per channel minimizes power draw; 45V/µs slew rate supports fast step-response calibration routines. |
| Electronic Notebook Display Driver | Touch-Screen Display Analog Front-End |
Use Scenario: Providing stable reference voltages for source driver ICs in 10–12 inch notebook displays. IC Role / Device Role / Timing Role: Quad-channel voltage follower delivering precise bias to multiple source driver inputs simultaneously. Use Value: 70dB channel separation prevents RGB crosstalk; TSSOP14 footprint saves board space vs. discrete SOIC solutions. | Use Scenario: Buffering analog outputs from resistive touch controller ADCs before digitization. IC Role / Device Role / Timing Role: Low-distortion, rail-to-rail input buffer isolating ADC input from variable touch panel impedance. Use Value: Input swing beyond rails (±0.5V) accommodates ADC reference offsets; 50mA drive handles capacitive touch panel loads. |
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 |
|---|---|---|---|
| LMV324IDR | Lower 1MHz bandwidth, 1V/µs slew rate, 36V max supply, no rail-to-rail input | Not suitable for high-speed gamma buffering; acceptable only in low-frequency bias networks | Select only if cost sensitivity outweighs speed and rail-to-rail requirements |
| AD8604ARUZ | Higher 8MHz bandwidth, 5V/µs slew rate, ±2.5V to ±6V supply, rail-to-rail I/O, but 2.4mA per channel | Better precision (300µV VOS) but insufficient drive (20mA) for direct TFT electrode loading | Prefer for low-noise sensor interfaces; avoid where >30mA output current is required |
Compared with LMV324IDR and AD8604ARUZ, MP5420DM-LF uniquely combines 20MHz bandwidth, 45V/µs slew rate, rail-to-rail I/O, and 50mA output drive in a quad TSSOP - making it the only option qualified for direct gamma reference buffering in modern TFT-LCD modules.
Availability
MP5420DM-LF is available at Aetrix Electronics and suitable for TFT-LCD drive circuits, portable instrumentation signal chains, electronic notebook display subsystems, and touch-screen analog front-ends requiring stable component supply and RoHS-compliant packaging.
Supply support for MP5420DM-LF 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.
The MP5120/MP5220/MP5420 family was designed specifically for high-speed, high-voltage rail-to-rail buffering in TFT-LCD display systems - emphasizing bandwidth, output drive, and multi-channel integration in compact packages.
FAQ
What is the maximum operating junction temperature for MP5420DM-LF?
The absolute maximum junction temperature is +125°C. The device incorporates internal thermal shutdown protection that activates when die temperature exceeds this limit. Under recommended operating conditions (–40°C to +85°C ambient), thermal resistance θJA of 40°C/W on a 4-layer PCB ensures safe operation at full 50mA output per channel with proper decoupling.
Can MP5420DM-LF operate from a single 10V supply instead of dual ±5V?
Yes - the MP5420DM-LF supports single-supply operation from 3.2V to 18V total supply range. For a 10V single supply, connect VS+ to 10V and VS− to ground. Input common-mode range extends from –0.5V to +10.5V, and output swings within 100mV of both rails, enabling true rail-to-rail functionality in single-ended systems.
Does MP5420DM-LF require external compensation for unity-gain stability?
No - the MP5420DM-LF is internally compensated for unity-gain stability. Electrical characteristics specify 50° phase margin at unity gain with 10pF load, and no external compensation components are needed in standard buffer configurations. Stability is maintained up to 100pF capacitive load per output.
How does the dual-input-stage architecture affect distortion near supply rails?
The transition between PNP and NPN input stages occurs near VS+ −1V. Within ±0.5V of either rail, distortion increases due to reduced transconductance and mismatched input pairs. For lowest THD, keep input signals within –5.5V to +5.5V (at ±5V supply); datasheet specifies CMRR degradation outside this range.
What decoupling capacitance is recommended for MP5420DM-LF's supply pins?
Each supply rail (VS+ and VS−) requires parallel decoupling: a 0.1nF ceramic capacitor placed <2mm from the pin, plus a 10µF low-ESR tantalum or ceramic bulk capacitor within 5mm. This combination suppresses high-frequency switching noise and maintains PSRR >70dB up to 100kHz, as verified in typical application circuits.
Is MP5420DM-LF pin-compatible with other quad op-amps in TSSOP14 packages?
No - MP5420DM-LF uses a proprietary pinout optimized for TFT-LCD reference buffering, with interleaved inputs and outputs per channel. Standard TSSOP14 quad op-amps (e.g., LM324) have different pin assignments. PCB layout must follow the exact pin mapping shown in the MPS datasheet Figure 1.
What is the typical input offset voltage drift over temperature?
The average input offset voltage drift is 5µV/°C, measured across –40°C to +85°C. This value reflects long-term stability of the input differential pairs and is critical for gamma reference accuracy in displays where drift causes visible grayscale banding over temperature cycles.
MP5420DM-LF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Monolithic Power Systems Inc.
- Series:
- -
- Package/Case:
- 14-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Tube
- 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 FAQ
1.How can I place an order for MP5420DM-LF through Aetrix?
Please submit a Request for Quotation (RFQ) for MP5420DM-LF 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 reliable?
The price and inventory of MP5420DM-LF 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 is usually 5 days.
3.What payment methods are accepted for MP5420DM-LF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MP5420DM-LF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MP5420DM-LF?
MP5420DM-LF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MP5420DM-LF 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?
For technical support, including MP5420DM-LF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MP5420DM-LF requirements.
6.How does Aetrix verify that MP5420DM-LF is sourced from the original manufacturer or authorized distributors?
All MP5420DM-LF 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 meets industry standards.
7.What is the process for return or replacement of MP5420DM-LF?
All MP5420DM-LF units undergo pre-shipment inspection (PSI). If there is an issue with MP5420DM-LF, 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 part is unused and in its original packaging.
Return procedure for MP5420DM-LF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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