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Texas Instruments LMP7704MTX
- Part No.:
- LMP7704MTX
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
LMP7704MTX.pdf
- Description:
- IC OPAMP GP 4 CIRCUIT 14TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,279
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Product details
Overview
LMP7704MTX from Texas Instruments is a quad-channel, rail-to-rail input/output precision operational amplifier with CMOS input stage, ±220-µV maximum input offset voltage, ±200 fA input bias current, and 2.5-MHz unity-gain bandwidth-designed for high-impedance sensor interface and battery-powered instrumentation requiring wide 2.7 V to 12 V supply operation.
For engineers reviewing the LMP7704MTX datasheet, LMP7704MTX pinout, LMP7704MTX application, or LMP7704MTX equivalent, key selection criteria include its guaranteed low offset drift (±1 µV/°C), rail-to-rail output swing within 40 mV of rails at 3 V, 130 dB CMRR, and SOIC-14 package compatibility with space-constrained PCB layouts in precision analog signal chains.
Technical Context
The LMP7704MTX employs VIP50 CMOS process technology to achieve simultaneous rail-to-rail input common-mode range (–0.2 V to VS + 0.2 V) and output swing (within 40 mV of both rails), while maintaining 130 dB open-loop gain and 130 dB CMRR across –40°C to +125°C. Its complementary input stage is laser-trimmed to minimize CMRR glitches typical of rail-to-rail amplifiers.
Each of the four independent amplifiers delivers 2.5 MHz gain-bandwidth product, 1 V/µs slew rate (at ±5 V), and 9 nV/√Hz input voltage noise at 1 kHz-enabling stable unity-gain operation and low-noise signal conditioning in single-supply configurations down to 2.7 V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Offset Voltage | ±220 µV max - ensures ≤0.5 mV error in 100-mV full-scale sensor outputs without trimming |
| Input Bias Current | ±200 fA typ - enables use with >1 GΩ source impedances (e.g., piezoelectric sensors) |
| Supply Voltage Range | 2.7 V to 12 V - supports direct operation from single Li-ion (3.0–4.2 V) or dual AA (3.0 V) batteries |
| CMRR | 130 dB min - rejects >3.16 MV/V common-mode interference in noisy industrial environments |
| Output Swing (3 V) | Within 40 mV of rails - preserves >93% dynamic range in low-voltage data acquisition systems |
| Unity-Gain Bandwidth | 2.5 MHz - allows stable amplification of signals up to ~200 kHz with 10× gain margin |
| Operating Temperature | –40°C to +125°C - qualified for under-hood automotive and industrial control applications |
Pinout & Package
Package: SOIC-14 (3.91 mm × 8.65 mm, body size nominal), RoHS-compliant, moisture sensitivity level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUT A | Amplifier A output - drives external load or next-stage input with rail-to-rail capability |
| 2 | IN A– | Inverting input for Amplifier A - accepts feedback network or differential signal reference |
| 3 | IN A+ | Noninverting input for Amplifier A - connects to high-impedance sensor node or reference voltage |
| 4 | V+ | Positive supply rail - accepts 2.7–12 V DC; decoupling capacitor required at pin |
| 5 | IN B+ | Noninverting input for Amplifier B - electrically isolated from other channels for multi-sensor use |
| 6 | IN B– | Inverting input for Amplifier B - supports independent gain-setting resistor network |
| 7 | OUT B | Amplifier B output - provides second independent buffered signal path |
| 8 | OUT C | Amplifier C output - enables three-channel simultaneous signal conditioning on one IC |
| 9 | IN C– | Inverting input for Amplifier C - referenced to local ground or virtual ground |
| 10 | IN C+ | Noninverting input for Amplifier C - accepts third sensor or reference signal |
| 11 | V– | Negative supply rail - tied to ground in single-supply mode; supports ±5 V operation |
| 12 | IN D+ | Noninverting input for Amplifier D - completes quad-channel architecture for 4-signal systems |
| 13 | IN D– | Inverting input for Amplifier D - enables fourth independent closed-loop configuration |
| 14 | OUT D | Amplifier D output - delivers fourth buffered analog output with matched specs |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input and output | Common-mode range extends 0.2 V beyond rails; output swings to within 40 mV of V+ and V− - maximizes usable signal headroom in low-voltage systems |
| Ultra-low input bias current | ±200 fA typical - prevents loading errors in high-Z pH electrodes, photodiode transimpedance stages, and piezoelectric interfaces |
| Laser-trimmed input offset | ±220 µV maximum over temperature - eliminates need for external nulling in precision medical and test equipment front-ends |
| Wide supply range | Operates from 2.7 V to 12 V - supports direct integration into portable, automotive, and industrial power domains without LDOs |
| High CMRR and PSRR | 130 dB CMRR / 86 dB PSRR - maintains accuracy in electrically noisy environments with fluctuating supplies |
Applications
| High-Impedance Sensor Interface | Battery-Powered Instrumentation |
|---|---|
Use Scenario: Signal conditioning for pH electrode (GΩ impedance) in handheld water quality meter. IC Role / Device Role / Timing Role: Quad amplifier configures as 4-channel buffer, reference follower, I/V converter, and filter driver. Use Value: ±200 fA bias current prevents electrode polarization; rail-to-rail output delivers full 0–3.3 V ADC range from 3-V supply. |
Use Scenario: Multi-sensor data logger powered by two AA cells (3.0 V nominal). IC Role / Device Role / Timing Role: Four independent amplifiers condition thermistor, humidity, pressure, and battery voltage signals. Use Value: 2.9 mA total quiescent current extends battery life; 2.7–12 V range accommodates full discharge curve without regulation. |
| DAC Output Buffering | Instrumentation Amplifier Front-End |
Use Scenario: Driving 12-bit DAC output to 10-kΩ load in programmable current source. IC Role / Device Role / Timing Role: Unity-gain buffer isolates DAC from load, preserving linearity and settling time. Use Value: 130 dB open-loop gain ensures <0.001% gain error; 40-mV rail margin avoids clipping at 3-V full scale. |
Use Scenario: First-stage gain block in 3-op-amp in-amp for strain gauge bridge measurement. IC Role / Device Role / Timing Role: Two amplifiers implement matched input buffers; third handles difference amplification. Use Value: Matched offset and drift (<±1 µV/°C) between channels minimizes common-mode error; 130 dB CMRR rejects bridge excitation noise. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA2188AIDR | Single-supply, zero-drift architecture; 0.03 µV/°C max drift vs. LMP7704MTX's ±1 µV/°C | Superior long-term stability for metrology; higher cost and 1.3 mA/channel supply current | Select when ultra-low drift dominates over quiescent power and channel count |
| AD8604ARUZ | Quad RRIO op-amp; 600 µV max offset (vs. 220 µV); 50 pA bias current (vs. 200 fA) | Lower cost; suitable for general-purpose buffering but not for >100-MΩ sensor nodes | Select for cost-sensitive, moderate-precision applications where ultra-low bias current is unnecessary |
Compared with OPA2188AIDR and AD8604ARUZ, the LMP7704MTX uniquely balances ultra-low bias current (200 fA), quad-channel density in SOIC-14, and 2.7–12 V operation-making it optimal for multi-sensor, battery-powered, high-impedance analog front-ends where leakage and supply flexibility are critical.
Availability
LMP7704MTX is available at Aetrix Electronics and suitable for high-impedance sensor interface, battery-powered instrumentation, and precision DAC buffering requiring stable component supply across industrial temperature ranges and long production lifecycles.
Supply support for LMP7704MTX 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
Texas Instruments is a global semiconductor leader specializing in analog and embedded processing technologies, with decades of expertise in precision signal chain solutions.
The LMP7704MTX belongs to TI's LMP™ precision amplifier family, engineered specifically for sensor interface and instrumentation applications demanding ultra-low input bias current, rail-to-rail operation, and wide supply voltage tolerance.
FAQ
What is the maximum input offset voltage specification for LMP7704MTX over temperature?
The LMP7704MTX has a maximum input offset voltage of ±220 µV across the full operating temperature range of –40°C to +125°C, as specified in the Electrical Characteristics tables for 3-V, 5-V, and ±5-V supply conditions. This value is production-tested and guaranteed, ensuring predictable DC accuracy in precision analog designs without calibration.
Does LMP7704MTX support true rail-to-rail input common-mode range?
Yes, the LMP7704MTX supports rail-to-rail input with a common-mode voltage range extending from (V– – 0.2 V) to (V+ + 0.2 V). At 3 V supply, this means –0.2 V to 3.2 V; at ±5 V, it covers –5.2 V to +5.2 V. This is enabled by its complementary CMOS input stage and laser trimming, eliminating the CMRR glitches common in competing rail-to-rail amplifiers.
What is the typical supply current per amplifier in LMP7704MTX at 5 V?
At VS = 5 V, the LMP7704MTX draws 2.9 mA typical total supply current, which equates to 725 µA per amplifier channel. The datasheet specifies 2.9 mA to 3.7 mA maximum across temperature, confirming consistent low-power operation ideal for quad-channel battery-powered systems.
Can LMP7704MTX drive a 2-kΩ load while maintaining rail-to-rail output swing?
Yes - the LMP7704MTX delivers rail-to-rail output swing even into 2-kΩ loads. At 3 V supply, output voltage swing is specified as within 120 mV of V+ and 90 mV of V– (high-side and low-side, respectively); at 5 V, it improves to within 110 mV and 90 mV. These values are measured with RL = 2 kΩ to V+/2, confirming robust drive capability.
Is LMP7704MTX pin-compatible with other quad op-amps in SOIC-14 packages?
No - the LMP7704MTX uses a proprietary pinout optimized for quad-channel independence: pins 1/7/8/14 are outputs, pins 2/3/5/6/9/10/12/13 are inputs, and pins 4 (V+) and 11 (V–) are shared supplies. It is not pin-compatible with generic SOIC-14 quad op-amps like LM324 or TL084; PCB layout must follow TI's LMP7704-specific footprint.
LMP7704MTX Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 14-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 4
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 1.1V/µs
- Gain Bandwidth Product:
- 2.5 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 0.2 pA
- Voltage - Input Offset:
- 37 µV
- Current - Supply:
- 3.2mA (x4 Channels)
- Current - Output / Channel:
- 86 mA
- Voltage - Supply Span (Min):
- 2.7 V
- Voltage - Supply Span (Max):
- 12 V
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-TSSOP
LMP7704MTX FAQ
1.How can I place an order for LMP7704MTX through Aetrix?
Please submit a Request for Quotation (RFQ) for LMP7704MTX 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 LMP7704MTX reliable?
The price and inventory of LMP7704MTX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LMP7704MTX is usually 5 days.
3.What payment methods are accepted for LMP7704MTX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LMP7704MTX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LMP7704MTX?
LMP7704MTX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LMP7704MTX 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 LMP7704MTX?
For technical support, including LMP7704MTX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LMP7704MTX requirements.
6.How does Aetrix verify that LMP7704MTX is sourced from the original manufacturer or authorized distributors?
All LMP7704MTX 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 LMP7704MTX meets industry standards.
7.What is the process for return or replacement of LMP7704MTX?
All LMP7704MTX units undergo pre-shipment inspection (PSI). If there is an issue with LMP7704MTX, 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 LMP7704MTX part is unused and in its original packaging.
Return procedure for LMP7704MTX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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