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Texas Instruments LMP7709MTX/NOPB
- Part No.:
- LMP7709MTX/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
LMP7709MTX/NOPB.pdf
- Description:
- IC OPAMP GP 4 CIRCUIT 14TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,322
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Product details
Overview
LMP7709MTX/NOPB from Texas Instruments is a quad-channel, decompensated, rail-to-rail input/output precision operational amplifier with CMOS input stage, ±220 µV max input offset voltage, 9 nV/√Hz input voltage noise, and 14 MHz gain bandwidth product at AV = 10. It operates from 2.7 V to 12 V supply and supports −40°C to +125°C industrial temperature range - ideal for high-accuracy sensor interface and battery-powered instrumentation.
For engineers reviewing the LMP7709MTX/NOPB datasheet, LMP7709MTX/NOPB pinout, LMP7709MTX/NOPB application, or LMP7709MTX/NOPB equivalent, key selection criteria include guaranteed low input bias current (±200 fA), rail-to-rail output swing within 40 mV of rails, stability at gain ≥6, and TSSOP-14 packaging for space-constrained PCBs in precision analog signal chains.
Technical Context
The LMP7709MTX/NOPB uses VIP50 CMOS process technology to achieve ultra-low input bias current while maintaining wide 2.7 V–12 V supply operation and rail-to-rail common-mode input range. Its decompensated architecture delivers higher bandwidth and slew rate (5.6 V/µs at ±5 V) than unity-gain-stable equivalents without increased supply current.
Each of its four amplifiers features independently trimmed NMOS/PMOS input pairs to minimize CMRR glitches near supply rails, and achieves 130 dB CMRR and PSRR across full common-mode range. The device requires minimum closed-loop gain of 6 for stable operation and is not unity-gain stable.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Channels | Quad - enables compact multi-stage signal conditioning or independent channel processing in single-package layout. |
| Input Offset Voltage (max) | ±220 µV over −40°C to +125°C - ensures <0.022% error in 1 V full-scale measurements without trimming. |
| Gain Bandwidth Product | 14 MHz at AV = 10 - supports stable 10× amplification up to ~1.4 MHz with minimal phase margin degradation. |
| Supply Current per Channel | 2.9 mA at 5 V - total 11.6 mA for all four channels, enabling low-power precision operation in portable systems. |
| Input Bias Current | ±200 fA typical at 25°C - critical for high-impedance pH, piezoelectric, or photodiode sensor interfaces. |
| Rail-to-Rail I/O | Input CMVR: −0.2 V to V+ + 0.2 V; Output swing: within 40 mV of either rail - maximizes dynamic range at low supply voltages. |
| Stability Condition | Stable only at closed-loop gain ≥6 - requires external gain-setting resistors ≥5:1 ratio to avoid oscillation. |
Pinout & Package
Package: 14-pin TSSOP (PW package), 5.0 mm × 4.4 mm × 1.2 mm body, 0.65 mm pitch - optimized for automated assembly and thermal performance in dense layouts.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Inverting Input (Ch A) | High-impedance CMOS node; connects to feedback network for inverting configurations. |
| 2 | Non-Inverting Input (Ch A) | High-impedance CMOS node; accepts high-Z sensor signals with minimal loading. |
| 3 | Output (Ch A) | Capable of sourcing/sinking >40 mA short-circuit current; drives 2 kΩ load to within 40 mV of rails. |
| 4 | V− (GND for single-supply) | Power ground reference; must be low-impedance return path for all four channels. |
| 5 | Inverting Input (Ch B) | Independent high-Z input for second channel; electrically isolated from Ch A per datasheet layout guidelines. |
| 6 | Non-Inverting Input (Ch B) | Second high-Z input; shares V− and V+ with other channels but has dedicated input terminals. |
| 7 | Output (Ch B) | Dedicated output; supports independent loading and routing without crosstalk impact on Ch A/C/D. |
| 8 | V+ | Positive supply rail; accepts 2.7 V–12 V; decoupling capacitor required within 1 cm of pin. |
| 9 | Inverting Input (Ch C) | Third channel input; identical electrical specs to Ch A/B; validated for simultaneous use in multi-channel filters. |
| 10 | Non-Inverting Input (Ch C) | Third high-Z input; supports matched-pair configurations with Ch D for differential front-ends. |
| 11 | Output (Ch C) | Third output; maintains 130 dB CMRR and 9 nV/√Hz noise when driven into 10 kΩ load. |
| 12 | Inverting Input (Ch D) | Fourth channel input; fully characterized across −40°C to +125°C per production test limits. |
| 13 | Non-Inverting Input (Ch D) | Fourth high-Z input; enables 4-channel programmable gain instrumentation amplifier topologies. |
| 14 | Output (Ch D) | Fourth output; specified for 120 mV output swing low from V+ at 10 kΩ load, 5 V supply, 125°C. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low input bias current | ±200 fA typical enables direct connection to >1 GΩ source impedances without significant offset drift. |
| Trimmed complementary input stage | Reduces CMRR glitch near rails by balancing NMOS/PMOS offset mismatch - verified across full temperature range. |
| Wide supply range (2.7 V–12 V) | Supports single 3.3 V, dual ±5 V, or high-voltage 12 V operation without redesigning power domain. |
| Low input voltage noise | 9 nV/√Hz at 1 kHz allows sub-µV signal amplification in medical ECG or strain gauge front-ends. |
| Guaranteed stability at AV ≥ 6 | Enables higher closed-loop bandwidth than unity-gain-stable op-amps with same supply current and noise floor. |
Applications
| High-Impedance Sensor Interface | Battery-Powered Instrumentation |
|---|---|
Use Scenario: Amplifying output of pH electrode or piezoelectric vibration sensor with source impedance >100 MΩ. IC Role / Device Role / Timing Role: Precision DC-coupled transimpedance or non-inverting amplifier with minimal input current error. Use Value: ±200 fA bias current prevents >20 mV offset error at 100 MΩ source, preserving measurement accuracy. |
Use Scenario: Signal conditioning in handheld multimeter or portable gas detector operating from coin cell. IC Role / Device Role / Timing Role: Low-quiescent-current quad amplifier for multi-channel analog front-end with rail-to-rail output swing. Use Value: 2.9 mA per channel enables 4-channel operation under 12 mA total, extending battery life in 3.3 V systems. |
| DAC Buffer | Active Filters |
Use Scenario: Driving 12-bit to 16-bit DAC output to maintain monotonicity and settle within 1 µs. IC Role / Device Role / Timing Role: Unity-gain stable buffer (configured at AV = 1 with external compensation) for voltage reference scaling. Use Value: 14 MHz GBWP ensures <0.01% gain error at 100 kHz, supporting high-speed DAC update rates. |
Use Scenario: Implementing 4-pole Sallen-Key or MFB filter in data acquisition system requiring <0.1 dB passband ripple. IC Role / Device Role / Timing Role: Quad-channel building block for cascaded 2nd-order stages with matched AC response. Use Value: 130 dB CMRR and 9 nV/√Hz noise preserve SNR in anti-aliasing and reconstruction filters up to 1 MHz. |
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 | Unity-gain stable, lower 5.6 nV/√Hz noise, but higher 850 µA/channel supply current and ±25 µV max VOS. | Suitable for unity-gain buffering and low-noise audio; not optimal for high-gain (>10×), low-power sensor front-ends. | Select when unity-gain stability is mandatory and noise budget is tighter than power budget. |
| ADA4522-4ARUZ | Zero-drift architecture, 0.3 µV max VOS, but 1.2 mA/channel supply current and limited 3 MHz GBWP. | Better for DC-critical applications like weigh scales; insufficient bandwidth for >100 kHz active filtering. | Select when ultra-low drift dominates over bandwidth and quiescent current requirements. |
Compared with OPA2188AIDR and ADA4522-4ARUZ, the LMP7709MTX/NOPB delivers superior bandwidth-per-mA (1.2 MHz/mA) and best-in-class input bias current for high-Z sensors, while requiring minimum gain ≥6 - making it optimal for gain-fixed, low-power, wide-bandwidth precision signal chains.
Availability
LMP7709MTX/NOPB is available at Aetrix Electronics and suitable for high-impedance sensor interface, battery-powered instrumentation, and active filter design requiring stable component supply across automotive, industrial, and medical OEM programs.
Supply support for LMP7709MTX/NOPB 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 precision amplifier innovation and broad industrial qualification.
The LMP™ precision amplifier family - including the LMP7709MTX/NOPB - was designed for high-accuracy signal conditioning in sensor interfaces, portable instrumentation, and industrial control systems demanding low offset, ultra-low bias current, and rail-to-rail operation.
FAQ
Is LMP7709MTX/NOPB unity-gain stable?
No, the LMP7709MTX/NOPB is decompensated and requires a minimum closed-loop gain of 6 for stable operation. Attempting unity-gain configuration without external compensation will cause oscillation. For unity-gain applications, consider adding a series isolation resistor (RISO) and capacitive feedback network per Figure 45 in the datasheet, or select a unity-gain-stable alternative such as OPA2188AIDR. The LMP7709MTX/NOPB's gain-bandwidth trade-off prioritizes speed and low power over unconditional stability.
What is the maximum capacitive load LMP7709MTX/NOPB can drive directly?
The LMP7709MTX/NOPB is not optimized for heavy capacitive loads. Driving >100 pF directly risks instability due to phase margin reduction. For loads exceeding 100 pF - such as ADC input capacitors or long PCB traces - TI recommends using an isolation resistor (RISO) between the LMP7709MTX/NOPB output and the load capacitance, as shown in Figure 45. Typical RISO values range from 10 Ω to 100 Ω depending on CL and required settling time. The LMP7709MTX/NOPB itself does not specify a maximum safe CL without compensation.
Does LMP7709MTX/NOPB support true split-supply operation?
Yes, the LMP7709MTX/NOPB supports dual-supply operation from ±2.7 V to ±6 V (i.e., total supply 5.4 V to 12 V), with full rail-to-rail input common-mode range extending to within 200 mV of either rail. Electrical characteristics in the ±5 V section of the datasheet (pages 5–7) confirm operation at V+ = 5 V, V− = −5 V, including 138 dB CMRR and 15 MHz GBWP. This makes the LMP7709MTX/NOPB suitable for bipolar signal conditioning in industrial PLC analog I/O modules.
How does input offset voltage drift behave over temperature for LMP7709MTX/NOPB?
The LMP7709MTX/NOPB has a guaranteed input offset voltage drift of ±5 µV/°C maximum over −40°C to +125°C, with typical performance near ±1 µV/°C. Figure 7 in the datasheet shows tight TCVOS distribution centered at ~0 µV/°C. This low drift ensures that offset remains below ±1.1 mV over full temperature range (165°C span × 5 µV/°C = ±825 µV), well within the ±220 µV max VOS specification - critical for uncalibrated systems operating across wide ambient conditions.
Can LMP7709MTX/NOPB replace LMP7708 in a dual-amplifier design?
No - the LMP7709MTX/NOPB is a quad-channel device in 14-pin TSSOP, while the LMP7708 is dual-channel in 8-pin SOIC or VSSOP. Pin count, footprint, and channel count are incompatible. However, two LMP7709MTX/NOPB devices can implement four LMP7708-equivalent channels with shared supply pins, provided board area and thermal dissipation allow. For drop-in replacement, use LMP7708MM/NOPB (VSSOP-8) or LMP7708MA/NOPB (SOIC-8). The LMP7709MTX/NOPB shares identical per-channel specifications with the LMP7708, including ±220 µV VOS max and 2.9 mA/channel supply current.
LMP7709MTX/NOPB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- LMP®
- 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:
- 5.9V/µs
- Gain Bandwidth Product:
- 15 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 0.2 pA
- Voltage - Input Offset:
- 37 µV
- Current - Supply:
- 2.9mA (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
LMP7709MTX/NOPB FAQ
1.How can I place an order for LMP7709MTX/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LMP7709MTX/NOPB 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 LMP7709MTX/NOPB reliable?
The price and inventory of LMP7709MTX/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LMP7709MTX/NOPB is usually 5 days.
3.What payment methods are accepted for LMP7709MTX/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LMP7709MTX/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LMP7709MTX/NOPB?
LMP7709MTX/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LMP7709MTX/NOPB 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 LMP7709MTX/NOPB?
For technical support, including LMP7709MTX/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LMP7709MTX/NOPB requirements.
6.How does Aetrix verify that LMP7709MTX/NOPB is sourced from the original manufacturer or authorized distributors?
All LMP7709MTX/NOPB 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 LMP7709MTX/NOPB meets industry standards.
7.What is the process for return or replacement of LMP7709MTX/NOPB?
All LMP7709MTX/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LMP7709MTX/NOPB, 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 LMP7709MTX/NOPB part is unused and in its original packaging.
Return procedure for LMP7709MTX/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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