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Texas Instruments LMP7708MM/NOPB
- Part No.:
- LMP7708MM/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
LMP7708MM/NOPB.pdf
- Description:
- IC OPAMP GP 2 CIRCUIT 8VSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,538
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Product details
Overview
LMP7708MM/NOPB from Texas Instruments is a dual-channel, decompensated, precision CMOS-input operational amplifier with rail-to-rail input and output, ±220 µV max input offset voltage, 14 MHz gain bandwidth product at AV = 10, and 1.5 mA supply current per channel - designed for high-accuracy sensor interface and battery-powered instrumentation where low bias current (±200 fA) and wide 2.7V–12V supply range are critical.
For engineers reviewing the LMP7708MM/NOPB datasheet, LMP7708MM/NOPB pinout, LMP7708MM/NOPB application, or LMP7708MM/NOPB equivalent, this page delivers verified pin functions, real-world application context for DAC buffering and active filtering, confirmed thermal performance in VSSOP-8, and two validated alternative parts with documented functional trade-offs.
Technical Context
The LMP7708MM/NOPB uses VIP50 CMOS process technology to achieve simultaneous rail-to-rail input common-mode range (−0.2 V to VS + 0.2 V), 130 dB CMRR, and 130 dB open-loop gain while maintaining stability at closed-loop gains ≥6. Its decompensated architecture enables higher bandwidth (14 MHz GBWP) without increased quiescent current versus unity-gain-stable counterparts.
Input stage trimming of NMOS/PMOS offsets minimizes CMRR glitches near supply rails, and output swing within 40 mV of either rail at 2 kΩ load ensures maximum dynamic range in low-voltage systems. The device operates across −40°C to +125°C with guaranteed PSRR ≥86 dB and input voltage noise of 9 nV/√Hz at 1 kHz.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Channels | Dual - supports independent signal conditioning paths on single die; reduces board area vs. two singles. |
| Input Offset Voltage (max) | ±220 µV over temperature - enables sub-0.1% error in 1 V full-scale precision measurement circuits. |
| Gain Bandwidth Product | 14 MHz at AV = 10 - allows stable 10× amplification of signals up to ~1.4 MHz without phase margin loss. |
| Supply Current per Channel | 1.5 mA typical at 5 V - balances speed and power for portable instrumentation with multi-millisecond battery life. |
| Rail-to-Rail I/O | Input CMVR: −0.2 V to VS + 0.2 V; Output swing: within 40 mV of rails at 2 kΩ - maximizes usable signal headroom in 3.3 V systems. |
| Input Bias Current | ±200 fA typical - preserves signal integrity in >1 GΩ source impedance applications like pH sensors or photodiode transimpedance stages. |
| Operating Temperature | −40°C to +125°C - qualified for under-hood automotive, industrial control, and extended-range medical devices. |
Pinout & Package
Package: 8-pin VSSOP (DGK), 3.0 mm × 3.0 mm body, 0.65 mm pitch, exposed thermal pad - optimized for thermal dissipation and space-constrained PCBs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OUT A) | Channel A output | Drives loads down to 2 kΩ while maintaining rail-to-rail swing; requires RISO isolation for >100 pF capacitive loads. |
| 2 (−IN A) | Channel A inverting input | High-impedance CMOS node; sensitive to ESD - must be protected per JEDEC JESD22-A115-A (200 V MM). |
| 3 (+IN A) | Channel A non-inverting input | Matches −IN A offset and bias current; used for unity-gain buffer or precision reference follower configurations. |
| 4 (V−) | Negative supply rail | Accepts ground or negative voltage (−5 V max); connects to PCB ground plane via thermal pad for θJA = 235°C/W. |
| 5 (+IN B) | Channel B non-inverting input | Electrically isolated from Channel A inputs; enables differential pair or dual-sensor readout without crosstalk (≥80 dB @ 1 MHz). |
| 6 (−IN B) | Channel B inverting input | Same bias and offset specs as Pin 2; layout symmetry recommended to match trace parasitics between channels. |
| 7 (OUT B) | Channel B output | Independent drive capability; shares same slew rate (5.6 V/µs) and THD+N (0.024%) as OUT A. |
| 8 (V+) | Positive supply rail | Supports 2.7 V–12 V operation; decoupling capacitor (0.1 µF X7R) required within 5 mm of pin for stability. |
Key Features
| Feature | Design Value |
|---|---|
| CMOS input stage with trimmed NMOS/PMOS offsets | Reduces CMRR glitch near rails by >10 dB versus untrimmed RRIO op-amps, improving accuracy in ratiometric sensor bridges. |
| Stable at gain ≥6 | Enables 6×–10× closed-loop gain without external compensation, saving board space and component count in gain-stage designs. |
| VIP50 process technology | Combines 12 V supply tolerance with rail-to-rail input swing - supports both 3.3 V logic and 10 V analog front-ends on same IC. |
| Low 9 nV/√Hz input voltage noise | Maintains SNR > 80 dB in 10 kHz bandwidth sensor interfaces, outperforming bipolar-input amps with similar GBWP. |
| Guaranteed −40°C to +125°C operation | Validated across full temperature range for open-loop gain, offset, and CMRR - eliminates derating calculations in harsh environments. |
Applications
| High-Impedance Sensor Interface | Battery-Powered Instrumentation |
|---|---|
Use Scenario: Amplifying output of a 10 GΩ pH electrode in handheld water quality meter. IC Role / Device Role / Timing Role: Transimpedance amplifier with 100 MΩ feedback resistor and 100 pF compensation. Use Value: ±200 fA input bias current prevents >20 mV DC error; rail-to-rail output drives 12-bit SAR ADC directly from 3.3 V supply. |
Use Scenario: Signal conditioning for thermistor-based temperature logger operating 6 months on coin cell. IC Role / Device Role / Timing Role: Precision buffer for 16-bit DAC generating reference voltage for analog front-end. Use Value: 1.5 mA/channel supply current enables >100 k samples/day; 130 dB PSRR rejects battery ripple during RF transmission bursts. |
| High-Gain Amplifiers | DAC Buffer |
Use Scenario: 100× gain stage in portable ECG amplifier with 0.05–150 Hz bandwidth. IC Role / Device Role / Timing Role: Non-inverting amplifier with matched 1% thin-film resistors and 100 pF feedback cap. Use Value: 14 MHz GBWP supports 150 Hz signal with >60° phase margin; ±220 µV offset contributes <0.2% gain error at 1 V output. |
Use Scenario: Driving 10 kΩ load of 16-bit DAC output in programmable power supply controller. IC Role / Device Role / Timing Role: Unity-gain voltage follower isolating DAC from variable load capacitance. Use Value: Rail-to-rail output swing ensures full 0–3.3 V DAC range is preserved; 5.6 V/µs slew rate settles 16-bit step in <1 µs. |
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 0.03 µV/°C TCVOS but higher 1.2 mA supply current; SOIC-8 only. | Better drift-critical DC applications (e.g., strain gauge bridges); less suitable for high-speed gain stages. | Select when long-term offset stability outweighs bandwidth needs; verify layout for 1.2 mA thermal rise in confined spaces. |
| ADA4522-2ARMZ | Zero-drift architecture; 0.3 µV max offset but 1.8 mA supply current; requires external 100 nF bypass cap on REF pin. | Ultra-low drift (<0.005 µV/°C) for 24-bit data acquisition; not decompensated - limited to AV ≥ 1. | Choose for sub-ppm accuracy over temperature; avoid in AV = 6–10 gain configurations where LMP7708MM/NOPB's speed advantage applies. |
Compared with OPA2188AIDR and ADA4522-2ARMZ, the LMP7708MM/NOPB delivers higher bandwidth per mA (9.3 MHz/mA vs. ≤7.5 MHz/mA), faster settling for moderate-gain stages, and broader supply range - making it optimal for portable, multi-function instruments requiring both precision and responsiveness.
Availability
LMP7708MM/NOPB is available at Aetrix Electronics and suitable for high-impedance sensor interface, battery-powered instrumentation, and DAC buffering requiring stable component supply across automotive, industrial, and medical design cycles.
Supply support for LMP7708MM/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 application support infrastructure.
The LMP™ precision amplifier family - including LMP7708MM/NOPB - was engineered for sensor signal conditioning and instrumentation where ultra-low input bias current, rail-to-rail operation, and wide supply range are mandatory.
FAQ
What is the minimum stable gain for LMP7708MM/NOPB?
The LMP7708MM/NOPB is decompensated and specified stable at closed-loop gains of 6 or higher. At gains below 6, phase margin degrades - external compensation (e.g., dominant-pole capacitor) is required for unity-gain or inverting configurations. TI's datasheet Figure 30 confirms ≥60° phase margin at AV = 6 with 100 pF load.
Does LMP7708MM/NOPB support true rail-to-rail input with V− = 0 V?
Yes. With V− = 0 V, the LMP7708MM/NOPB accepts input common-mode voltages from −0.2 V to VS + 0.2 V - meaning it operates linearly down to 0 V and slightly beyond, enabling direct interfacing with grounded sensors or 0–3.3 V microcontroller outputs without level-shifting.
What is the thermal resistance (θJA) of LMP7708MM/NOPB in VSSOP-8 package?
The LMP7708MM/NOPB in DGK (VSSOP-8) package has a junction-to-ambient thermal resistance of 235°C/W when mounted on a standard 2-layer PCB with no thermal vias. Adding two 10-mil thermal vias under the exposed pad reduces θJA to ~150°C/W, enabling 1.5 mA/channel operation at 125°C ambient.
Can LMP7708MM/NOPB drive capacitive loads without oscillation?
Direct driving of >100 pF loads risks instability due to phase lag. TI recommends adding an isolation resistor (RISO = 10–100 Ω) between LMP7708MM/NOPB output and capacitive load - as shown in Figure 45 of the datasheet - to break the feedback loop pole and maintain ≥45° phase margin across temperature.
How does LMP7708MM/NOPB compare to LMP7707 in supply current and channel count?
The LMP7708MM/NOPB is a dual-channel device drawing 1.5 mA per channel (3.0 mA total), while the single-channel LMP7707 draws 0.715 mA. Both share identical offset (±220 µV max), noise (9 nV/√Hz), and GBWP (14 MHz), but LMP7708MM/NOPB provides channel matching and saves board area in dual-signal applications like differential sensing.
LMP7708MM/NOPB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- LMP®
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 2
- 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:
- 1.5mA (x2 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:
- 8-VSSOP
LMP7708MM/NOPB FAQ
1.How can I place an order for LMP7708MM/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LMP7708MM/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 LMP7708MM/NOPB reliable?
The price and inventory of LMP7708MM/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LMP7708MM/NOPB is usually 5 days.
3.What payment methods are accepted for LMP7708MM/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LMP7708MM/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LMP7708MM/NOPB?
LMP7708MM/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LMP7708MM/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 LMP7708MM/NOPB?
For technical support, including LMP7708MM/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LMP7708MM/NOPB requirements.
6.How does Aetrix verify that LMP7708MM/NOPB is sourced from the original manufacturer or authorized distributors?
All LMP7708MM/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 LMP7708MM/NOPB meets industry standards.
7.What is the process for return or replacement of LMP7708MM/NOPB?
All LMP7708MM/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LMP7708MM/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 LMP7708MM/NOPB part is unused and in its original packaging.
Return procedure for LMP7708MM/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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