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Texas Instruments LMP7708MMX/NOPB
- Part No.:
- LMP7708MMX/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
LMP7708MMX/NOPB.pdf
- Description:
- IC OPAMP GP 2 CIRCUIT 8VSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,343
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Product details
Overview
LMP7708MMX/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 requiring wide 2.7V–12V supply operation and −40°C to +125°C temperature range.
For engineers reviewing the LMP7708MMX/NOPB datasheet, LMP7708MMX/NOPB pinout, LMP7708MMX/NOPB application, or LMP7708MMX/NOPB equivalent, key selection considerations include its decompensated stability (gain ≥ 6), ultra-low 200 fA input bias current, 9 nV/√Hz input voltage noise, rail-to-rail swing within 40 mV of rails, and VSSOP-8 packaging optimized for space-constrained PCBs.
Technical Context
The LMP7708MMX/NOPB employs VIP50 CMOS process technology to integrate a high-impedance input stage with wide supply tolerance (2.7V–12V) and true rail-to-rail common-mode input range (−0.2V to VS + 0.2V). Its decompensated architecture delivers enhanced bandwidth and slew rate (5.6 V/µs at ±5V) without increased quiescent current.
It achieves 130 dB CMRR and PSRR via matched NMOS/PMOS input trimming, minimizing rail-to-rail CMRR glitches. Output stage drives loads down to 2 kΩ while maintaining <120 mV output swing from either rail at 5V supply, supporting low-voltage signal chain fidelity in precision analog front-ends.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Offset Voltage | ±220 µV (max) over −40°C to +125°C - ensures ≤0.55 mV error in 2.5V full-scale 12-bit systems |
| Gain Bandwidth Product | 14 MHz at AV = 10 - enables stable 10× amplification up to ~1.4 MHz with minimal phase margin loss |
| Input Bias Current | ±200 fA (typ) at 25°C - preserves signal integrity in >1 GΩ sensor impedance interfaces |
| Supply Voltage Range | 2.7V to 12V - supports single-supply 3.3V/5V microcontrollers and dual-supply ±5V instrumentation |
| Rail-to-Rail Output Swing | Within 40 mV of V+ and V− at RL = 10 kΩ - maximizes dynamic range in low-voltage data acquisition |
| CMRR | 130 dB (min) - rejects >3.16 million:1 common-mode interference in differential sensing |
| Operating Temperature | −40°C to +125°C - qualified for automotive under-hood and industrial control environments |
Pinout & Package
Package: 8-pin VSSOP (DGK), 2.3 mm × 2.0 mm footprint, 0.5 mm pitch, exposed thermal pad (not electrically connected).
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Inverting Input (Channel A) | High-impedance CMOS node; connects to feedback network in inverting configurations |
| 2 | Non-Inverting Input (Channel A) | High-impedance CMOS node; accepts low-current sensor signals without loading |
| 3 | Output (Channel A) | Class-AB rail-to-rail output capable of sourcing/sinking ≥40 mA short-circuit current |
| 4 | V− (Negative Supply) | Ground reference for single-supply use or negative rail in dual-supply systems |
| 5 | V+ (Positive Supply) | Accepts 2.7V–12V; internal regulation enables stable operation across wide input range |
| 6 | Non-Inverting Input (Channel B) | Independent high-Z input for second signal path; no crosstalk with Channel A (≥120 dB @ 1 kHz) |
| 7 | Inverting Input (Channel B) | Matched to Pin 1; supports dual-channel instrumentation amplifier topologies |
| 8 | Output (Channel B) | Independent rail-to-rail output; shares V+ and V− with Channel A but maintains isolation |
Key Features
| Feature | Design Value |
|---|---|
| Decompensated Stability | Stable at closed-loop gain ≥6 - trades unity-gain capability for 2.3× higher bandwidth vs. compensated equivalents |
| Ultra-Low Input Bias Current | ±200 fA typical - eliminates leakage-induced offset in pH, photodiode, and piezoelectric sensor interfaces |
| Rail-to-Rail Input Common-Mode Range | Extends 0.2 V beyond rails - enables direct interfacing to 0–3.3V ADC references without level-shifting |
| Low Input Voltage Noise | 9 nV/√Hz at 1 kHz - preserves SNR in low-level signal amplification (e.g., thermocouple, strain gauge) |
| VIP50 Process Integration | Combines CMOS input with 12V supply tolerance - eliminates need for external level shifters in mixed-voltage systems |
Applications
| High-Impedance Sensor Interface | Battery-Powered Instrumentation |
|---|---|
Use Scenario: Amplifying output of a 10 GΩ piezoresistive pressure sensor in portable medical device. IC Role / Device Role / Timing Role: Precision DC-coupled gain stage with minimal input loading and rail-to-rail output swing. Use Value: 200 fA bias current prevents >2 mV offset drift; 40 mV output headroom enables full 3.0V ADC range utilization at 3.3V supply. |
Use Scenario: Signal conditioning for 16-bit SAR ADC in handheld multimeter powered by two AA cells. IC Role / Device Role / Timing Role: Dual-channel buffer and programmable gain amplifier operating from 2.7V–3.6V supply. Use Value: 1.5 mA/channel supply current extends battery life; −40°C to +125°C rating ensures field reliability across climates. |
| High-Gain Amplifiers | DAC Buffer |
Use Scenario: 100× gain stage for thermopile IR sensor with 10 µV output in HVAC occupancy detector. IC Role / Device Role / Timing Role: Stable decompensated op-amp configured as non-inverting amplifier with gain = 100. Use Value: 14 MHz GBWP supports 100× gain with 140 kHz small-signal bandwidth; 130 dB CMRR rejects ambient EMI. |
Use Scenario: Buffering 12-bit DAC output driving 10 kΩ load in programmable power supply controller. IC Role / Device Role / Timing Role: Unity-gain voltage follower with rail-to-rail output to preserve DAC full-scale range. Use Value: Output swings to within 40 mV of rails - delivers true 0–2.5V output from 2.5V reference without clipping. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA2188AIDGKT | Unity-gain stable, 2 µV max VOS, 0.1 µV/°C TCVOS, 1.3 mA/ch supply current | Lower offset and drift, but 2 MHz GBWP limits high-gain bandwidth | Prefer OPA2188AIDGKT for ultra-low-drift DC applications where gain < 6 is required |
| ADA4625-2ACPZ-R7 | Unity-gain stable, 120 µV max VOS, 4.4 nV/√Hz noise, 3.4 mA/ch supply current | Lower noise and faster slew (24 V/µs), but higher power and narrower supply (4.5–36V) | Prefer ADA4625-2ACPZ-R7 for high-speed, low-noise applications with available supply headroom |
Compared with OPA2188AIDGKT and ADA4625-2ACPZ-R7, the LMP7708MMX/NOPB uniquely balances ultra-low bias current (200 fA), wide supply (2.7–12V), and decompensated bandwidth (14 MHz at G ≥ 6) - making it optimal for high-impedance, battery-operated, medium-bandwidth precision systems where unity-gain stability is not required.
Availability
LMP7708MMX/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 LMP7708MMX/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 LMP7708MMX/NOPB - was engineered for high-accuracy signal conditioning in sensor front-ends, portable instrumentation, and industrial measurement systems demanding low offset, ultra-low bias current, and rail-to-rail operation.
FAQ
What is the minimum stable closed-loop gain for the LMP7708MMX/NOPB?
The LMP7708MMX/NOPB is decompensated and guaranteed stable at closed-loop gains of 6 or higher. It is not unity-gain stable; attempting G = 1 or G = 2 risks oscillation. For lower gains, external compensation (e.g., dominant-pole capacitor) is required. This design enables its 14 MHz GBWP at AV = 10 - a 2.3× bandwidth advantage over unity-gain-stable alternatives at the same supply current.
Does the LMP7708MMX/NOPB support rail-to-rail input common-mode voltage range?
Yes, the LMP7708MMX/NOPB supports rail-to-rail input common-mode voltage range: −0.2 V to VS + 0.2 V across its full operating temperature range. This allows direct connection to 0 V and VS references without external level shifting - critical for interfacing with single-supply ADCs and sensors referenced to system rails.
What is the maximum capacitive load the LMP7708MMX/NOPB can drive without oscillation in unity-gain buffer configuration?
In unity-gain buffer configuration, the LMP7708MMX/NOPB becomes sensitive to capacitive loading due to reduced phase margin. It is recommended to isolate loads >100 pF using a series resistor (RISO) of 10–100 Ω between the output and the capacitor. For loads >1 nF, RISO ≥ 50 Ω is advised. The LMP7708MMX/NOPB datasheet Figure 45 provides validated isolation networks for CL up to 10 nF.
How does the input bias current of the LMP7708MMX/NOPB behave over temperature?
The LMP7708MMX/NOPB specifies ±200 fA typical input bias current at 25°C, with a maximum of ±400 pA over −40°C to +125°C. Its VIP50 CMOS process ensures sub-picoampere performance across the full range - significantly lower than bipolar-input op-amps (typically nA) and competitive with other precision CMOS amplifiers. This enables accurate measurement in high-impedance sensor circuits without temperature-dependent offset drift.
Is the LMP7708MMX/NOPB pin-compatible with other dual op-amps in VSSOP-8 package?
No, the LMP7708MMX/NOPB has a non-standard VSSOP-8 pinout: Pins 1–3 are Channel A (−IN, +IN, OUT), Pins 6–8 are Channel B (+IN, −IN, OUT), with V− on Pin 4 and V+ on Pin 5. This differs from industry-standard dual op-amp pinouts (e.g., SOIC-8 pin 2/3/1 for Channel A, pin 5/6/7 for Channel B). PCB layout must follow TI's DGK package diagram - direct substitution requires board revision.
LMP7708MMX/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
LMP7708MMX/NOPB FAQ
1.How can I place an order for LMP7708MMX/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LMP7708MMX/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 LMP7708MMX/NOPB reliable?
The price and inventory of LMP7708MMX/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LMP7708MMX/NOPB is usually 5 days.
3.What payment methods are accepted for LMP7708MMX/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LMP7708MMX/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LMP7708MMX/NOPB?
LMP7708MMX/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LMP7708MMX/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 LMP7708MMX/NOPB?
For technical support, including LMP7708MMX/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LMP7708MMX/NOPB requirements.
6.How does Aetrix verify that LMP7708MMX/NOPB is sourced from the original manufacturer or authorized distributors?
All LMP7708MMX/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 LMP7708MMX/NOPB meets industry standards.
7.What is the process for return or replacement of LMP7708MMX/NOPB?
All LMP7708MMX/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LMP7708MMX/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 LMP7708MMX/NOPB part is unused and in its original packaging.
Return procedure for LMP7708MMX/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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