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Texas Instruments LMV712LD/NOPB
- Part No.:
- LMV712LD/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 10-WFDFN Exposed Pad
- Datasheet:
-
LMV712LD/NOPB.pdf
- Description:
- IC OPAMP GP 2 CIRCUIT 10WSON
- Quantity:
- Payment:
- Shipping:
Inventory:2,007
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Product details
Overview
LMV712LD/NOPB from Texas Instruments is a dual rail-to-rail input/output operational amplifier with independent shutdown control per channel, designed for low-voltage portable and RF power amplifier control applications. It delivers 5 MHz gain-bandwidth product, 5 V/µs slew rate, 20 nV/√Hz input voltage noise, 1.22 mA/channel supply current, and rail-to-rail operation from 2.7 V to 5.5 V.
For engineers reviewing the LMV712LD/NOPB datasheet, LMV712LD/NOPB pinout, LMV712LD/NOPB application, or LMV712LD/NOPB equivalent, this device is selected for precision analog signal conditioning in battery-powered cellular front-ends, wireless LAN transceivers, and GSM PA bias control loops where low-noise, fast turn-on (2.2 µs), and glitch-free output ramping are critical.
Technical Context
The LMV712LD/NOPB integrates parallel NMOS and PMOS input stages to achieve rail-to-rail common-mode input range (–0.2 V to V+ + 0.3 V), with crossover-dependent offset voltage behavior centered at ~1.4 V above V−. Its folded-cascode gain stage and Class AB output stage support stable unity-gain operation with up to 200 pF capacitive load.
Independent SDA and SDB pins enable per-channel shutdown, reducing supply current to ≤1.5 µA per channel while holding outputs at V−. Turnon recovery is glitch-free due to controlled internal bias ramping - a key requirement in RF power amplifier envelope tracking and closed-loop PA control circuits.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain-bandwidth product | 5 MHz - supports stable closed-loop gain up to 10× at 500 kHz in PA control feedback paths |
| Slew rate | 5 V/µs - enables fast transient response for dynamic PA bias adjustment without distortion |
| Input voltage noise | 20 nV/√Hz at 1 kHz - preserves SNR in low-level RF detector and envelope amplifier stages |
| Supply current per channel | 1.22 mA (typ) at 2.7 V - extends battery life in handheld GSM/WLAN devices |
| Shutdown current | 1.5 µA (max) per channel - allows selective channel disablement in multi-band transceivers |
| Turnon time from shutdown | 2.2 µs (typ) at 25°C - ensures rapid, glitch-free activation for burst-mode RF transmission |
| Rail-to-rail I/O | VCM = –0.2 V to V+ + 0.3 V; VOUT swing to within 80 mV of rails (RL = 10 kΩ) - maximizes dynamic range in single-supply systems |
Pinout & Package
LMV712LD/NOPB is packaged in a 10-pin WSON (NGY) package measuring 3.0 mm × 3.0 mm with exposed thermal pad. Pin 11 (thermal pad) must be connected to V− or left floating per TI design guidelines.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OUTA) | Channel A output | Drives PA bias node or detector output; rail-to-rail swing supports full-scale control range |
| 2 (–INA) | Channel A inverting input | Accepts feedback signal in transimpedance or inverting amplifier configurations |
| 3 (+INA) | Channel A noninverting input | Receives reference or envelope signal; CMVR extends to V− – 0.2 V for ground-referenced inputs |
| 4 (V−) | Negative supply | Ground reference for single-supply operation; thermal pad connection point |
| 5 (SDA) | Channel A shutdown | Active-high logic: ≥2.4 V (2.7 V supply) enables; ≤0.8 V disables with <1.5 µA ICC |
| 6 (SDB) | Channel B shutdown | Independent control for second channel - enables dual-path envelope shaping or standby sequencing |
| 7 (+INB) | Channel B noninverting input | Supports dual-loop architectures (e.g., amplitude + phase correction) |
| 8 (–INB) | Channel B inverting input | Configurable for differential sensing or complementary feedback |
| 9 (OUTB) | Channel B output | Provides redundant or auxiliary control path; identical specs to OUTA |
| 10 (V+) | Positive supply | Accepts 2.7 V to 5.5 V; PSRR >70 dB ensures immunity to supply ripple in noisy RF sections |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input and output | Enables full utilization of 2.7–5.5 V supply range in single-ended, ground-referenced systems like GSM PA modules |
| Independent per-channel shutdown | Allows selective power gating of one op-amp in dual-loop RF control without affecting the other channel's operation |
| Glitch-free turnon recovery | Eliminates output transients during PA enable events - prevents spurious emissions and TX leakage |
| 200 pF capacitive load drive | Directly interfaces with RF detector diodes and PCB trace capacitance without external isolation components |
| Low 20 nV/√Hz input noise | Maintains signal integrity in high-gain envelope amplification stages where noise directly impacts EVM |
Applications
| GSM Power Amplifier Control Loop | Wireless LAN Transceiver Biasing |
|---|---|
Use Scenario: Closed-loop control of GSM PA output power via directional coupler feedback and detector diode. IC Role / Device Role / Timing Role: Dual op-amp implements error amplifier (Channel A) and loop filter integrator (Channel B); SDA/SDB enable burst-mode PA on/off sequencing. Use Value: 2.2 µs glitch-free turnon prevents TX spectral regrowth; rail-to-rail output drives PA VBEN from 0 V to VCC with <80 mV headroom. | Use Scenario: Dynamic bias control for 2.4 GHz WLAN PA across multiple modulation schemes (OFDM, CCK). IC Role / Device Role / Timing Role: Channel A conditions RF detector output; Channel B generates temperature-compensated bias voltage with independent shutdown during RX mode. Use Value: 20 nV/√Hz noise floor preserves EVM under 64-QAM; 5 MHz GBW supports fast AGC settling in <200 ns. |
| Cellular Handset Envelope Tracking | Portable Radio System Signal Conditioning |
Use Scenario: Real-time envelope generation for envelope-tracking PAs in LTE handsets using baseband IQ data. IC Role / Device Role / Timing Role: Dual-channel configuration provides high-speed envelope buffer (OUTA) and DC offset correction (OUTB) with synchronized shutdown during sleep cycles. Use Value: 5 V/µs slew rate handles 20 MHz LTE envelope bandwidth; 1.22 mA/channel minimizes quiescent drain on Li-ion battery. | Use Scenario: Analog front-end signal conditioning in handheld two-way radios (PMR, DMR), including audio pre-amplification and squelch detection. IC Role / Device Role / Timing Role: Channel A amplifies weak microphone signals; Channel B processes RSSI detector output for automatic squelch control. Use Value: Rail-to-rail I/O accommodates 3.3 V single supply; –40°C to 85°C operating range meets industrial radio environmental requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual low-power RRIO operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV2782IDR | Lower GBW (2.5 MHz), higher VOS (4.5 mV max), no shutdown pins | Lacks independent shutdown; unsuitable for burst-mode PA control requiring glitch-free activation | Select when cost sensitivity outweighs need for fast turnon and per-channel disable capability |
| OPA2313AIDR | Higher supply current (250 µA/channel), lower noise (16 nV/√Hz), no shutdown | No shutdown function; limited to always-on signal chains; smaller 1.5 mm × 2 mm X2SON package | Prefer for ultra-low-power sensor interfaces where shutdown is unnecessary and noise is primary concern |
Compared with TLV2782IDR and OPA2313AIDR, LMV712LD/NOPB uniquely combines 5 MHz bandwidth, 2.2 µs shutdown recovery, and independent per-channel enable - making it the only option among the three qualified for GSM/WLAN PA control loops requiring glitch-free, dynamically gated analog signal paths.
Availability
LMV712LD/NOPB is available at Aetrix Electronics and suitable for GSM power amplifier control loops, wireless LAN transceiver biasing, and cellular handset envelope tracking requiring stable component supply, long-term lifecycle support, and automotive-grade reliability assurance.
Supply support for LMV712LD/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 company specializing in analog and embedded processing technologies, with leadership in precision amplifiers, power management, and high-reliability signal chain solutions.
The LMV712LD/NOPB belongs to TI's low-power, rail-to-rail op-amp product line engineered specifically for battery-operated RF infrastructure and mobile communications equipment where speed, noise, and shutdown efficiency are co-optimized.
FAQ
What is the maximum capacitive load the LMV712LD/NOPB can drive without external compensation?
The LMV712LD/NOPB can directly drive up to 200 pF in unity-gain configuration without oscillation or instability. This capability is verified across temperature and supply voltage ranges per TI's Electrical Characteristics table. For loads exceeding 200 pF, TI recommends adding an isolation resistor (RISO) between the output and capacitive node, as shown in Figure 32 of the LMV712LD/NOPB datasheet. The LMV712LD/NOPB's internal compensation maintains phase margin ≥60° under these conditions.
Does the LMV712LD/NOPB support true single-supply operation from 2.7 V?
Yes, the LMV712LD/NOPB is fully specified and tested for operation from 2.7 V to 5.5 V single supply. Its rail-to-rail input common-mode range extends from V− – 0.2 V to V+ + 0.3 V, and output swing reaches within 80 mV of both rails with 10 kΩ load. All key parameters-including GBWP, slew rate, noise, and shutdown current-are ensured at 2.7 V per Section 6.5 of the LMV712LD/NOPB datasheet.
How does the LMV712LD/NOPB behave during shutdown, and what is the output state?
When either SDA or SDB is pulled low (<0.8 V at 2.7 V supply), the corresponding amplifier enters shutdown mode, reducing its supply current to ≤1.5 µA. Critically, the output (OUTA or OUTB) is actively pulled to V− (ground in single-supply use), not left floating. This behavior is confirmed in Section 7.4.1 and Electrical Characteristics Table (VO(SD) = 10–200 mV). The LMV712LD/NOPB's glitch-free ramp-up upon exit ensures no transient spikes occur during reactivation.
Is the LMV712LD/NOPB pin-compatible with other packages in the LMV712 family?
No - the LMV712LD/NOPB uses the 10-pin WSON (NGY) package, which has a distinct pinout versus the 10-pin DSBGA (YPA) and 10-pin VSSOP (DGS) variants. While all share identical electrical functionality and pin naming, physical pin assignments differ: for example, V− is Pin 4 in WSON but Pin D2 in DSBGA and Pin 4 in VSSOP. PCB layout must match the NGY footprint; direct substitution requires board redesign. Always verify package-specific pin functions in Section 5 of the LMV712LD/NOPB datasheet.
What is the typical input offset voltage drift over temperature for the LMV712LD/NOPB?
The LMV712LD/NOPB exhibits a maximum input offset voltage (VOS) of 3.2 mV over the full operating temperature range of –40°C to +85°C (for LMV712, non-Q1 grade). This value is specified in Section 6.5 of the datasheet under "Input offset voltage" with test conditions VCM = 0.85 V and 1.85 V. Drift is not characterized separately but is bounded by this max specification - meaning total VOS variation from 25°C baseline remains ≤±1.6 mV across temperature. No additional drift coefficient (µV/°C) is provided in the official LMV712LD/NOPB documentation.
LMV712LD/NOPB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- LMV®
- Package/Case:
- 10-WFDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 2
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 5V/µs
- Gain Bandwidth Product:
- 5 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 5.5 pA
- Voltage - Input Offset:
- 400 µV
- Current - Supply:
- 1.22mA (x2 Channels)
- Current - Output / Channel:
- 50 mA
- Voltage - Supply Span (Min):
- 2.7 V
- Voltage - Supply Span (Max):
- 5.5 V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 10-WSON (3x3)
LMV712LD/NOPB FAQ
1.How can I place an order for LMV712LD/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LMV712LD/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 LMV712LD/NOPB reliable?
The price and inventory of LMV712LD/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LMV712LD/NOPB is usually 5 days.
3.What payment methods are accepted for LMV712LD/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LMV712LD/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LMV712LD/NOPB?
LMV712LD/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LMV712LD/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 LMV712LD/NOPB?
For technical support, including LMV712LD/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LMV712LD/NOPB requirements.
6.How does Aetrix verify that LMV712LD/NOPB is sourced from the original manufacturer or authorized distributors?
All LMV712LD/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 LMV712LD/NOPB meets industry standards.
7.What is the process for return or replacement of LMV712LD/NOPB?
All LMV712LD/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LMV712LD/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 LMV712LD/NOPB part is unused and in its original packaging.
Return procedure for LMV712LD/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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