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Texas Instruments LMV712MMX
- Part No.:
- LMV712MMX
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
LMV712MMX.pdf
- Description:
- IC OPAMP GP 2 CIRCUIT 10VSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,443
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Product details
Overview
LMV712MMX from Texas Instruments is a dual rail-to-rail input/output operational amplifier with independent shutdown control, designed for low-voltage portable systems. It delivers 5 MHz gain-bandwidth, 5 V/µs slew rate, 20 nV/√Hz input voltage noise, 1.22 mA/channel supply current, and operates from 2.7 V to 5.5 V - enabling precision signal conditioning in GSM power amplifier control loops.
For engineers reviewing the LMV712MMX datasheet, LMV712MMX pinout, LMV712MMX application, or LMV712MMX equivalent, this device is selected for battery-powered RF front-end monitoring where rail-to-rail swing, fast turnon (2.2 µs), low quiescent current in shutdown (1.5 µA), and capacitive load tolerance (200 pF) are critical design requirements.
Technical Context
The LMV712MMX integrates parallel NMOS and PMOS input stages to achieve rail-to-rail common-mode input range, with internal logic dynamically allocating bias current across VCM to maintain stability and low distortion. Its output stage uses a PMOS/NPN composite configuration to deliver true rail-to-rail output swing.
Independent shutdown pins (SDA, SDB) reduce each channel's supply current to <1 µA while holding output at V−; recovery features glitch-free ramp-up (2.2 µs typical) essential for PA bias control. The amplifier remains unity-gain stable and drives up to 200 pF without external compensation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain-bandwidth product | 5 MHz - supports closed-loop bandwidth up to ~4.5 MHz in unity-gain buffer configurations for RF envelope detection. |
| Slew rate | 5 V/µs - enables accurate reproduction of fast transient signals in power amplifier feedback paths. |
| Input voltage noise | 20 nV/√Hz at 1 kHz - minimizes added noise in low-level sensor or detector signal chains. |
| Supply current per channel | 1.22 mA (typ) at 2.7 V - allows dual-channel operation within tight power budgets of handheld RF modules. |
| Shutdown current | 1.5 µA (typ) - reduces system standby power by >99% per channel when unused. |
| Common-mode input range | V− −0.2 V to V+ +0.3 V - accommodates inputs beyond rails in single-supply GSM front-end bias networks. |
| Output swing (RL = 10 kΩ) | Within 8 mV of rails at 2.7 V - preserves dynamic range in low-voltage ADC driver or comparator reference circuits. |
Pinout & Package
LMV712MMX is packaged in a 10-pin VSSOP (DGS) with 3.00 mm × 3.00 mm body size, optimized for space-constrained RF modules and portable transceivers.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 OUTA | Channel A output | Drives external load (e.g., PA bias node); rail-to-rail swing ensures full utilization of supply headroom. |
| 2 –INA | Channel A inverting input | Accepts feedback signal in transimpedance or differential configurations for current sensing. |
| 3 +INA | Channel A noninverting input | Receives reference or detector output; rail-to-rail capability supports direct connection to DAC outputs. |
| 4 V− | Negative supply | Ground-referenced return path; must be low-impedance to minimize PSRR degradation in RF-sensitive layouts. |
| 5 SDA | Channel A shutdown | Active-high control: ≥2.4 V (2.7 V supply) enables channel; <0.8 V disables with output pulled to V−. |
| 6 SDB | Channel B shutdown | Independent enable/disable for second channel - enables dynamic power gating in multi-band architectures. |
| 7 +INB | Channel B noninverting input | Supports dual-path monitoring (e.g., forward/reflected power detection) without cross-talk. |
| 8 –INB | Channel B inverting input | Used for differential input or feedback in Channel B; matched layout critical for CMRR preservation. |
| 9 OUTB | Channel B output | Provides second independent output for redundant control or diversity switching functions. |
| 10 V+ | Positive supply | Accepts 2.7–5.5 V; decoupling near pin required to suppress RF coupling into sensitive analog core. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail I/O | Enables full-scale signal handling in 2.7-V systems without level-shifting circuitry or supply overhead. |
| Independent shutdown | Per-channel power gating reduces total system quiescent current without disabling entire signal chain. |
| Glitch-free turnon | Smooth output ramp (2.2 µs) prevents spurious RF bursts during PA enable transitions in GSM burst mode. |
| 200-pF capacitive load drive | Eliminates need for isolation resistors in PCB trace or filter capacitor loading - simplifies layout in compact RF modules. |
| Low 20-nV/√Hz noise | Preserves SNR in weak-signal applications like directional coupler detector outputs or RSSI measurement paths. |
Applications
| Power Amplifier Control Loop | Cellular Transceiver Front-End |
|---|---|
Use Scenario: Closed-loop control of GSM/EDGE PA output power using directional coupler feedback. IC Role / Device Role / Timing Role: Dual op-amp configures as error amplifier (Channel A) and reference buffer (Channel B), with independent shutdown for burst-mode power gating. Use Value: Glitch-free 2.2-µs turnon prevents RF discontinuities; rail-to-rail swing maximizes control range across 2.7–5.5 V supply variations. | Use Scenario: Simultaneous monitoring of forward and reflected RF power in multi-band antenna switch modules. IC Role / Device Role / Timing Role: Channel A processes forward-coupled signal; Channel B processes reflected signal - both operating with matched gain and offset. Use Value: Independent shutdown allows dynamic channel disable during band switching; 20-nV/√Hz noise ensures accurate RSSI calculation at low signal levels. |
| Portable Wireless LAN | Cordless Phone Base Station |
Use Scenario: Battery-powered 2.4-GHz WLAN transceiver requiring low-quiescent-current analog front-end. IC Role / Device Role / Timing Role: Dual amplifier conditions detector outputs for automatic gain control (AGC) and temperature-compensated biasing. Use Value: 1.22-mA/channel active current and 1.5-µA shutdown current extend battery life; 5-MHz GBW supports fast AGC loop response. | Use Scenario: DECT 6.0 base station with dual-channel RF power management for transmit/receive path isolation. IC Role / Device Role / Timing Role: One channel controls PA bias; second channel buffers reference voltage for DAC-driven calibration circuits. Use Value: Matched input offset (<3 mV) ensures consistent calibration accuracy; rail-to-rail output maintains DAC linearity over full 3.3-V supply range. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual rail-to-rail op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV2782IDR | Lower GBW (2.8 MHz), higher noise (29 nV/√Hz), no shutdown pins | Lacks independent shutdown and slower response - unsuitable for burst-mode PA control | Select only if cost sensitivity outweighs need for fast turnon and power gating |
| OPA2314AIDR | Higher supply current (1.8 mA/ch), no shutdown, wider supply range (1.8–5.5 V) | Cannot enter ultra-low-power state; less suitable for intermittent RF monitoring duty cycles | Prefer when higher drive strength or lower VOS (0.75 mV max) is prioritized over shutdown capability |
Compared with TLV2782IDR and OPA2314AIDR, LMV712MMX uniquely combines independent shutdown, 2.2-µs glitch-free turnon, and 200-pF capacitive load drive - making it the only option among the three qualified for GSM PA control loop timing-critical applications.
Availability
LMV712MMX is available at Aetrix Electronics and suitable for cellular phones, portable wireless LAN, and cordless phone base stations requiring stable component supply and long-term production continuity.
Supply support for LMV712MMX 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 delivering analog and embedded processing solutions for industrial, automotive, and personal electronics markets.
The LMV712MMX belongs to TI's low-power, high-precision op-amp portfolio, engineered specifically for battery-operated RF front-ends where rail-to-rail operation, fast shutdown recovery, and low-noise signal conditioning are mandatory.
FAQ
What is the maximum capacitive load the LMV712MMX can drive without oscillation?
The LMV712MMX can directly drive up to 200 pF in unity-gain configuration without external compensation or isolation resistors. This capability is verified across temperature and supply voltage ranges (2.7 V to 5.5 V) and eliminates stability risks in RF module PCB traces and detector filter networks. Exceeding 200 pF requires adding an isolation resistor (RISO) as recommended in TI's application note SNOS534J Figure 32.
Does the LMV712MMX support true rail-to-rail input and output operation?
Yes, the LMV712MMX supports rail-to-rail input (V− −0.2 V to V+ +0.3 V) and rail-to-rail output (within 8 mV of rails at 2.7 V, RL = 10 kΩ). Its dual-input-stage architecture - combining NMOS and PMOS differential pairs with dynamic bias allocation - ensures linear operation across the full supply range, critical for interfacing with DACs and ADCs in single-supply portable systems.
How does the shutdown feature of the LMV712MMX behave during power-up?
During power-up, the LMV712MMX outputs remain in high-impedance state until valid supply voltages are established. Once powered, each channel enters active mode only when its respective shutdown pin (SDA or SDB) is driven ≥2.4 V (at 2.7 V supply) or ≥4.5 V (at 5 V supply). Floating shutdown pins may cause unintended disablement due to leakage; TI recommends tying unused pins to V+ via 10-kΩ resistor.
What is the typical turnon time from shutdown for the LMV712MMX?
The LMV712MMX exhibits a typical turnon time of 2.2 µs from shutdown to full output swing at 2.7 V supply, with worst-case value of 4.6 µs across −40°C to 125°C. This fast, glitch-free ramp-up is achieved via internal class-AB control and folded cascode architecture - preventing spurious RF emissions during GSM TDMA burst activation.
Is the LMV712MMX qualified for automotive applications?
No, the LMV712MMX is not automotive-qualified. It corresponds to the commercial-grade LMV712-N variant (not LMV712-N-Q1). The Q1 version meets AEC-Q100 Grade 1 (−40°C to 125°C) and includes additional automotive-specific testing and traceability. For automotive infotainment or telematics RF modules, LMV712MMX must be replaced with LMV712MQX or equivalent Q1-grade part.
LMV712MMX Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- LMV®
- Package/Case:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- 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-VSSOP
LMV712MMX FAQ
1.How can I place an order for LMV712MMX through Aetrix?
Please submit a Request for Quotation (RFQ) for LMV712MMX 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 LMV712MMX reliable?
The price and inventory of LMV712MMX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LMV712MMX is usually 5 days.
3.What payment methods are accepted for LMV712MMX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LMV712MMX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LMV712MMX?
LMV712MMX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LMV712MMX 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 LMV712MMX?
For technical support, including LMV712MMX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LMV712MMX requirements.
6.How does Aetrix verify that LMV712MMX is sourced from the original manufacturer or authorized distributors?
All LMV712MMX 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 LMV712MMX meets industry standards.
7.What is the process for return or replacement of LMV712MMX?
All LMV712MMX units undergo pre-shipment inspection (PSI). If there is an issue with LMV712MMX, 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 LMV712MMX part is unused and in its original packaging.
Return procedure for LMV712MMX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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