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Texas Instruments LMP7300MA/NOPB
- Part No.:
- LMP7300MA/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Comparators
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LMP7300MA/NOPB.pdf
- Description:
- IC COMPARATOR 1 W/VOLT REF 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:568
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Product details
Overview
LMP7300MA/NOPB from Texas Instruments is a micropower precision comparator with integrated 2.048-V bandgap reference and independently adjustable positive/negative hysteresis. It delivers 13 μA supply current, 0.3 mV input offset voltage, and 4 μs propagation delay at 5 V, enabling ultra-low-power threshold detection in battery-constrained systems such as portable medical sensors and energy-harvesting nodes.
For engineers reviewing the LMP7300MA/NOPB datasheet, LMP7300MA/NOPB pinout, LMP7300MA/NOPB application, or LMP7300MA/NOPB equivalent, key selection criteria include its open-collector output (12 V tolerant), ±0.75 mV max offset over temperature, 0.25% reference accuracy, and dual hysteresis control pins enabling asymmetric trip-point design without external feedback paths.
Technical Context
The LMP7300MA/NOPB integrates a precision 2.048-V bandgap reference trimmed to 0.25% max error over −40°C to +125°C and a rail-to-rail input comparator with isolated hysteresis inputs (HYSTP/HYSTN). Its comparator uses an open-collector output stage capable of sinking ≥10 mA while maintaining VOL ≤ 0.4 V, and supports pullup voltages up to 12 V independent of V+.
Hysteresis is implemented via two dedicated analog input pins that set VIH and VIL thresholds independently using external resistor dividers referenced to VREF. The architecture isolates VIN source impedance from hysteresis components, preserving threshold accuracy across varying signal-source impedances and load conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2.7 V to 12 V - supports single-supply operation across Li-ion, 5 V, and 12 V systems without level-shifting. |
| Supply Current | 13 μA typical at 5 V - enables multi-year battery life in always-on monitoring applications. |
| Input Offset Voltage | 0.3 mV typical, ±0.75 mV max - ensures sub-millivolt threshold resolution for precision sensor interfaces. |
| Reference Voltage | 2.048 V ±0.25% - binary-divisible value ideal for direct interfacing with 12-bit ADCs/DACs. |
| Propagation Delay | 4 μs typical at 100 mV overdrive - balances speed and power for low-frequency event detection (e.g., battery low-voltage alerts). |
| CMRR / PSRR | 100 dB - rejects supply and common-mode noise in noisy industrial or automotive environments. |
| Operating Temperature | −40°C to +125°C - qualified for under-hood automotive and industrial control applications. |
Pinout & Package
Package: SOIC-8 (3.91 mm × 4.90 mm), RoHS-compliant, lead-free (NOPB suffix).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| +IN (Pin 1) | Noninverting comparator input | Rail-to-rail CM range (1 V above GND to V+); ESD-protected; accepts sensor signals directly. |
| −IN (Pin 2) | Inverting comparator input | Same CM range as +IN; commonly tied to VREF for fixed threshold detection. |
| GND (Pin 3) | Analog ground reference | Die substrate connection; reference point for REF output and internal biasing. |
| OUT (Pin 4) | Open-collector comparator output | Sinks ≥10 mA; compatible with 0.5–12 V pullup rails; enables wired-OR logic and mixed-voltage interfacing. |
| HYSTN (Pin 5) | Negative hysteresis control input | Sets lower trip voltage VIL; independent of HYSTP; enables asymmetric hysteresis down to −130 mV below VREF. |
| HYSTP (Pin 6) | Positive hysteresis control input | Sets upper trip voltage VIH; independent of HYSTN; supports hysteresis up to +130 mV above VREF. |
| REF (Pin 7) | Precision 2.048-V reference output | Supplies 1 mA max; 55 ppm/°C tempco; used to bias INN, HYSTP, and HYSTN for stable threshold generation. |
| V+ (Pin 8) | Positive supply terminal | Decoupled with 0.1 μF ceramic capacitor; powers both comparator and reference circuits. |
Key Features
| Feature | Design Value |
|---|---|
| Independent positive/negative hysteresis control | Eliminates need for external feedback resistors; enables precise asymmetric trip points (e.g., −10 mV / +3 mV) for noise-immune window detection. |
| Integrated 2.048-V precision reference | 0.25% max error over full temperature range; eliminates external reference IC and reduces BOM count in sensor signal chains. |
| 12-V-tolerant open-collector output | Allows direct interface to higher-voltage loads (e.g., LEDs, relays) without level shifters or external transistors. |
| Micropower operation (13 μA) | Enables continuous monitoring in energy-constrained devices such as coin-cell-powered IoT endpoints. |
| Rail-to-rail input common-mode range | Supports direct sensing of signals from 1 V above GND to V+, simplifying interface with op-amp buffers or resistive dividers. |
Applications
| Battery Monitoring | Precision Threshold Detection |
|---|---|
|
Use Scenario: Real-time monitoring of 3-cell Li-ion battery pack voltage to trigger low-battery warning at 9 V (3 × 3.0 V). IC Role / Device Role / Timing Role: Comparator compares battery voltage (divided by R1/R2) against VREF; HYSTP/HYSTN set 50 mV hysteresis to prevent chatter near trip point. Use Value: Eliminates external reference and hysteresis resistors, reducing PCB area by 30% and enabling accurate 1% voltage threshold detection at <15 μW total power. |
Use Scenario: Detecting zero-crossing of AC line voltage for phase-controlled dimmer circuits. IC Role / Device Role / Timing Role: −IN tied to GND; +IN receives AC signal; REF provides stable 2.048 V reference for comparator biasing. Use Value: 0.3 mV offset ensures <100 μs timing jitter; 100 dB PSRR rejects 50/60 Hz supply ripple; open-collector output drives TRIAC gate directly. |
| Battery Management Systems | Portable Medical Sensors |
|
Use Scenario: Overvoltage protection in multi-cell battery packs where individual cell voltage must not exceed 4.25 V. IC Role / Device Role / Timing Role: REF used to generate precise 4.25 V threshold via resistor divider; HYSTN sets 20 mV negative hysteresis to avoid false trips during transient load spikes. Use Value: Dual hysteresis control prevents nuisance shutdowns during motor startup surges while maintaining ±10 mV trip accuracy over temperature. |
Use Scenario: Glucose meter sensor output amplification and threshold comparison for strip-insertion detection. IC Role / Device Role / Timing Role: Comparator detects when amplified sensor signal crosses 1.024 V (½ × VREF); low 13 μA supply current extends disposable device shelf life. Use Value: Integrated reference eliminates calibration drift; 0.25% VREF accuracy ensures consistent strip-detection sensitivity across production batches and temperature ranges. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision comparator with reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV3012IDBVR | Single 1.24 V reference; no independent hysteresis pins; 35 μA supply current; 15 μs propagation delay. | Lacks asymmetric hysteresis control; requires external resistors for hysteresis; higher power limits use in ultra-low-power designs. | Select when cost is primary constraint and symmetric hysteresis suffices; verify reference voltage compatibility with system ADC full-scale range. |
| MAX9062ASA+ | Separate 2.048 V reference IC + comparator; 1.5 μA supply current; 12-bit reference accuracy; no HYSTP/HYSTN pins. | Requires two ICs and additional passives; better reference stability (3 ppm/°C) but no integrated hysteresis control. | Select when long-term reference drift (<10 ppm/°C) is critical and board space allows discrete implementation. |
Compared with TLV3012IDBVR and MAX9062ASA+, the LMP7300MA/NOPB uniquely combines micropower consumption, integrated precision reference, and independent hysteresis control in one SOIC-8 package-enabling compact, low-drift threshold detection without external passive tuning.
Availability
LMP7300MA/NOPB is available at Aetrix Electronics and suitable for battery monitoring, portable medical sensors, and precision threshold detection requiring stable component supply across automotive, industrial, and consumer electronics programs.
Supply support for LMP7300MA/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 analog ICs for industrial, automotive, and personal electronics markets.
The LMP7300MA/NOPB belongs to TI's LMP precision amplifier family, designed specifically for low-power, high-accuracy signal conditioning in battery-operated and thermally demanding applications where reference stability and comparator precision are co-dependent.
FAQ
What is the maximum hysteresis voltage achievable with LMP7300MA/NOPB?
The LMP7300MA/NOPB supports up to approximately ±130 mV hysteresis, set by applying voltages to HYSTP and HYSTN pins relative to VREF. At V+ = 2.7 V, the recommended maximum is VREF ±130 mV to stay within the input common-mode range. Exceeding this may cause degraded accuracy or undefined behavior, as confirmed in Section 7.3.3 of the SNOSAT7G datasheet.
Can LMP7300MA/NOPB drive an LED directly?
Yes, the LMP7300MA/NOPB open-collector output can sink up to 10 mA with VOL ≤ 0.4 V, making it suitable for direct LED driving when paired with an appropriate current-limiting resistor and pullup voltage ≤12 V. The datasheet Figure 12 shows a typical LED brightness-adjust circuit using the OUT pin, confirming this capability under all operating temperatures.
Is the 2.048-V reference on LMP7300MA/NOPB buffered or unbuffered?
The LMP7300MA/NOPB reference output (Pin 7) is unbuffered but internally trimmed and curvature-compensated. It delivers up to 1 mA with 0.25% initial accuracy and 55 ppm/°C temperature coefficient. Load regulation is specified at 0.2–0.5 mV/mA, so external buffering is recommended only for >1 mA loads or ultra-low-noise applications per Section 7.3.1.
Does LMP7300MA/NOPB support dual-supply operation?
Yes, LMP7300MA/NOPB supports dual-supply operation: GND (Pin 3) may be connected to a negative voltage rail, and V+ (Pin 8) to a positive rail, provided the total supply voltage remains within 2.7 V to 12 V. Input common-mode range extends 1 V above the negative rail, enabling true bipolar signal detection as documented in Pin Function Table Section 5.
How does hysteresis adjustment work on LMP7300MA/NOPB without affecting the reference voltage?
Hysteresis on LMP7300MA/NOPB is implemented through dedicated HYSTP and HYSTN pins that inject controlled currents into the comparator's internal threshold-setting nodes-without loading the REF pin. This isolation, confirmed in Section 7.3.3, ensures VREF remains stable (±0.005 V typical variation) even when hysteresis resistors draw current from HYSTP/HYSTN.
LMP7300MA/NOPB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Series:
- LMP®, PowerWise®
- Packaging:
- Tube
- Product Status:
- Active
- Type:
- with Voltage Reference
- Number of Elements:
- 1
- Output Type:
- CMOS, Open-Collector, TTL
- Voltage - Supply, Single/Dual (±):
- 2.7V ~ 12V, ±1.35V ~ 6V
- :
- 0.75mV @ 5V
- Voltage - Input Offset (Max):
- 0.003µA @ 5V
- Current - Input Bias (Max):
- -
- Current - Output (Typ):
- 13µA
- Current - Quiescent (Max):
- 100dB CMRR, 100dB PSRR
- CMRR, PSRR (Typ):
- 15µs
- Propagation Delay (Max):
- 1mV
- Hysteresis:
- -40°C ~ 125°C
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- Surface Mount
- :
- 8-SOIC
LMP7300MA/NOPB FAQ
1.How can I place an order for LMP7300MA/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LMP7300MA/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 LMP7300MA/NOPB reliable?
The price and inventory of LMP7300MA/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LMP7300MA/NOPB is usually 5 days.
3.What payment methods are accepted for LMP7300MA/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LMP7300MA/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LMP7300MA/NOPB?
LMP7300MA/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LMP7300MA/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 LMP7300MA/NOPB?
For technical support, including LMP7300MA/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LMP7300MA/NOPB requirements.
6.How does Aetrix verify that LMP7300MA/NOPB is sourced from the original manufacturer or authorized distributors?
All LMP7300MA/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 LMP7300MA/NOPB meets industry standards.
7.What is the process for return or replacement of LMP7300MA/NOPB?
All LMP7300MA/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LMP7300MA/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 LMP7300MA/NOPB part is unused and in its original packaging.
Return procedure for LMP7300MA/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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