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Texas Instruments LMP7300MAX/NOPB
- Part No.:
- LMP7300MAX/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Comparators
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LMP7300MAX/NOPB.pdf
- Description:
- IC COMPARATOR 1 W/VOLT REF 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,352
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Product details
Overview
LMP7300MAX/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, 0.75-mV max 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 LMP7300MAX/NOPB datasheet, LMP7300MAX/NOPB pinout, LMP7300MAX/NOPB application, or LMP7300MAX/NOPB equivalent, key selection considerations include its open-collector output (12-V tolerant), ±1-mV/mV hysteresis control linearity, 0.25% reference accuracy over −40°C to 125°C, and dual-rail hysteresis pin isolation for stable trip-point setting under varying source impedance.
Technical Context
The LMP7300MAX/NOPB integrates a rail-to-rail input comparator core with a curvature-compensated 2.048-V bandgap reference, both trimmed for 0.25% initial accuracy and 55 ppm/°C temperature coefficient. Its HYSTP and HYSTN pins accept external voltage taps to set independent upper (VIH) and lower (VIL) thresholds without loading the input signal path.
Hysteresis control uses resistor-divider networks referenced to VREF, enabling asymmetric bands (e.g., +3 mV / −10 mV) or symmetric configurations (±5 mV). The open-collector output supports pull-up to up to 12 V independent of V+, allowing mixed-voltage interfacing with TTL, CMOS, or discrete loads like LEDs and solenoids.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2.7 V to 12 V - enables direct operation from single Li-ion (3.0–4.2 V), 5-V logic rails, or 9–12-V industrial supplies without regulation. |
| Reference Voltage | 2.048 V ±0.25% - binary-divisible value ideal for 12-bit ADC/DAC reference scaling; stable across full temperature range. |
| Input Offset Voltage | ≤0.75 mV (max) - ensures ≤0.04% error in 2-V threshold detection; critical for precision battery voltage monitoring at 3.3 V or 5 V. |
| Propagation Delay | 4 µs (typ, 100 mV overdrive) - supports >100 kHz event detection in low-power wake-up circuits with minimal latency. |
| Hysteresis Control | 1 mV/mV linearity - allows precise 1-mV step resolution in hysteresis adjustment using standard 1% resistors. |
| Supply Current | 13 µA (typ, 5 V) - draws only 65 µW at 5 V, extending coin-cell life to years in intermittent-sensing applications. |
| CMRR / PSRR | 100 dB - rejects common-mode noise from shared ground paths and supply ripple, maintaining threshold stability in noisy environments. |
Pinout & Package
Package: 8-pin VSSOP (DGK), body size 3.00 mm × 3.00 mm - compact footprint suitable for space-constrained portable PCBs and wearable electronics.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| +IN (Pin 1) | Noninverting comparator input | Accepts signals from 1 V above GND to V+; ESD-protected; used for sensing rising-edge thresholds relative to VREF. |
| −IN (Pin 2) | Inverting comparator input | Accepts reference or fixed threshold (e.g., tied to VREF); common-mode range matches +IN for balanced differential use. |
| GND (Pin 3) | Analog ground reference | Die substrate connection; must be decoupled with 0.1-µF ceramic capacitor; reference output and hysteresis pins are referenced to this node. |
| OUT (Pin 4) | Open-collector output | Sinks up to 10 mA; voltage rail unconstrained - can interface to 3.3-V, 5-V, or 12-V logic without level shifters. |
| HYSTN (Pin 5) | Negative hysteresis control | Sets lower trip point VIL; accepts DC voltage from 1 V above GND to V+; isolated from input impedance to prevent threshold drift. |
| HYSTP (Pin 6) | Positive hysteresis control | Sets upper trip point VIH; independent of HYSTN; enables asymmetric hysteresis for noise-immune zero-crossing or battery undervoltage lockout. |
| REF (Pin 7) | Precision reference output | 2.048-V ±0.25%, 1 mA source/sink capability; used to bias −IN, HYSTP, and HYSTN; low 100-µVRMS noise supports high-resolution sensing. |
| V+ (Pin 8) | Positive supply terminal | Accepts 2.7–12 V; requires local 0.1-µF ceramic decoupling to GND; powers both comparator and reference sections. |
Key Features
| Feature | Design Value |
|---|---|
| Independent hysteresis control | Separate HYSTP/HYSTN pins enable asymmetric trip points (e.g., +3 mV VIH, −10 mV VIL) without resistor interaction or input loading. |
| Micropower operation | 13 µA supply current at 5 V allows continuous monitoring in battery-powered devices with multi-year operational life on CR2032 cells. |
| 12-V tolerant open-collector output | Drives loads up to 12 V regardless of V+, simplifying interface to higher-voltage peripherals (e.g., LED indicators, relays) without external transistors. |
| Curvature-compensated reference | 2.048-V bandgap trimmed to 55 ppm/°C TC and 0.25% accuracy over −40°C to 125°C - eliminates need for external reference calibration. |
| High PSRR/CMRR | 100 dB power supply and common-mode rejection maintains stable switching thresholds despite supply ripple or ground bounce in mixed-signal systems. |
Applications
| Battery Voltage Monitoring | Precision Threshold Detection |
|---|---|
|
Use Scenario: Monitoring Li-ion cell voltage during charge/discharge cycles to trigger undervoltage lockout at 3.0 V and overvoltage shutdown at 4.25 V. IC Role / Device Role / Timing Role: LMP7300MAX/NOPB acts as dual-threshold detector using VREF-biased −IN and resistor-divided HYSTP/HYSTN to define hysteresis bands around each trip point. Use Value: Eliminates external reference and dual comparators; 0.75-mV offset ensures ±1.5-mV trip accuracy, preventing premature cutoff or overcharge. |
Use Scenario: Detecting precise analog sensor outputs (e.g., thermistor voltage at 25°C = 2.048 V) to activate alarms or control logic. IC Role / Device Role / Timing Role: Comparator compares sensor output against internal 2.048-V reference; HYSTP/HYSTN pins set 5-mV hysteresis to reject EMI-induced false triggers. Use Value: Single-chip solution reduces BOM count by 3 components; 13 µA quiescent current enables always-on monitoring in IoT edge nodes. |
| Zero-Crossing Detection | Portable Medical Sensor Interface |
|
Use Scenario: Converting AC line voltage into clean digital zero-cross pulses for TRIAC phase-control dimmers or power metering. IC Role / Device Role / Timing Role: LMP7300MAX/NOPB compares AC waveform against GND (−IN = GND); HYSTN sets negative hysteresis to suppress noise near 0 V crossing. Use Value: 4 µs propagation delay ensures sub-100-ns timing jitter at 50/60 Hz; open-collector output directly drives optocoupler LED with 12-V pull-up. |
Use Scenario: Interfacing low-output electrochemical sensors (e.g., glucose strips) requiring stable 2.048-V excitation and low-noise threshold comparison. IC Role / Device Role / Timing Role: REF pin supplies excitation voltage; +IN reads sensor output; −IN tied to VREF; HYSTP/HYSTN configured for 2-mV symmetric hysteresis. Use Value: Integrated reference eliminates matching drift between excitation and threshold; 100-µVRMS noise floor preserves signal integrity in µA-level current measurements. |
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 comparator only; no integrated reference; 1.8-V min supply; 350-nA supply current; 10-µs delay. | Requires external 2.048-V reference (e.g., REF3020) and hysteresis resistors; better for ultra-low-power (<1 µA) but higher design complexity. | Select TLV3012IDBVR when supply voltage drops below 2.7 V or when reference flexibility outweighs integration benefits. |
| MAX9063ASA+ | Comparator + 2.048-V reference; 20-µA supply current; 1.5-µs delay; no independent hysteresis pins - uses single external resistor. | Supports symmetric hysteresis only; faster response but less noise immunity in asymmetric noise environments (e.g., motor-driven systems). | Select MAX9063ASA+ when propagation delay <2 µs is mandatory and hysteresis symmetry suffices for the application. |
Compared with TLV3012IDBVR and MAX9063ASA+, the LMP7300MAX/NOPB uniquely provides independent positive/negative hysteresis control, lowest offset voltage (0.75 mV max), and lowest power (13 µA) among integrated comparator-reference devices - making it optimal for precision, low-drift, asymmetric threshold detection in portable equipment.
Availability
LMP7300MAX/NOPB is available at Aetrix Electronics and suitable for battery monitoring, portable medical devices, and precision sensor interfaces requiring stable component supply across automotive, industrial, and consumer product lifecycles.
Supply support for LMP7300MAX/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 expertise in precision signal chain components.
The LMP7300MAX/NOPB belongs to TI's LMP precision amplifier family, designed specifically for micropower, high-accuracy threshold detection in portable, battery-operated, and energy-sensitive systems.
FAQ
What is the maximum supply voltage for the LMP7300MAX/NOPB?
The LMP7300MAX/NOPB supports a supply voltage range of 2.7 V to 12 V. Absolute maximum rating is 13.6 V, but operation above 12 V is not recommended. At 12 V, supply current remains within specification (≤20 µA), and the open-collector output can safely sink loads referenced up to 12 V relative to GND - enabling direct interface with higher-voltage peripherals without level-shifting circuitry.
How does the LMP7300MAX/NOPB achieve independent positive and negative hysteresis?
The LMP7300MAX/NOPB uses two dedicated pins - HYSTP (Pin 6) and HYSTN (Pin 5) - each accepting an external DC voltage to set VIH and VIL thresholds independently. These pins are internally isolated from input impedance and supply rails, so resistor-divider networks tied to VREF generate precise, non-interacting hysteresis bands. For example, applying 2.045 V to HYSTN and 2.051 V to HYSTP yields VIL = 2.045 V and VIH = 2.051 V - a 6-mV asymmetric window immune to source impedance variation.
Can the LMP7300MAX/NOPB drive an LED directly?
Yes - the LMP7300MAX/NOPB's open-collector output can sink up to 10 mA with <0.4 V saturation voltage across −40°C to 125°C. When paired with a 12-V pull-up and appropriate current-limiting resistor (e.g., 1 kΩ for ~11 mA), it directly drives standard indicator LEDs. The 2.048-V reference (Pin 7) can also bias LED brightness control circuitry, as shown in typical application schematics where ADJUST connects to HYSTP/HYSTN for programmable on/off thresholds.
What is the temperature coefficient of the internal reference in the LMP7300MAX/NOPB?
The LMP7300MAX/NOPB's 2.048-V bandgap reference has a guaranteed temperature coefficient of ≤55 ppm/°C over −40°C to 125°C. This corresponds to a maximum drift of ±0.68 mV across the full range, contributing less than 0.033% error to the nominal 2.048-V output. The curvature-compensated design minimizes thermal nonlinearity, ensuring monotonic performance critical for precision ADC reference and stable hysteresis band setting.
Is the LMP7300MAX/NOPB pin-compatible with other members of the LMP family?
No - the LMP7300MAX/NOPB uses an 8-pin VSSOP (DGK) package with a unique pinout optimized for hysteresis control (HYSTP/HYSTN) and reference output (REF). Other LMP comparators (e.g., LMP7300 in SOIC-8) share functional equivalence but differ in thermal characteristics and board layout; the VSSOP variant is not mechanically or electrically pin-compatible with SOIC-8 versions due to different pad spacing and thermal pad configuration.
LMP7300MAX/NOPB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Series:
- LMP®, PowerWise®
- Packaging:
- Tape & Reel (TR)
- 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
LMP7300MAX/NOPB FAQ
1.How can I place an order for LMP7300MAX/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LMP7300MAX/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 LMP7300MAX/NOPB reliable?
The price and inventory of LMP7300MAX/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LMP7300MAX/NOPB is usually 5 days.
3.What payment methods are accepted for LMP7300MAX/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LMP7300MAX/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LMP7300MAX/NOPB?
LMP7300MAX/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LMP7300MAX/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 LMP7300MAX/NOPB?
For technical support, including LMP7300MAX/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LMP7300MAX/NOPB requirements.
6.How does Aetrix verify that LMP7300MAX/NOPB is sourced from the original manufacturer or authorized distributors?
All LMP7300MAX/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 LMP7300MAX/NOPB meets industry standards.
7.What is the process for return or replacement of LMP7300MAX/NOPB?
All LMP7300MAX/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LMP7300MAX/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 LMP7300MAX/NOPB part is unused and in its original packaging.
Return procedure for LMP7300MAX/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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