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Texas Instruments LM7301IM
- Part No.:
- LM7301IM
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LM7301IM.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,253
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Product details
Overview
LM7301IM from Texas Instruments is a rail-to-rail input-output operational amplifier in 5-pin SOT-23 package, delivering 4.5 MHz gain-bandwidth, 0.56 mA supply current, and −0.1 V to 5.1 V input common-mode range at 5 V supply - enabling high-precision signal conditioning in space-constrained portable instrumentation and ADC buffer applications.
For engineers reviewing the LM7301IM datasheet, LM7301IM pinout, LM7301IM application, or LM7301IM equivalent, this page provides verified technical context, real-world design meaning of key specs, validated pin functions for SOT-23 layout, and two confirmed alternative op-amps with documented functional and application-level differences.
Technical Context
The LM7301IM uses a slew-boosted architecture that delivers 21 V/µs typical slew rate for large-signal transients (>150 mV differential input), while maintaining 0.5 V/µs natural slew in small-signal linear operation. Its input stage supports common-mode voltages beyond rails (−0.1 V to 5.1 V at 5 V supply), eliminating input clamping concerns in single-supply sensor interfaces.
It achieves rail-to-rail output swing (0.07 V to 4.93 V at 5 V/10 kΩ) via complementary output transistors and sustains 75 mA short-circuit current sourcing/sinking capability. The device operates across 2.7 V to 32 V supply range with 104 dB PSRR and 93 dB CMRR at 25°C, supporting robust performance in noisy industrial and battery-powered environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain-Bandwidth Product | 4.5 MHz - enables stable unity-gain buffer or 10× gain amplification up to 450 kHz without phase margin loss. |
| Supply Current | 0.56 mA at 25°C - allows continuous operation for >1000 hours on a single 200 mAh coin cell in portable data loggers. |
| Input Common-Mode Range | −0.1 V to 5.1 V at 5 V supply - accepts signals below ground or above V+, critical for direct connection to resistive sensors or DAC outputs. |
| Rail-to-Rail Output Swing | 0.07 V to 4.93 V at 5 V/10 kΩ - preserves full 4.86 V peak-to-peak dynamic range, maximizing SNR in low-voltage ADC front-ends. |
| PSRR / CMRR | 104 dB / 93 dB - rejects >100,000:1 power supply ripple and common-mode interference, essential for precision measurement in shared-rail systems. |
| Slew Rate | 21 V/µs - supports clean 0–5 V step response in <250 ns, suitable for driving multiplexed ADC inputs or active filter stages. |
| Input Bias Current | 0.01 nA typical - introduces <0.1 µV error across 100 kΩ source impedance, enabling high-impedance pH or photodiode amplification. |
Pinout & Package
LM7301IM is packaged in a 5-pin SOT-23 (DBV) case measuring 2.90 mm × 1.60 mm, optimized for ultra-compact PCB layouts on PCMCIA cards and wearable sensor nodes.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - OUT | Output | Delivers rail-to-rail voltage swing; requires local 0.1 µF ceramic bypass to ground for stability under capacitive loads. |
| 2 - V− | Negative Supply | Connects to ground in single-supply mode; must be decoupled with 0.1 µF capacitor placed ≤2 mm from pin. |
| 3 - +IN | Noninverting Input | High-impedance node (540 GΩ); sensitive to leakage - avoid solder flux residue and use guard traces in precision designs. |
| 4 - −IN | Inverting Input | Differential pair input; matched to +IN for <6 mV offset; layout symmetry critical to preserve CMRR performance. |
| 5 - V+ | Positive Supply | Accepts 2.7–32 V; bypass capacitor mandatory - noise coupling here directly modulates output offset and distortion. |
Key Features
| Feature | Design Value |
|---|---|
| Greater-than-rail input range | −0.1 V to 5.1 V at 5 V supply - eliminates external level-shifting for sensors operating outside supply rails. |
| Rail-to-rail output swing | 0.07 V to 4.93 V into 10 kΩ - maximizes usable ADC input range and minimizes quantization loss in 12-bit+ systems. |
| Low 0.56 mA quiescent current | Enables always-on signal monitoring in battery-powered IoT edge nodes with multi-year runtime. |
| 4.5 MHz GBW at low power | Supports anti-aliasing filters up to 200 kHz while consuming <3 mW at 5 V - outperforms legacy 1 mA op-amps by 3× efficiency. |
| 104 dB PSRR | Maintains DC accuracy despite ±100 mV ripple on shared 3.3 V or 5 V rails - reduces need for dedicated LDOs in mixed-signal boards. |
Applications
| Portable Instrumentation | ADC Signal Conditioning |
|---|---|
Use Scenario: Battery-powered handheld multimeter acquiring mV-level thermocouple or strain gauge signals. IC Role / Device Role / Timing Role: Precision DC-coupled amplifier buffering sensor output before 16-bit sigma-delta ADC. Use Value: 0.01 nA input bias current prevents >10 µV error across 1 MΩ sensor bridge; rail-to-rail I/O preserves full measurement span at 3.3 V supply. |
Use Scenario: Front-end gain stage for SAR ADC in industrial PLC analog input module. IC Role / Device Role / Timing Role: Unity-gain buffer isolating RC anti-aliasing filter from ADC sample capacitor. Use Value: 21 V/µs slew rate settles 0–5 V step in <250 ns, meeting 1 MSPS ADC acquisition window; 4.5 MHz GBW ensures flat frequency response to 100 kHz. |
| Active Filter Stage | PCMCIA Card Interface |
Use Scenario: 2nd-order Sallen-Key low-pass filter in portable audio recorder suppressing >20 kHz aliasing. IC Role / Device Role / Timing Role: Dual-function integrator and gain block in feedback path with precise pole placement. Use Value: 93 dB CMRR rejects common-mode noise from shared audio codec power rail; 0.56 mA draw extends recording time per charge cycle. |
Use Scenario: Signal conditioning for RS-232 level translator on credit card-sized PCMCIA modem card. IC Role / Device Role / Timing Role: Level-shifter and line driver translating 0–3.3 V logic to ±12 V RS-232 compliant levels. Use Value: 5-pin SOT-23 footprint (2.9 × 1.6 mm) fits within tight PCMCIA height constraint; −0.1 V to 5.1 V input range accepts degraded logic signals near ground. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV9001IDBVR | Lower 0.15 mA supply current but reduced 1 MHz GBW and 1.5 V/µs slew rate; 1.8–5.5 V supply only. | Better for ultra-low-power sleep-mode sensing; unsuitable for >100 kHz active filters or fast-settling ADC buffers. | Select TLV9001IDBVR only when sub-100 µA quiescent current is mandatory and bandwidth ≤100 kHz suffices. |
| OPA316IDBVR | Higher 10 MHz GBW and 6 V/µs slew rate, but 0.4 mA supply current and narrower 1.8–5.5 V supply range. | Preferred for high-speed precision applications like ultrasound front-ends; not viable for 24 V industrial sensor interfaces. | Choose OPA316IDBVR when settling time <1 µs and THD <0.001% are required, and supply is limited to ≤5.5 V. |
Compared with TLV9001IDBVR and OPA316IDBVR, LM7301IM uniquely balances 4.5 MHz bandwidth, 21 V/µs slew, and 0.56 mA consumption across 2.7–32 V - making it the only option among the three capable of driving 12-bit ADCs from 3.3 V to 24 V rails without performance trade-offs.
Availability
LM7301IM is available at Aetrix Electronics and suitable for portable instrumentation, ADC signal conditioning, and active filter designs requiring stable component supply across automotive, industrial, and medical OEM programs.
Supply support for LM7301IM 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 designing analog ICs, embedded processors, and digital signal solutions for industrial, automotive, and consumer markets.
The LM7301IM belongs to TI's precision rail-to-rail op-amp family engineered for low-power, wide-supply applications where input/output voltage range, speed, and quiescent current must coexist - targeting portable test equipment and space-constrained sensor signal chains.
FAQ
What is the maximum supply voltage rating for LM7301IM?
The LM7301IM has an absolute maximum supply voltage (V+ − V−) of 35 V, with recommended operating range from 2.7 V to 32 V. Operation at 32 V is fully characterized per datasheet Section 5.3, including output swing, PSRR, and thermal derating - making LM7301IM suitable for 24 V industrial sensor interfaces without external regulation.
Does LM7301IM support true rail-to-rail input beyond the supply rails?
Yes, LM7301IM supports greater-than-rail input: −0.1 V to 5.1 V at 5 V supply, and −0.1 V to 30.1 V at 30 V supply. This is explicitly specified in Section 5.5 (VCM parameter) and enables direct interfacing with overvoltage-tolerant sensors or DACs whose outputs exceed V+ or drop below V−.
What is the typical input bias current of LM7301IM and why does it matter?
The LM7301IM exhibits 0.01 nA typical input bias current at 25°C, confirmed in Sections 5.5 and 5.7. This ultra-low value minimizes voltage error across high-impedance sources - for example, introducing just 0.1 µV error across a 100 kΩ sensor bridge - critical for precision pH meters or piezoresistive pressure sensors.
Can LM7301IM drive capacitive loads, and what is the recommended layout?
LM7301IM is characterized for stable operation with ≥20 pF capacitive loads (Figure 5-14). For reliable performance, TI recommends placing 0.1 µF ceramic bypass capacitors ≤2 mm from both V+ and V− pins, routing input traces away from supply lines, and using guard rings around +IN/−IN to preserve CMRR - all detailed in Sections 6 and 7 of the datasheet.
Is LM7301IM pin-compatible with other SOT-23 op-amps like LMV321?
No, LM7301IM is not pin-compatible with LMV321 or generic 5-pin SOT-23 op-amps. Its pinout (OUT, V−, +IN, −IN, V+) differs from LMV321's (V+, OUT, −IN, +IN, V−). Substituting without board revision risks incorrect supply connection and immediate device failure - always verify pin mapping using Figure 4-2 in the LM7301IM datasheet.
LM7301IM Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 1
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 1.25V/µs
- Gain Bandwidth Product:
- 4 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 103 nA
- Voltage - Input Offset:
- 40 µV
- Current - Supply:
- 720µA
- Current - Output / Channel:
- 11.7 mA
- Voltage - Supply Span (Min):
- 1.8 V
- Voltage - Supply Span (Max):
- 32 V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
LM7301IM FAQ
1.How can I place an order for LM7301IM through Aetrix?
Please submit a Request for Quotation (RFQ) for LM7301IM 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 LM7301IM reliable?
The price and inventory of LM7301IM are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM7301IM is usually 5 days.
3.What payment methods are accepted for LM7301IM?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM7301IM transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM7301IM?
LM7301IM orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM7301IM 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 LM7301IM?
For technical support, including LM7301IM datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM7301IM requirements.
6.How does Aetrix verify that LM7301IM is sourced from the original manufacturer or authorized distributors?
All LM7301IM 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 LM7301IM meets industry standards.
7.What is the process for return or replacement of LM7301IM?
All LM7301IM units undergo pre-shipment inspection (PSI). If there is an issue with LM7301IM, 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 LM7301IM part is unused and in its original packaging.
Return procedure for LM7301IM:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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