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LMV344IDG4 Equivalent & Substitute Parts
Part Overview
The LMV344IDG4 is a CMOS amplifier integrated circuit manufactured by Texas Instruments, featuring four independent rail-to-rail operational amplifier circuits in a 14-SOIC surface mount package. This device is designed for low-power, general-purpose analog signal conditioning applications requiring rail-to-rail output capability across a 2.5 V to 5.5 V supply range.
The LMV344IDG4 is currently discontinued at DiGi Electronics. Equivalent and substitute parts are necessary to maintain design continuity, ensure component availability, and support ongoing production requirements. Alternative models within the same functional category provide comparable performance characteristics while maintaining compatibility with existing circuit designs.
Substiute Parts
Key Parameters
| Parameter | Value | Unit |
|---|---|---|
| Amplifier Type | CMOS | — |
| Number of Circuits | 4 | — |
| Output Type | Rail-to-Rail | — |
| Slew Rate | 1 | V/µs |
| Gain Bandwidth Product | 1 | MHz |
| Current - Input Bias | 1 | pA |
| Voltage - Input Offset | 250 | µV |
| Current - Supply (x4 Channels) | 107 | µA |
| Current - Output / Channel | 113 | mA |
| Voltage - Supply Span (Min) | 2.5 | V |
| Voltage - Supply Span (Max) | 5.5 | V |
| Operating Temperature | -40 to 125 | °C |
| Package / Case | 14-SOIC (0.154", 3.90mm Width) | — |
| Mounting Type | Surface Mount | — |
| RoHS Status | ROHS3 Compliant | — |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) | — |
Substitute Part Grouping Explanation
Substitute parts for the LMV344IDG4 are selected based on strict electrical and mechanical compatibility criteria. The primary substitution parameters are:
Critical Matching Parameters:
- Number of Circuits: 4 independent amplifier channels
- Output Type: Rail-to-Rail capability
- Package Type: 14-SOIC surface mount form factor
- Supply Voltage Range: Minimum 2.5 V to 5.5 V maximum
- Operating Temperature Range: -40°C to 125°C
- Amplifier Type: CMOS or General Purpose operational amplifiers
Secondary Compatibility Parameters:
- Slew Rate: 1 V/µs or greater
- Gain Bandwidth Product: 1 MHz or greater
- Input Bias Current: 1 pA to 3 pA range
- Input Offset Voltage: 250 µV to 500 µV range
- Supply Current: 90 µA to 107 µA per channel
- Output Current: 12 mA to 113 mA per channel
Substitute parts are grouped into two categories: direct Texas Instruments LMV344 series variants with identical electrical specifications, and cross-manufacturer alternatives from Analog Devices, Renesas Electronics, and Rohm Semiconductor that meet the core functional requirements while maintaining package compatibility and operating parameter ranges.
Parameter Comparison
| Part Number | Manufacturer | Amplifier Type | Slew Rate (V/µs) | GBW (MHz) | Input Bias (pA) | Input Offset (µV) | Supply Current (µA) | Output Current (mA) | Supply Min (V) | Supply Max (V) | Temp Range (°C) | Package | Status |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| LMV344IDG4 | Texas Instruments | CMOS | 1 | 1 | 1 | 250 | 107 | 113 | 2.5 | 5.5 | -40 to 125 | 14-SOIC | Discontinued |
| LMV344MA/NOPB | Texas Instruments | CMOS | 1 | 1 | 0.02 | 700 | 107 | 113 | 2.7 | 5.5 | -40 to 125 | 14-SOIC | Active |
| LMV344MAX/NOPB | Texas Instruments | CMOS | 1 | 1 | 0.02 | 700 | 107 | 113 | 2.7 | 5.5 | -40 to 125 | 14-SOIC | Active |
| LMV344ID | Texas Instruments | CMOS | 1 | 1 | 1 | 250 | 107 | 113 | 2.5 | 5.5 | -40 to 125 | 14-SOIC | Last Time Buy |
| AD8694ARZ-REEL7 | Analog Devices Inc. | General Purpose | 5 | 10 | 1 | 400 | 950 | 80 | 2.7 | 6 | -40 to 125 | 14-SOIC | Active |
| BU7244F-E2 | Rohm Semiconductor | CMOS | 0.4 | 0.9 | 1 | 1000 | 360 | 12 | 1.8 | 5.5 | -40 to 85 | 14-SOP | Active |
| BU7487F-E2 | Rohm Semiconductor | CMOS | 10 | 10 | 1 | 1000 | 6 | 12 | 3 | 5.5 | -40 to 105 | 14-SOP | Active |
| ISL28413FBZ | Renesas Electronics | General Purpose | 1 | 2 | 3 | 500 | 90 | 22 | 1.8 | 5.5 | -40 to 125 | 14-SOIC | Active |
| ISL28413FBZ-T7 | Renesas Electronics | General Purpose | 1 | 2 | 3 | 500 | 90 | 22 | 1.8 | 5.5 | -40 to 125 | 14-SOIC | Active |
| LMR934F-GE2 | Rohm Semiconductor | General Purpose | 0.35 | 1.4 | 5000 | 1000 | 250 | 90 | 1.8 | 5 | -40 to 85 | 14-SOP | Active |
| LMV324ID | Texas Instruments | General Purpose | 1 | 1 | 15000 | 1700 | 410 | 40 | 2.7 | 5.5 | -40 to 125 | 14-SOIC | Last Time Buy |
Engineering Selection Recommendations
Primary Substitutes (Highest Compatibility):
The LMV344MA/NOPB and LMV344MAX/NOPB are direct Texas Instruments alternatives to the LMV344IDG4. Both parts maintain identical electrical performance specifications, package form factor, and operating temperature range. The primary difference is packaging format: LMV344MA/NOPB is supplied in Tube packaging, while LMV344MAX/NOPB is supplied in Tape & Reel format. Both parts are currently Active status with higher inventory availability than the discontinued LMV344IDG4. These substitutes are recommended for direct replacement in existing designs without circuit modification.
The LMV344ID is a Texas Instruments variant with identical electrical specifications to the LMV344IDG4, including the same 250 µV input offset voltage and 1 pA input bias current. However, LMV344ID is designated Last Time Buy status, indicating limited future availability. This part is suitable for immediate substitution but should not be considered for long-term production planning.
Secondary Substitutes (Functional Equivalents):
The ISL28413FBZ and ISL28413FBZ-T7 from Renesas Electronics Corporation provide functional equivalence with compatible 14-SOIC packaging and -40°C to 125°C operating temperature range. These parts feature 1 V/µs slew rate and 2 MHz gain bandwidth product, exceeding the LMV344IDG4 specifications. Input bias current is 3 pA and input offset voltage is 500 µV, both within acceptable substitution parameters. Supply current is 90 µA, slightly lower than the original part. Both ISL28413 variants are Active status with good inventory availability.
The AD8694ARZ-REEL7 from Analog Devices Inc. is a general-purpose amplifier with enhanced performance characteristics: 5 V/µs slew rate and 10 MHz gain bandwidth product. This part maintains 14-SOIC packaging and -40°C to 125°C operating temperature range. However, supply current is 950 µA per channel, significantly higher than the LMV344IDG4. This substitute is suitable for applications where higher bandwidth and slew rate are beneficial and increased power consumption is acceptable.
Limited Compatibility Substitutes:
The BU7244F-E2 and BU7487F-E2 from Rohm Semiconductor use 14-SOP packaging (0.173" width) rather than 14-SOIC (0.154" width), requiring PCB layout verification for mechanical compatibility. The BU7244F-E2 operates at reduced temperature range (-40°C to 85°C) and has lower slew rate (0.4 V/µs) and gain bandwidth product (900 kHz). The BU7487F-E2 offers higher performance (10 V/µs slew rate, 10 MHz bandwidth) but requires minimum 3 V supply voltage.
The LMR934F-GE2 from Rohm Semiconductor uses 14-SOP packaging and operates at reduced temperature range (-40°C to 85°C). Input bias current is 5 nA and input offset voltage is 1 mV, both significantly higher than the LMV344IDG4.
The LMV324ID from Texas Instruments is a general-purpose amplifier with significantly different electrical characteristics: 15 nA input bias current and 1.7 mV input offset voltage. This part is designated Last Time Buy status.
Compliance and Certification:
All listed substitute parts maintain ROHS3 compliance and REACH unaffected status, consistent with the original LMV344IDG4. Moisture sensitivity level is MSL 1 (Unlimited) for all Texas Instruments and Rohm Semiconductor parts. Renesas Electronics ISL28413 variants specify MSL 2 (1 Year), requiring appropriate handling and storage protocols.
Frequently Asked Questions (FAQ)
Q: Can LMV344MA/NOPB or LMV344MAX/NOPB be used as direct replacements for LMV344IDG4?
A: Yes. Both parts are Texas Instruments LMV344 series variants with identical electrical specifications, including 1 V/µs slew rate, 1 MHz gain bandwidth product, 1 pA input bias current, and 250 µV input offset voltage. The primary difference is packaging format (Tube versus Tape & Reel). Both are currently Active status and compatible with existing circuit designs without modification.
Q: What is the difference between LMV344MA/NOPB and LMV344MAX/NOPB?
A: The electrical specifications are identical. LMV344MA/NOPB is supplied in Tube packaging, while LMV344MAX/NOPB is supplied in Tape & Reel (TR) format. Selection depends on assembly process requirements and inventory management preferences.
Q: Why does the LMV344ID have the same specifications as LMV344IDG4 but different part numbers?
A: The LMV344ID and LMV344IDG4 share identical electrical specifications and package type. The suffix designations indicate different manufacturing dates or packaging batches. LMV344ID is designated Last Time Buy, indicating limited future availability.
Q: Can ISL28413FBZ be used instead of LMV344IDG4?
A: Yes, with design verification. The ISL28413FBZ maintains compatible 14-SOIC packaging and -40°C to 125°C operating temperature range. Electrical differences include higher gain bandwidth product (2 MHz versus 1 MHz) and higher input offset voltage (500 µV versus 250 µV). These differences are within acceptable substitution parameters for most applications. Verify input offset voltage tolerance in precision analog circuits.
Q: What are the packaging differences between 14-SOIC and 14-SOP?
A: Both are 14-pin surface mount packages with similar footprints. The primary difference is body width: 14-SOIC is 0.154" (3.90mm) wide, while 14-SOP is 0.173" (4.40mm) wide. PCB layout verification is required before substituting BU7244F-E2 or BU7487F-E2 to ensure mechanical compatibility with existing pad patterns.
Q: Why is AD8694ARZ-REEL7 supply current significantly higher than LMV344IDG4?
A: The AD8694ARZ-REEL7 is a general-purpose amplifier with enhanced performance specifications: 5 V/µs slew rate and 10 MHz gain bandwidth product compared to 1 V/µs and 1 MHz for the LMV344IDG4. Higher performance characteristics require increased quiescent current (950 µA versus 107 µA per channel). This substitute is suitable for applications where bandwidth and slew rate requirements justify increased power consumption.
Q: Are there temperature range limitations with substitute parts?
A: Yes. The BU7244F-E2, BU7487F-E2, and LMR934F-GE2 operate at reduced temperature range (-40°C to 85°C or -40°C to 105°C) compared to the LMV344IDG4 (-40°C to 125°C). These substitutes are not suitable for applications requiring full -40°C to 125°C operation. The ISL28413FBZ, ISL28413FBZ-T7, LMV344MA/NOPB, LMV344MAX/NOPB, and AD8694ARZ-REEL7 maintain the full -40°C to 125°C operating range.
Q: What is the significance of MSL 2 (1 Year) for ISL28413 parts?
A: Moisture Sensitivity Level 2 requires that components be used within one year of the manufacturing date if exposed to ambient conditions. This requires more stringent storage and handling protocols compared to MSL 1 (Unlimited). Verify component age and implement appropriate moisture control procedures during assembly.
Q: Can BU7487F-E2 be used in applications requiring 2.5 V minimum supply voltage?
A: No. The BU7487F-E2 requires minimum 3 V supply voltage, making it incompatible with designs operating at 2.5 V. The LMV344IDG4 supports 2.5 V minimum supply. Verify supply voltage requirements before selecting this substitute.
Q: What is Last Time Buy status and how does it affect component selection?
A: Last Time Buy status indicates that the manufacturer will no longer produce the part after a specified date. Existing inventory may be available for a limited period, but long-term availability is not guaranteed. Parts designated Last Time Buy (LMV344ID, LMV324ID) should not be selected for new designs or long-term production planning. Active status parts (LMV344MA/NOPB, LMV344MAX/NOPB, ISL28413FBZ, ISL28413FBZ-T7, AD8694ARZ-REEL7, BU7244F-E2, BU7487F-E2, LMR934F-GE2) are recommended for ongoing production.
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