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LT1230CS#PBF Equivalent & Substitute Parts
Part Overview
The LT1230CS#PBF is a current feedback amplifier integrated circuit manufactured by Analog Devices Inc., containing four independent amplifier circuits in a 14-SOIC surface mount package. This device is classified as Last Time Buy, indicating discontinued production with limited availability. The part operates across a 4V to 30V supply range with a slew rate of 700V/µs and -3dB bandwidth of 100 MHz, making it suitable for high-speed signal conditioning applications.
Identification of equivalent and substitute parts is necessary due to the Last Time Buy status of the LT1230CS#PBF. Alternative components with compatible electrical and mechanical specifications ensure design continuity and long-term supply chain reliability.
Substiute Parts
Key Parameters
| Parameter | LT1230CS#PBF |
|---|---|
| Amplifier Type | Current Feedback |
| Number of Circuits | 4 |
| Slew Rate | 700 V/µs |
| -3dB Bandwidth | 100 MHz |
| Current - Input Bias | 10 µA |
| Voltage - Input Offset | 3 mV |
| Current - Supply (x4 Channels) | 6 mA |
| Current - Output / Channel | 125 mA |
| Voltage - Supply Span (Min) | 4 V |
| Voltage - Supply Span (Max) | 30 V |
| Operating Temperature | 0°C ~ 70°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
Substitution of the LT1230CS#PBF is determined by compatibility across the following critical parameters: number of circuits (4), surface mount packaging in 14-SOIC or 16-SOIC form factors, supply voltage range overlap, operating temperature range, and RoHS3 compliance status.
The substitute parts are grouped into two categories based on amplifier topology and electrical performance:
Category 1: Voltage Feedback Topology The LT1365CS#PBF operates as a voltage feedback amplifier with enhanced slew rate (1000V/µs) and higher supply voltage maximum (36V). This part maintains four independent circuits and 16-SOIC packaging with compatible supply voltage minimums (5V vs. 4V for the main part).
Category 2: General Purpose Topology The ADA4077-4ARZ, ADA4077-4ARZ-R7, and ADA4077-4ARZ-RL are general purpose amplifiers with identical 14-SOIC packaging and four circuits. These parts differ in packaging format (Tube, Cut Tape & Digi-Reel, and Tape & Reel respectively) but share identical electrical specifications. Extended operating temperature range (-40°C to 125°C) and lower supply current (400µA vs. 6mA) characterize this family.
Category 3: Audio Amplifier Topology The TS524IDT is an audio amplifier from STMicroelectronics with four circuits in 14-SOIC packaging, offering extended operating temperature range and compatible supply voltage specifications.
Parameter Comparison
| Parameter | LT1230CS#PBF | LT1365CS#PBF | ADA4077-4ARZ | ADA4077-4ARZ-R7 | ADA4077-4ARZ-RL | TS524IDT |
|---|---|---|---|---|---|---|
| Manufacturer | Analog Devices Inc. | Analog Devices Inc. | Analog Devices Inc. | Analog Devices Inc. | Analog Devices Inc. | STMicroelectronics |
| Amplifier Type | Current Feedback | Voltage Feedback | General Purpose | General Purpose | General Purpose | Audio |
| Number of Circuits | 4 | 4 | 4 | 4 | 4 | 4 |
| Slew Rate | 700 V/µs | 1000 V/µs | 1.2 V/µs | 1.2 V/µs | 1.2 V/µs | 7 V/µs |
| Current - Input Bias | 10 µA | 600 nA | 400 pA | 400 pA | 400 pA | 250 nA |
| Voltage - Input Offset | 3 mV | 500 µV | 15 µV | 15 µV | 15 µV | 950 µV |
| Current - Supply (x4 Channels) | 6 mA | 6.3 mA | 400 µA | 400 µA | 400 µA | 8 mA |
| Current - Output / Channel | 125 mA | 60 mA | 10 mA | 10 mA | 10 mA | 37 mA |
| Voltage - Supply Span (Min) | 4 V | 5 V | 5 V | 5 V | 5 V | 5 V |
| Voltage - Supply Span (Max) | 30 V | 36 V | 30 V | 30 V | 30 V | 30 V |
| Operating Temperature | 0°C ~ 70°C | 0°C ~ 70°C | -40°C ~ 125°C | -40°C ~ 125°C | -40°C ~ 125°C | -40°C ~ 125°C |
| Package / Case | 14-SOIC | 16-SOIC | 14-SOIC | 14-SOIC | 14-SOIC | 14-SOIC |
| Mounting Type | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount |
| RoHS Status | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) |
| Product Status | Last Time Buy | Active | Active | Active | Active | Active |
Engineering Selection Recommendations
LT1365CS#PBF is the manufacturer-recommended substitute for the LT1230CS#PBF. Both devices are produced by Analog Devices Inc. and maintain Active product status for the LT1365CS#PBF. The LT1365CS#PBF provides superior slew rate performance (1000V/µs vs. 700V/µs) and extended maximum supply voltage (36V vs. 30V). The transition from 14-SOIC to 16-SOIC packaging requires PCB layout modification. Both parts are ROHS3 compliant with MSL 1 rating.
ADA4077-4ARZ, ADA4077-4ARZ-R7, and ADA4077-4ARZ-RL are functionally identical general purpose amplifiers differing only in packaging format. All three maintain Active product status and ROHS3 compliance. The ADA4077-4ARZ-RL variant offers the highest inventory availability (25,714 pcs) in Tape & Reel format. These parts retain the 14-SOIC package footprint, eliminating PCB redesign requirements. Extended operating temperature range (-40°C to 125°C) accommodates broader environmental specifications. Lower supply current consumption (400µA vs. 6mA) reduces power dissipation in multi-channel applications.
TS524IDT from STMicroelectronics maintains 14-SOIC packaging and Active product status with ROHS3 compliance. This audio amplifier topology provides intermediate slew rate performance (7V/µs) and extended operating temperature range. Current output per channel (37mA) falls between the LT1230CS#PBF and ADA4077 variants.
All substitute parts maintain ROHS3 compliance and MSL 1 moisture sensitivity ratings, ensuring compatibility with standard manufacturing and storage protocols.
Frequently Asked Questions (FAQ)
Q: Can the LT1365CS#PBF directly replace the LT1230CS#PBF without PCB modifications?
A: The LT1365CS#PBF uses 16-SOIC packaging versus the 14-SOIC of the LT1230CS#PBF. PCB layout modification is required to accommodate the different pin count and package dimensions. Pin-to-pin compatibility does not exist between these packages.
Q: What is the primary difference between the LT1230CS#PBF and ADA4077 variants?
A: The LT1230CS#PBF employs current feedback topology with 700V/µs slew rate and 100 MHz bandwidth, while ADA4077 variants use general purpose topology with 1.2V/µs slew rate and 3.6 MHz gain bandwidth product. The ADA4077 family offers lower supply current (400µA vs. 6mA) and extended operating temperature range (-40°C to 125°C vs. 0°C to 70°C).
Q: Are ADA4077-4ARZ, ADA4077-4ARZ-R7, and ADA4077-4ARZ-RL electrically identical?
A: Yes. These three part numbers are electrically identical. The suffixes indicate packaging format only: ADA4077-4ARZ is supplied in Tube, ADA4077-4ARZ-R7 in Cut Tape & Digi-Reel, and ADA4077-4ARZ-RL in Tape & Reel. All maintain identical electrical specifications and 14-SOIC package footprint.
Q: Does the TS524IDT maintain the same package footprint as the LT1230CS#PBF?
A: Yes. The TS524IDT uses 14-SOIC packaging identical to the LT1230CS#PBF, eliminating PCB redesign requirements. Pin configuration differences must be verified against application schematics prior to substitution.
Q: What supply voltage range is common across all substitute parts?
A: The minimum supply voltage across all substitutes is 5V, while the LT1230CS#PBF operates at 4V minimum. Applications requiring 4V operation cannot use substitute parts without supply voltage modification. Maximum supply voltage of 30V is common to all parts except LT1365CS#PBF, which extends to 36V.
Q: Are all substitute parts ROHS3 compliant?
A: Yes. All listed substitute parts maintain ROHS3 compliance and MSL 1 moisture sensitivity rating, matching the environmental and regulatory specifications of the LT1230CS#PBF.
Q: Which substitute part offers the highest output current per channel?
A: The LT1230CS#PBF provides 125 mA per channel. Among substitutes, the LT1365CS#PBF offers 60 mA per channel, TS524IDT provides 37 mA per channel, and ADA4077 variants provide 10 mA per channel. Output current requirements determine suitability for load-driving applications.
Q: What is the inventory status of available substitutes?
A: LT1365CS#PBF has 1,563 pcs available. ADA4077-4ARZ has 2,268 pcs, ADA4077-4ARZ-R7 has 15,546 pcs, ADA4077-4ARZ-RL has 25,714 pcs, and TS524IDT has 3,060 pcs in stock. The ADA4077-4ARZ-RL variant offers the highest availability.
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