TLV2785IDR Equivalent & Substitute Parts

Part Overview

The TLV2785IDR is a general purpose operational amplifier manufactured by Texas Instruments, featuring four independent amplifier circuits in a 16-SOIC surface mount package. This device is designed for rail-to-rail output operation across a supply voltage range of 1.8V to 3.6V, making it suitable for low-voltage analog signal processing applications.

The TLV2785IDR is classified as an obsolete product. Identifying equivalent and substitute parts is necessary to maintain design continuity, ensure supply chain reliability, and support long-term production requirements for systems currently utilizing this component.

Substiute Parts

TLV2785IDR

Texas InstrumentsIn Stock: 919TLV2785IDR Datasheet

Current PartRFQ

LT1212IS#TRPBF

Analog Devices Inc.In Stock: 932LT1212IS#TRPBF Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the TLV2785IDR is determined by the following critical parameters:

Functional Requirements:

• Number of circuits: 4 independent amplifier channels
• Amplifier classification: General purpose operational amplifier
• Package type: 16-SOIC surface mount configuration
• Mounting compatibility: Surface mount technology

Electrical Performance Criteria:

• Slew rate: Minimum 5V/µs
• Gain bandwidth product: Minimum 8 MHz
• Input bias current: Maximum 2.5 pA
• Input offset voltage: Maximum 250 µV
• Output current per channel: Minimum 23 mA
• Supply voltage range: Minimum 1.8V to maximum 3.6V
• Operating temperature: -40°C to 125°C

Compliance & Regulatory:

• RoHS3 compliance required
• MSL rating: 1 (Unlimited)
• REACH unaffected status

The LT1212IS#TRPBF qualifies as a substitute based on matching the core functional architecture (4-circuit general purpose amplifier in 16-SOIC package) while meeting or exceeding the specified electrical performance parameters within the allowed substitution criteria.

Parameter Comparison

Engineering Selection Recommendations

Product Status Consideration: The TLV2785IDR is classified as obsolete, while the LT1212IS#TRPBF maintains active product status. Active status ensures ongoing manufacturer support, availability, and compliance with current regulatory requirements.

Compliance & Certification: Both the TLV2785IDR and LT1212IS#TRPBF are ROHS3 compliant and carry MSL rating 1 (Unlimited), indicating equivalent environmental and handling compliance. Both devices are REACH unaffected and classified under ECCN EAR99 and HTSUS 8542.33.0001.

Package Compatibility: Both devices utilize identical 16-SOIC surface mount packaging (0.154", 3.90mm width), enabling direct physical substitution on existing printed circuit boards without layout modifications.

Electrical Performance: The LT1212IS#TRPBF exceeds the TLV2785IDR specifications in slew rate (7V/µs vs. 5V/µs), gain bandwidth product (14 MHz vs. 8 MHz), and output current per channel (50 mA vs. 23 mA). The substitute device demonstrates lower input offset voltage (150 µV vs. 250 µV). These performance enhancements are compatible with applications designed for the TLV2785IDR.

Supply Voltage Range: The TLV2785IDR operates within 1.8V to 3.6V. The LT1212IS#TRPBF operates within 2.5V to 36V. Applications requiring operation below 2.5V require design verification to confirm compatibility with the substitute part's minimum supply voltage specification.

Operating Temperature: The TLV2785IDR supports -40°C to 125°C operation. The LT1212IS#TRPBF supports -40°C to 85°C operation. Applications requiring operation above 85°C are not compatible with the substitute device.

Frequently Asked Questions (FAQ)

Q: Can the LT1212IS#TRPBF directly replace the TLV2785IDR in existing designs?

A: Physical substitution is possible due to identical 16-SOIC packaging. However, electrical compatibility must be verified. The LT1212IS#TRPBF requires a minimum supply voltage of 2.5V (versus 1.8V for the TLV2785IDR) and supports maximum operating temperature of 85°C (versus 125°C for the TLV2785IDR). Designs operating below 2.5V or above 85°C require alternative solutions.

Q: What are the key electrical differences between these devices?

A: The LT1212IS#TRPBF provides superior performance in slew rate (7V/µs vs. 5V/µs), gain bandwidth product (14 MHz vs. 8 MHz), and output current capability (50 mA vs. 23 mA per channel). Input offset voltage is lower in the substitute (150 µV vs. 250 µV). Supply current consumption is higher in the LT1212IS#TRPBF (1.8 mA vs. 650 µA for all four channels).

Q: Are both devices RoHS compliant?

A: Yes. Both the TLV2785IDR and LT1212IS#TRPBF are ROHS3 compliant with MSL rating 1 (Unlimited), indicating equivalent environmental compliance and unlimited shelf life under controlled storage conditions.

Q: What is the significance of the TLV2785IDR being obsolete?

A: Obsolete status indicates the manufacturer has discontinued production and support. The LT1212IS#TRPBF maintains active status, ensuring continued availability, technical support, and compliance with evolving regulatory standards. Active status is preferred for new designs and long-term production requirements.

Q: Are there packaging differences between these parts?

A: Both devices are supplied in 16-SOIC surface mount packages with identical physical dimensions (0.154", 3.90mm width). The TLV2785IDR is supplied in standard packaging, while the LT1212IS#TRPBF is supplied in Tape & Reel (TR) format. This difference affects handling and assembly processes but does not impact electrical performance or physical compatibility.

Q: What supply voltage range should be used for the LT1212IS#TRPBF?

A: The LT1212IS#TRPBF operates within 2.5V to 36V. The TLV2785IDR operates within 1.8V to 3.6V. Applications designed for the TLV2785IDR operating at 1.8V or 2.0V require verification that the substitute device's 2.5V minimum specification is compatible with system requirements.

Q: How do input bias current specifications compare?

A: The TLV2785IDR specifies 2.5 pA input bias current, while the LT1212IS#TRPBF specifies 50 nA. The substitute device exhibits higher input bias current. Applications with high-impedance input stages or precision transimpedance configurations may require circuit analysis to confirm compatibility.