THS4051CDR Equivalent & Substitute Parts

Part Overview

The THS4051CDR is a voltage feedback amplifier manufactured by Texas Instruments, housed in an 8-SOIC surface mount package. This single-circuit operational amplifier is designed for applications requiring high slew rate performance and moderate bandwidth. The part is currently in active production status with full RoHS3 compliance and unlimited moisture sensitivity rating. Equivalent and substitute parts are identified based on matching electrical performance parameters, package compatibility, and operational specifications within the defined supply voltage and temperature ranges.

Key Parameters

Parameter	Value	Unit
Amplifier Type	Voltage Feedback	—
Number of Circuits	1	—
Slew Rate	240	V/µs
-3dB Bandwidth	70	MHz
Current - Input Bias	2.5	µA
Voltage - Input Offset	2.5	mV
Current - Supply	8.5	mA
Current - Output / Channel	100	mA
Voltage - Supply Span (Min)	9	V
Voltage - Supply Span (Max)	32	V
Operating Temperature	0 to 70	°C
Package / Case	8-SOIC (0.154", 3.90mm Width)	—
Mounting Type	Surface Mount	—
RoHS Status	ROHS3 Compliant	—

Substitute Part Grouping Explanation

Substitution eligibility for the THS4051CDR is determined by the following critical parameters:

Package Compatibility: All substitute parts must use the 8-SOIC surface mount package with 0.154" (3.90mm) width to ensure mechanical and electrical compatibility with existing PCB layouts.

Supply Voltage Range: Substitute parts must operate within or encompass the 9V to 32V supply span of the main part. Parts with narrower ranges may be acceptable if the application operates within their specified limits.

Operating Temperature: All substitutes must support the 0°C to 70°C operating temperature range.

Electrical Performance: Slew rate, bandwidth, input bias current, input offset voltage, supply current, and output current are key differentiators. Substitutes with equal or superior performance in these parameters are functionally compatible.

Compliance & Status: All parts must maintain active production status and RoHS3 compliance to ensure long-term availability and regulatory conformance.

The identified substitutes—AD847JRZ, AD847JRZ-REEL7, LT1220CS8#PBF, and LT1220CS8#TRPBF—meet these criteria with variations in packaging format (Tube, Cut Tape & Digi-Reel, Tape & Reel) and minor electrical parameter differences.

Parameter Comparison

Parameter	THS4051CDR	AD847JRZ	AD847JRZ-REEL7	LT1220CS8#PBF	LT1220CS8#TRPBF
Manufacturer	Texas Instruments	Analog Devices Inc.	Analog Devices Inc.	Analog Devices Inc.	Analog Devices Inc.
Amplifier Type	Voltage Feedback	General Purpose	General Purpose	General Purpose	General Purpose
Number of Circuits	1	1	1	1	1
Slew Rate (V/µs)	240	300	300	250	250
Bandwidth (MHz)	70	50	50	45	45
Current - Input Bias (µA)	2.5	3.3	3.3	0.1	0.1
Voltage - Input Offset (mV)	2.5	0.5	0.5	0.5	0.5
Current - Supply (mA)	8.5	5.3	5.3	8	8
Current - Output / Channel (mA)	100	32	32	26	26
Voltage - Supply Span Min (V)	9	9	9	10	10
Voltage - Supply Span Max (V)	32	36	36	30	30
Operating Temperature (°C)	0 to 70	0 to 70	0 to 70	0 to 70	0 to 70
Package / Case	8-SOIC	8-SOIC	8-SOIC	8-SOIC	8-SOIC
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Product Status	Active	Active	Active	Active	Active

Engineering Selection Recommendations

AD847JRZ and AD847JRZ-REEL7: These Analog Devices general-purpose amplifiers provide higher slew rate (300V/µs versus 240V/µs) and extended maximum supply voltage (36V versus 32V). Input offset voltage is superior at 0.5mV. However, output current capability is reduced to 32mA. The AD847JRZ-REEL7 variant offers Cut Tape & Digi-Reel packaging, while AD847JRZ is supplied in Tube format. Both maintain active production status and full RoHS3 compliance. Selection between these two depends on procurement and assembly requirements.

LT1220CS8#PBF and LT1220CS8#TRPBF: These Analog Devices C-Load™ series amplifiers feature exceptionally low input bias current (100nA versus 2.5µA), making them suitable for high-impedance input applications. Slew rate is 250V/µs and bandwidth is 45MHz. Maximum supply voltage is limited to 30V. Output current is 26mA. The LT1220CS8#PBF is supplied in Tube packaging, while LT1220CS8#TRPBF uses Tape & Reel format. Both are active products with RoHS3 compliance. Selection depends on packaging requirements and whether the reduced output current and bandwidth are acceptable for the application.

Packaging Considerations: The THS4051CDR is supplied in Tape & Reel format. Direct packaging equivalents are LT1220CS8#TRPBF (Tape & Reel) and AD847JRZ-REEL7 (Cut Tape & Digi-Reel). Alternative packaging formats (Tube) are available with AD847JRZ and LT1220CS8#PBF but may require process adjustments.

Supply Voltage Constraints: Applications operating at supply voltages above 30V must use either the THS4051CDR or AD847JRZ/AD847JRZ-REEL7 variants. The LT1220 series is limited to 30V maximum.

Frequently Asked Questions (FAQ)

Q: Can AD847JRZ directly replace THS4051CDR in all applications?

A: AD847JRZ is mechanically and electrically compatible in 8-SOIC surface mount applications. However, the reduced output current (32mA versus 100mA) must be verified against load requirements. The higher slew rate and lower input offset voltage are performance improvements. Packaging format differs (Tube versus Tape & Reel), which may affect procurement and assembly processes.

Q: What is the key difference between AD847JRZ and AD847JRZ-REEL7?

A: Both parts are electrically identical. The difference is packaging format: AD847JRZ uses Tube packaging, while AD847JRZ-REEL7 uses Cut Tape & Digi-Reel format. Selection depends on assembly equipment compatibility and procurement preferences.

Q: Why do LT1220 variants have lower output current than THS4051CDR?

A: The LT1220 series is optimized for general-purpose applications with emphasis on low input bias current (100nA) rather than high output drive capability. Applications requiring 100mA output current must use THS4051CDR or verify that LT1220's 26mA output is sufficient for the specific load.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All identified substitutes—AD847JRZ, AD847JRZ-REEL7, LT1220CS8#PBF, and LT1220CS8#TRPBF—are RoHS3 compliant with unlimited moisture sensitivity rating (MSL 1), matching the compliance profile of THS4051CDR.

Q: What is the impact of supply voltage range differences?

A: THS4051CDR operates from 9V to 32V. AD847JRZ variants extend to 36V maximum, providing additional headroom for high-voltage applications. LT1220 variants are limited to 30V maximum. Applications operating above 30V must use THS4051CDR or AD847JRZ variants.

Q: Can I use LT1220CS8#PBF (Tube) instead of THS4051CDR (Tape & Reel)?

A: Electrically and mechanically, yes. However, Tube packaging requires different handling and assembly processes compared to Tape & Reel. Verify that your assembly equipment and procurement workflow support Tube format before substitution.

Q: Which substitute offers the best input offset voltage performance?

A: Both AD847JRZ variants and LT1220 variants offer 0.5mV input offset voltage, compared to 2.5mV for THS4051CDR. This represents a 5-fold improvement and is beneficial for precision analog applications.

Q: Is bandwidth reduction from 70MHz to 45MHz or 50MHz significant?

A: Bandwidth reduction depends on application requirements. For applications operating below 45MHz, LT1220 variants are suitable. For applications requiring 50MHz to 70MHz bandwidth, AD847JRZ variants (50MHz) or THS4051CDR (70MHz) are required.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message