TS1872AIST Equivalent & Substitute Parts

Part Overview

The TS1872AIST is a general-purpose operational amplifier manufactured by STMicroelectronics, configured as a dual-channel (2 circuit) rail-to-rail amplifier in an 8-MiniSO surface mount package. This device is classified as Active product status and is ROHS3 compliant. The TS1872AIST is suitable for low-power analog signal conditioning, filtering, and amplification applications requiring compact form factors and extended temperature operation from -40°C to 125°C.

Equivalent and substitute parts are identified when alternative manufacturers offer dual-channel operational amplifiers with compatible electrical characteristics, matching package footprints, and equivalent functional performance. Substitution becomes necessary due to supply chain availability, design optimization requirements, or performance specification alignment with specific application demands.

Key Parameters

Parameter	TS1872AIST Value	Unit
Amplifier Type	General Purpose	—
Number of Circuits	2	Channels
Output Type	Rail-to-Rail	—
Slew Rate	0.6	V/µs
Gain Bandwidth Product	1.8	MHz
Current - Input Bias	70	nA
Voltage - Input Offset	1	mV
Current - Supply (x2 Channels)	500	µA
Current - Output / Channel	80	mA
Voltage - Supply Span (Min)	1.8	V
Voltage - Supply Span (Max)	6	V
Operating Temperature	-40 to 125	°C
Mounting Type	Surface Mount	—
Package / Case	8-TSSOP, 8-MSOP (0.118", 3.00mm Width)	—
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level (MSL)	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitute parts for the TS1872AIST are identified based on the following critical parameters that determine functional equivalence:

Primary Substitution Criteria:

Dual-channel configuration (2 circuits)
Rail-to-rail output capability
Surface mount package compatibility (8-MSOP, 8-TSSOP, or equivalent 8-pin footprints)
Operating temperature range encompassing or matching -40°C to 125°C
Supply voltage span compatibility within 1.8V to 6V range
Active product status and ROHS3 compliance

Secondary Performance Considerations:

Slew rate (0.6 V/µs baseline)
Gain bandwidth product (1.8 MHz baseline)
Input bias current (70 nA baseline)
Input offset voltage (1 mV baseline)
Output current capability (80 mA per channel baseline)
Supply current consumption (500 µA for dual channels baseline)

Substitute parts are grouped into two categories: direct functional equivalents with comparable performance metrics, and performance-enhanced alternatives offering superior specifications while maintaining package and supply voltage compatibility.

Parameter Comparison

Part Number	Manufacturer	Amplifier Type	Circuits	Output Type	Slew Rate (V/µs)	GBW (MHz)	Input Bias (pA/nA)	Input Offset (µV/mV)	Supply Current (µA)	Output Current (mA)	Supply Min (V)	Supply Max (V)	Temp Range (°C)	Package	RoHS
TS1872AIST	STMicroelectronics	General Purpose	2	Rail-to-Rail	0.6	1.8	70 nA	1 mV	500	80	1.8	6	-40 to 125	8-MiniSO	ROHS3
AD8532ARMZ-REEL	Analog Devices Inc.	General Purpose	2	Rail-to-Rail	5	3	5 pA	25 mV	750	250	2.7	6	-40 to 85	8-MSOP	ROHS3
AD8602ARMZ	Analog Devices Inc.	CMOS	2	Rail-to-Rail	6	8.4	0.2 pA	80 µV	750	50	2.7	5.5	-40 to 125	8-MSOP	ROHS3
AD8602DRMZ-REEL	Analog Devices Inc.	CMOS	2	Rail-to-Rail	6	8.4	0.2 pA	1.3 mV	750	50	2.7	5.5	-40 to 125	8-MSOP	ROHS3
AZV832MMTR-G1	Diodes Incorporated	CMOS	2	Rail-to-Rail	0.45	1	1 pA	500 µV	70	185	1.6	5.5	-40 to 85	8-MSOP	ROHS3
LMV772MM/NOPB	Texas Instruments	General Purpose	2	Differential, Rail-to-Rail	1.4	3.5	0.23 pA	250 µV	600	75	2.7	5.5	-40 to 125	8-VSSOP	ROHS3
LMV772MMX/NOPB	Texas Instruments	General Purpose	2	Differential, Rail-to-Rail	1.4	3.5	0.23 pA	250 µV	600	75	2.7	5.5	-40 to 125	8-VSSOP	ROHS3
LTC6084CMS8#PBF	Analog Devices Inc.	CMOS	2	Rail-to-Rail	0.5	1.5	1 pA	300 µV	110	12.5	2.5	5.5	0 to 70	8-MSOP	ROHS3
MAX4246AUA+	Analog Devices Inc./Maxim Integrated	General Purpose	2	Rail-to-Rail	0.4	1	10 nA	400 µV	375	30	2.5	5.5	-40 to 125	8-uMAX/uSOP	ROHS3
MAX4246AUA+T	Analog Devices Inc./Maxim Integrated	General Purpose	2	Rail-to-Rail	0.4	1	10 nA	400 µV	375	30	2.5	5.5	-40 to 125	8-uMAX/uSOP	ROHS3
MAX4252EUA+	Analog Devices Inc./Maxim Integrated	General Purpose	2	Push-Pull, Rail-to-Rail	0.3	3	0.1 pA	70 µV	420	68	2.4	5.5	-40 to 85	8-uMAX/uSOP	ROHS3

Engineering Selection Recommendations

Direct Functional Equivalents:

The AD8532ARMZ-REEL and LMV772MM/NOPB series represent the closest functional equivalents to the TS1872AIST. Both devices maintain dual-channel configuration, rail-to-rail output capability, and extended temperature operation to 125°C. The AD8532ARMZ-REEL offers enhanced slew rate (5 V/µs) and gain bandwidth product (3 MHz) with higher output current capability (250 mA per channel), suitable for applications requiring improved dynamic performance. The LMV772MM/NOPB and LMV772MMX/NOPB variants provide differential output capability with comparable slew rate (1.4 V/µs) and superior gain bandwidth product (3.5 MHz), maintaining the full -40°C to 125°C temperature range.

Performance-Enhanced Alternatives:

The AD8602ARMZ and AD8602DRMZ-REEL devices offer superior performance metrics including higher slew rate (6 V/µs), significantly higher gain bandwidth product (8.4 MHz), and extremely low input bias current (0.2 pA). These CMOS amplifiers maintain the -40°C to 125°C operating temperature range and are suitable for precision signal conditioning applications. However, the maximum supply voltage is limited to 5.5V compared to the TS1872AIST's 6V capability.

Low-Power Alternatives:

The AZV832MMTR-G1 from Diodes Incorporated provides ultra-low supply current consumption (70 µA total), making it suitable for battery-powered applications. This device operates across an extended supply voltage range (1.6V to 5.5V) and maintains the -40°C to 85°C temperature range. The LTC6084CMS8#PBF offers similarly low supply current (110 µA) but operates only to 70°C maximum, limiting its use in extended temperature applications.

Compact Package Alternatives:

The MAX4246AUA+, MAX4246AUA+T, and MAX4252EUA+ devices from Maxim Integrated provide general-purpose amplification in 8-uMAX/uSOP packages with full -40°C to 125°C temperature operation (MAX4246 variants) or -40°C to 85°C (MAX4252). These devices feature low input bias current (10 nA for MAX4246, 0.1 pA for MAX4252) and are suitable for applications where package footprint optimization is secondary to performance requirements.

Compliance and Availability:

All substitute parts listed maintain ROHS3 compliance and REACH unaffected status, matching the TS1872AIST regulatory requirements. All devices are classified as Active product status. Selection should be based on specific application requirements for slew rate, gain bandwidth product, supply current, output current capability, and operating temperature range.

Frequently Asked Questions (FAQ)

Q: Can the AD8602ARMZ directly replace the TS1872AIST in all applications?

A: The AD8602ARMZ is functionally compatible for dual-channel rail-to-rail amplification and maintains the -40°C to 125°C operating temperature range. However, the maximum supply voltage is 5.5V compared to the TS1872AIST's 6V maximum. Applications requiring operation at 6V supply voltage require verification that the AD8602ARMZ's 5.5V maximum does not violate system requirements. The AD8602ARMZ offers superior slew rate (6 V/µs vs. 0.6 V/µs) and gain bandwidth product (8.4 MHz vs. 1.8 MHz), making it suitable for higher-speed signal conditioning.

Q: What is the difference between the LMV772MM/NOPB and LMV772MMX/NOPB?

A: Both devices are functionally identical in electrical specifications and operating characteristics. The primary difference is in packaging designation and supplier device package coding. Both maintain identical performance metrics: 1.4 V/µs slew rate, 3.5 MHz gain bandwidth product, and -40°C to 125°C operating temperature. Selection between these variants should be based on packaging availability and supply chain requirements.

Q: Is the AZV832MMTR-G1 suitable for extended temperature applications?

A: The AZV832MMTR-G1 operates from -40°C to 85°C maximum, which is more limited than the TS1872AIST's -40°C to 125°C range. This device is not suitable for applications requiring operation above 85°C. However, its ultra-low supply current consumption (70 µA) makes it ideal for battery-powered or energy-constrained systems operating within the -40°C to 85°C temperature window.

Q: What are the package compatibility considerations when substituting the TS1872AIST?

A: The TS1872AIST uses an 8-MiniSO package. Substitute parts employ 8-MSOP, 8-TSSOP, 8-VSSOP, or 8-uMAX/uSOP packages. While these packages share similar 0.118" (3.00mm) width specifications and 8-pin configurations, PCB layout and footprint designs may require modification. The pin assignments and functional pinout must be verified against the specific substitute part datasheet before PCB redesign or component substitution.

Q: Can the MAX4252EUA+ replace the TS1872AIST in low-frequency applications?

A: The MAX4252EUA+ is functionally compatible for dual-channel rail-to-rail amplification in low-frequency applications. However, it operates only to 85°C maximum temperature, limiting its use in extended temperature applications. The MAX4252EUA+ features push-pull output configuration and superior gain bandwidth product (3 MHz), making it suitable for applications not requiring operation above 85°C.

Q: What supply voltage range considerations apply when selecting substitutes?

A: The TS1872AIST operates from 1.8V to 6V supply span. Most substitute parts operate from 2.5V to 5.5V or 2.7V to 5.5V, which is narrower than the original device. Applications requiring operation at 1.8V supply voltage or 6V maximum supply voltage must verify that the selected substitute part's supply voltage range encompasses the system requirements. The AZV832MMTR-G1 offers the widest alternative range (1.6V to 5.5V) among CMOS alternatives.

Q: How do input bias current specifications affect substitute part selection?

A: The TS1872AIST specifies 70 nA input bias current. Substitute parts range from 0.1 pA (MAX4252EUA+) to 70 nA (TS1872AIST baseline). Lower input bias current reduces input offset current errors and is beneficial for high-impedance signal sources. Applications with high-impedance inputs benefit from substitutes offering lower input bias current (AD8602 series at 0.2 pA, MAX4252 at 0.1 pA). Standard impedance applications are compatible with all listed substitutes.

Q: What output current capability differences exist among substitute parts?

A: The TS1872AIST provides 80 mA per channel output current. Substitute parts range from 12.5 mA (LTC6084CMS8#PBF) to 250 mA (AD8532ARMZ-REEL). Applications requiring high output current (driving low-impedance loads or capacitive loads) benefit from the AD8532ARMZ-REEL (250 mA) or AZV832MMTR-G1 (185 mA). Low-power applications with minimal output current requirements can utilize the LTC6084CMS8#PBF or MAX4246 variants.

Q: Are all substitute parts ROHS3 compliant?

A: Yes, all substitute parts listed in this reference maintain ROHS3 compliance and REACH unaffected status, matching the TS1872AIST regulatory requirements. All devices are classified as Active product status, ensuring continued availability and manufacturer support.

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