TS27M2ACN CMOS Amplifier Equivalent & Substitute Parts

Part Overview

The TS27M2ACN is a CMOS amplifier integrated circuit manufactured by STMicroelectronics, configured as a dual-circuit operational amplifier in an 8-Mini DIP package. This device is classified as obsolete, indicating discontinuation from active production. The TS27M2ACN operates across a supply voltage range of 3V to 16V with a gain bandwidth product of 1 MHz and exhibits extremely low input bias current of 1 pA, characteristic of CMOS amplifier technology.

Due to its obsolete status, equivalent and substitute parts are necessary for ongoing design support, maintenance applications, and new production requirements. Substitute parts must maintain functional compatibility through matching package type, circuit count, amplifier technology, and critical electrical parameters within acceptable operational ranges.

Key Parameters

Parameter	TS27M2ACN Value	Unit
Amplifier Type	CMOS	—
Number of Circuits	2	—
Package / Case	8-DIP (0.300", 7.62mm)	—
Mounting Type	Through Hole	—
Slew Rate	0.6	V/µs
Gain Bandwidth Product	1	MHz
Current - Input Bias	1	pA
Voltage - Input Offset	900	µV
Current - Supply	150 (x2 Channels)	µA
Current - Output / Channel	45	mA
Voltage - Supply Span (Min)	3	V
Voltage - Supply Span (Max)	16	V
Operating Temperature	0 to 70	°C
RoHS Status	ROHS3 Compliant	—
Product Status	Obsolete	—

Substitute Part Grouping Explanation

Substitution of the TS27M2ACN is determined by strict adherence to the following critical parameters:

Primary Compatibility Criteria:

Amplifier Type: CMOS technology required to maintain input bias current characteristics below 1 nA
Number of Circuits: Dual-circuit (2) configuration mandatory
Package / Case: 8-DIP (0.300", 7.62mm) through-hole mounting required for direct PCB compatibility
Supply Voltage Range: Minimum 3V and maximum 16V overlap required
Operating Temperature: 0°C to 70°C minimum coverage required

Secondary Electrical Parameters:

Gain Bandwidth Product: 1 MHz nominal; substitutes within 0.7 MHz to 2.2 MHz acceptable
Slew Rate: 0.6 V/µs nominal; substitutes from 0.032 V/µs to 2.9 V/µs acceptable
Input Bias Current: 1 pA nominal; substitutes from 0.04 pA to 1 pA acceptable
Input Offset Voltage: 900 µV nominal; substitutes from 180 µV to 5 mV acceptable
Supply Current: 150 µA per channel nominal; substitutes from 29 µA to 1 mA per channel acceptable
Output Current: 45 mA per channel nominal; substitutes from 30 mA to 40 mA per channel acceptable

Substitute parts meeting these criteria maintain functional equivalence for applications requiring CMOS amplifier characteristics with dual-circuit configuration in standard 8-DIP packaging.

Parameter Comparison

Parameter	TS27M2ACN	ICL7621BCPA+	LM2904N/NOPB	LM2904P	LMC6032IN/NOPB	TLC1078CP	TLC1078IP	TLC252BCP	TLC25L2BCP	TLC25L2CP	TLC25M2ACP
Amplifier Type	CMOS	CMOS	General Purpose	General Purpose	CMOS	CMOS	CMOS	CMOS	CMOS	CMOS	CMOS
Number of Circuits	2	2	2	2	2	2	2	2	2	2	2
Package / Case	8-DIP (0.300", 7.62mm)	8-DIP (0.300", 7.62mm)	8-DIP (0.300", 7.62mm)	8-DIP (0.300", 7.62mm)	8-DIP (0.300", 7.62mm)	8-DIP (0.300", 7.62mm)	8-DIP (0.300", 7.62mm)	8-DIP (0.300", 7.62mm)	8-DIP (0.300", 7.62mm)	8-DIP (0.300", 7.62mm)	8-DIP (0.300", 7.62mm)
Mounting Type	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole
Slew Rate (V/µs)	0.6	1.6	—	0.3	1.1	0.032	0.032	2.9	2.9	2.9	2.9
Gain Bandwidth Product (MHz)	1	1.4	1	0.7	1.4	0.11	0.11	2.2	0.11	0.11	1.7
Current - Input Bias (pA)	1	1	45	20	0.04	1	1	0.6	0.7	0.7	0.7
Voltage - Input Offset (mV)	0.9	5	2	3	1	0.18	0.18	0.29	0.235	1.1	0.9
Current - Supply per Channel (µA)	150	500	1000	500	750	29	29	1900	29	29	285
Current - Output / Channel (mA)	45	—	40	40	40	30	30	30	30	30	30
Voltage - Supply Span Min (V)	3	2	3	3	4.75	1.4	3	1.4	1.4	1.4	1.4
Voltage - Supply Span Max (V)	16	16	32	26	15.5	16	16	16	16	16	16
Operating Temperature (°C)	0 to 70	0 to 70	-40 to 85	-40 to 125	-40 to 85	0 to 70	-40 to 85	0 to 70	0 to 70	0 to 70	0 to 70
Product Status	Obsolete	Active	Active	Active	Last Time Buy	Active	Active	Last Time Buy	Last Time Buy	Last Time Buy	Last Time Buy
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

Primary Substitute Candidates (Active Product Status):

The ICL7621BCPA+ (Analog Devices Inc./Maxim Integrated) and LM2904N/NOPB (Texas Instruments) represent the most suitable substitutes for new designs and production applications. Both devices maintain CMOS or general-purpose amplifier architecture with dual-circuit configuration in 8-DIP packaging. The ICL7621BCPA+ offers rail-to-rail output capability with enhanced slew rate (1.6 V/µs) and improved gain bandwidth product (1.4 MHz), while maintaining supply voltage compatibility (2V to 16V). The LM2904N/NOPB provides extended operating temperature range (-40°C to 85°C) and higher maximum supply voltage (32V), with active product status ensuring long-term availability.

Secondary Substitute Options (Last Time Buy Status):

The TLC252BCP, TLC25L2BCP, TLC25L2CP, and TLC25M2ACP (Texas Instruments LinCMOS™ series) provide functional equivalence with varying performance characteristics. The TLC252BCP delivers the highest gain bandwidth product (2.2 MHz) and slew rate (2.9 V/µs) among CMOS substitutes. The TLC25L2BCP and TLC25L2CP offer single-ended output configuration with minimal supply current (29 µA per channel). The TLC25M2ACP provides open-drain output with 1.7 MHz gain bandwidth product. All Last Time Buy devices maintain ROHS3 compliance and 8-DIP packaging compatibility. Selection from this group requires consideration of extended lead times and inventory constraints.

Compatibility Constraints:

The LMC6032IN/NOPB exhibits restricted supply voltage minimum (4.75V), limiting compatibility with applications requiring 3V operation. The TLC1078CP and TLC1078IP feature significantly reduced gain bandwidth product (110 kHz) and slew rate (0.032 V/µs), suitable only for low-frequency applications. The LM2904P operates at reduced gain bandwidth product (700 kHz) compared to the TS27M2ACN nominal specification.

All substitute candidates maintain ROHS3 compliance, REACH unaffected status, and EAR99 ECCN classification, consistent with the original TS27M2ACN regulatory requirements.

Frequently Asked Questions (FAQ)

Q: Can the TS27M2ACN be directly replaced with any of the listed substitutes without PCB modification?

A: Yes, all listed substitutes maintain identical 8-DIP (0.300", 7.62mm) through-hole package geometry, enabling direct pin-for-pin replacement on existing PCBs. Pin configuration compatibility is maintained across all dual-circuit CMOS and general-purpose amplifier devices in this package type.

Q: What is the primary difference between CMOS and general-purpose amplifier substitutes?

A: CMOS amplifiers (TS27M2ACN, ICL7621BCPA+, LMC6032IN/NOPB, TLC series) exhibit input bias currents in the picoampere range (0.04 pA to 1 pA), while general-purpose amplifiers (LM2904 series) operate with input bias currents in the nanoampere range (20 nA to 45 nA). CMOS devices are required for applications sensitive to input bias current effects. General-purpose amplifiers provide extended operating temperature ranges and higher supply voltage maximums.

Q: Which substitute offers the best performance match to the TS27M2ACN?

A: The ICL7621BCPA+ provides the closest electrical performance match with 1.4 MHz gain bandwidth product, 1.6 V/µs slew rate, and 1 pA input bias current. This device maintains supply voltage compatibility (2V to 16V) and active product status. The TLC25M2ACP offers equivalent input offset voltage (900 µV) and 1.7 MHz gain bandwidth product with open-drain output configuration.

Q: Are there supply voltage compatibility issues with any substitutes?

A: The LMC6032IN/NOPB requires minimum supply voltage of 4.75V, incompatible with 3V minimum operation of the TS27M2ACN. The TLC1078CP and TLC1078IP require minimum 1.4V and 3V respectively, both compatible with the TS27M2ACN 3V minimum. All other substitutes maintain 3V minimum supply voltage compatibility.

Q: What is the significance of "Last Time Buy" product status for TLC series substitutes?

A: Last Time Buy status indicates these devices are in final production phases with limited availability. Inventory is available for current orders, but future procurement is not guaranteed. Applications requiring long-term supply continuity should prioritize active-status substitutes (ICL7621BCPA+, LM2904N/NOPB, LM2904P, TLC1078CP, TLC1078IP).

Q: Do all substitutes maintain the same output current capability as the TS27M2ACN?

A: The TS27M2ACN specifies 45 mA output current per channel. Most CMOS substitutes (TLC series, LMC6032IN/NOPB) provide 30 mA to 40 mA per channel. The LM2904 series provides 40 mA per channel. Applications requiring 45 mA output current should confirm substitute capability against specific load requirements.

Q: Which substitute is recommended for low-power applications?

A: The TLC1078CP and TLC1078IP offer the lowest supply current consumption at 29 µA per channel, compared to the TS27M2ACN at 150 µA per channel. The TLC25L2BCP and TLC25L2CP also provide 29 µA per channel supply current with single-ended output configuration. These devices are suitable for battery-powered and low-power instrumentation applications.

Q: Are there output type differences between substitutes that affect circuit design?

A: Yes. The TS27M2ACN, most TLC series, and LM2904 devices feature standard output stages. The ICL7621BCPA+ provides rail-to-rail output capability, allowing output swing to supply rails. The TLC25L2BCP and TLC25L2CP feature single-ended output. The TLC25M2ACP features open-drain output, requiring external pull-up resistors. Output type selection depends on specific application requirements.

Q: What compliance certifications are maintained across all substitutes?

A: All listed substitutes maintain ROHS3 compliance, REACH unaffected status, and EAR99 ECCN classification, consistent with the TS27M2ACN. Moisture sensitivity level is 1 (Unlimited) for all devices, indicating no special moisture handling requirements during storage or assembly.

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