XR2008IMP8X Equivalent & Substitute Parts

Part Overview

The XR2008IMP8X is a general purpose operational amplifier featuring dual circuits in an 8-MSOP surface mount package. Manufactured by MaxLinear, Inc., this rail-to-rail amplifier is designed for applications requiring moderate bandwidth and slew rate performance across a 2.5V to 5.5V supply range. The device operates across the industrial temperature range of -40°C to 125°C with a gain bandwidth product of 33 MHz and slew rate of 50V/µs.

The XR2008IMP8X is classified as obsolete. Identifying equivalent and substitute parts is necessary to maintain design continuity, ensure supply chain reliability, and support ongoing production requirements for applications currently utilizing this component.

Key Parameters

Parameter	Value	Unit
Amplifier Type	General Purpose	—
Number of Circuits	2	—
Output Type	Rail-to-Rail	—
Slew Rate	50	V/µs
Gain Bandwidth Product	33	MHz
-3dB Bandwidth	35	MHz
Current - Input Bias	1.2	µA
Voltage - Input Offset	5	mV
Current - Supply (per Channel)	470	µA
Current - Output / Channel	15	mA
Voltage - Supply Span (Min)	2.5	V
Voltage - Supply Span (Max)	5.5	V
Operating Temperature	-40 to 125	°C
Mounting Type	Surface Mount	—
Package / Case	8-TSSOP, 8-MSOP (0.118", 3.00mm Width)	—
Moisture Sensitivity Level (MSL)	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitution of the XR2008IMP8X is determined by the following critical parameters:

Functional Requirements:

Dual-channel (2 circuits) general purpose operational amplifier configuration
Rail-to-rail output capability
Surface mount package compatibility (8-MSOP or equivalent 8-pin MSOP-class packages)
Operating temperature range of -40°C to 125°C
Supply voltage range encompassing 2.5V to 5.5V minimum and maximum specifications

Performance Characteristics:

Gain bandwidth product in the range of 14 MHz to 50 MHz
Slew rate from 2.4V/µs to 45V/µs
Input bias current from 0.1 pA to 500 nA
Input offset voltage from 6 µV to 100 µV
Output current per channel from 35 mA to 120 mA

Compliance & Packaging:

RoHS3 compliance status
Moisture sensitivity level MSL 1 or MSL 2
8-MSOP or 8-VSSOP package variants
ECCN EAR99 classification

Substitute parts are grouped into two categories: Active General Purpose Amplifiers (AD8646 series, LMP7716MM/NOPB, LMP7732MM/NOPB, MAX4489AUA+T, MP5221DK-LF-Z) and Active CMOS Amplifiers (AD8652ARMZ-REEL, LTC6244 series, OPA2320AIDGKR). Selection depends on whether the application prioritizes lower input bias current and offset voltage (CMOS variants) or lower supply current consumption (general purpose variants).

Parameter Comparison

Part Number	Manufacturer	Amplifier Type	Slew Rate (V/µs)	GBW (MHz)	Input Bias (pA/nA/µA)	Input Offset (µV/mV)	Supply Current (mA)	Output Current (mA)	Supply Min (V)	Supply Max (V)	Temp Range (°C)	Package	Status
XR2008IMP8X	MaxLinear, Inc.	General Purpose	50	33	1.2 µA	5 mV	0.47	15	2.5	5.5	-40 to 125	8-MSOP	Obsolete
AD8646ARMZ-REEL	Analog Devices Inc.	General Purpose	11	24	0.3 pA	0.6 µV	1.5	120	2.7	5.5	-40 to 125	8-MSOP	Active
AD8646WARMZ-RL	Analog Devices Inc.	General Purpose	11	24	0.3 pA	0.6 µV	1.5	120	2.7	5.5	-40 to 125	8-MSOP	Active
AD8652ARMZ-REEL	Analog Devices Inc.	CMOS	41	50	1 pA	0.09 µV	17.5	40	2.7	5.5	-40 to 125	8-MSOP	Active
LMP7716MM/NOPB	Texas Instruments	General Purpose	11.5	17	0.1 pA	0.01 µV	1.3	66	1.8	5.5	-40 to 125	8-VSSOP	Active
LMP7732MM/NOPB	Texas Instruments	General Purpose	2.4	22	14 nA	0.006 µV	5	49	1.8	5.5	-40 to 125	8-VSSOP	Active
LTC6244CMS8#PBF	Analog Devices Inc.	CMOS	35	50	1 pA	0.1 µV	6.25	35	2.8	6	0 to 70	8-MSOP	Active
LTC6244IMS8#PBF	Analog Devices Inc.	CMOS	35	50	1 pA	0.1 µV	6.25	35	2.8	6	-40 to 85	8-MSOP	Active
MAX4489AUA+T	Analog Devices Inc./Maxim Integrated	General Purpose	10	42	1 pA	0.07 µV	2.5	48	2.7	5.5	-40 to 125	8-uMAX/uSOP	Active
MP5221DK-LF-Z	Monolithic Power Systems Inc.	General Purpose	45	14	500 nA	2 µV	1.6	70	3.2	20	-40 to 85	8-MSOP	Active
OPA2320AIDGKR	Texas Instruments	CMOS	10	20	0.2 pA	0.04 µV	1.45	65	1.8	5.5	-40 to 125	8-VSSOP	Active

Engineering Selection Recommendations

Primary Substitutes for Direct Replacement:

The AD8646ARMZ-REEL and AD8646WARMZ-RL are recommended as primary substitutes. Both are active, RoHS3-compliant general purpose dual-channel amplifiers in 8-MSOP packages with full -40°C to 125°C operating temperature coverage. These devices maintain rail-to-rail output capability and supply voltage compatibility (2.7V to 5.5V). The primary trade-off is reduced slew rate (11V/µs versus 50V/µs) and lower gain bandwidth product (24 MHz versus 33 MHz), which are acceptable for most general purpose applications not requiring high-speed transient response.

High-Performance CMOS Alternative:

The AD8652ARMZ-REEL offers superior performance characteristics with 41V/µs slew rate and 50 MHz gain bandwidth product, exceeding the original XR2008IMP8X specifications. This CMOS amplifier provides exceptional input bias current (1 pA) and input offset voltage (90 nV), making it suitable for precision applications. The trade-off is increased supply current (17.5 mA versus 0.47 mA). This device is active, RoHS3-compliant, and maintains full temperature range coverage.

Low-Power General Purpose Options:

The MAX4489AUA+T provides a balanced alternative with 42 MHz gain bandwidth product, 10V/µs slew rate, and minimal supply current (2.5 mA). This device is packaged in 8-uMAX/uSOP format and maintains full -40°C to 125°C operation with RoHS3 compliance.

Extended Supply Voltage Range:

The MP5221DK-LF-Z supports an extended supply voltage range (3.2V to 20V) and operates to -40°C to 85°C. This device is suitable for applications requiring higher supply voltages but with reduced upper temperature limit.

Low-Noise, Low-Offset Precision Options:

The LMP7716MM/NOPB and LMP7732MM/NOPB from Texas Instruments offer exceptional input offset voltage specifications (10 nV and 6 nV respectively) with full -40°C to 125°C coverage. These devices are packaged in 8-VSSOP format and are RoHS3-compliant. The LMP7732MM/NOPB features extremely low input bias current (14 nA) but reduced slew rate (2.4V/µs).

Temperature-Limited CMOS Variants:

The LTC6244CMS8#PBF and LTC6244IMS8#PBF are CMOS amplifiers with 50 MHz gain bandwidth product and 35V/µs slew rate. The LTC6244CMS8#PBF operates 0°C to 70°C, while the LTC6244IMS8#PBF extends to -40°C to 85°C. Both are RoHS3-compliant but do not cover the full -40°C to 125°C range of the original device.

Precision CMOS Low-Power Option:

The OPA2320AIDGKR is a CMOS amplifier with 20 MHz gain bandwidth product, 10V/µs slew rate, and minimal supply current (1.45 mA). This device provides full -40°C to 125°C operation and RoHS3 compliance in 8-VSSOP package format.

All recommended substitutes maintain MSL 1 or MSL 2 moisture sensitivity levels, ECCN EAR99 classification, and HTSUS 8542.33.0001 tariff code consistency with the original device.

Frequently Asked Questions (FAQ)

Q: Can the AD8646ARMZ-REEL directly replace the XR2008IMP8X without circuit modifications?

A: The AD8646ARMZ-REEL is pin-compatible and functionally equivalent as a dual-channel rail-to-rail general purpose amplifier in 8-MSOP package. However, the reduced slew rate (11V/µs versus 50V/µs) and lower gain bandwidth product (24 MHz versus 33 MHz) may affect circuit performance in applications with fast transient requirements or high-frequency signal processing. Circuit validation is necessary to confirm performance adequacy.

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

A: General purpose amplifiers (AD8646, LMP7716, LMP7732, MAX4489, MP5221) typically feature higher input bias currents (0.1 pA to 500 nA) but lower supply current consumption. CMOS amplifiers (AD8652, LTC6244, OPA2320) provide extremely low input bias currents (0.2 pA to 1 pA) and exceptional input offset voltage specifications, making them suitable for precision instrumentation and high-impedance signal conditioning. CMOS variants generally consume more supply current.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All substitute parts listed are RoHS3 compliant and REACH unaffected, maintaining regulatory compliance equivalent to the original XR2008IMP8X.

Q: Which substitute offers the closest performance match to the XR2008IMP8X?

A: The AD8652ARMZ-REEL provides the closest performance match with 41V/µs slew rate and 50 MHz gain bandwidth product, both exceeding the original 50V/µs slew rate and 33 MHz gain bandwidth product specifications. This CMOS device maintains full -40°C to 125°C operation and 8-MSOP package compatibility.

Q: Can I use the LTC6244 series if my application operates only at 0°C to 70°C?

A: Yes. The LTC6244CMS8#PBF is suitable for applications with 0°C to 70°C operating requirements. However, if your application requires -40°C to 125°C coverage, the LTC6244IMS8#PBF extends operation to -40°C to 85°C but does not cover the full 125°C upper limit. For complete temperature range coverage, select AD8646, AD8652, MAX4489, LMP7716, LMP7732, or OPA2320 variants.

Q: What is the significance of the 8-VSSOP package variant used by some substitutes?

A: The 8-VSSOP package is a very small shrink small outline package with identical pin count and functionality to 8-MSOP but with reduced footprint dimensions. Devices in 8-VSSOP format (LMP7716, LMP7732, OPA2320) are functionally compatible but require PCB layout modifications to accommodate the different package outline. Verify PCB footprint compatibility before selection.

Q: Which substitute provides the lowest supply current consumption?

A: The LMP7716MM/NOPB offers the lowest supply current at 1.3 mA (per dual channels), followed by OPA2320AIDGKR at 1.45 mA and MAX4489AUA+T at 2.5 mA. These options are suitable for battery-powered or power-constrained applications.

Q: Does the MP5221DK-LF-Z support the full -40°C to 125°C temperature range?

A: No. The MP5221DK-LF-Z operates from -40°C to 85°C, providing 40°C less upper temperature coverage than the original XR2008IMP8X. This device is suitable only for applications with maximum operating temperature of 85°C or lower.

Q: Are there any moisture sensitivity concerns with these substitutes?

A: All substitute parts maintain MSL 1 (unlimited shelf life) or MSL 2 (1-year shelf life) ratings, consistent with the original XR2008IMP8X MSL 1 classification. Standard moisture control procedures during storage and handling are recommended for MSL 2 devices.

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