DS1845B-010 Equivalent & Substitute Parts

Part Overview

The DS1845B-010 is a digital potentiometer manufactured by Analog Devices Inc./Maxim Integrated, classified as a Data Acquisition component. This device features a 10kΩ resistance with dual-circuit configuration, 100/256 taps, and I2C interface control. The part is currently listed as obsolete, which necessitates identification of functionally equivalent alternatives for ongoing system support and new designs requiring this specification class.

Key Parameters

Parameter	Value
Resistance (Ohms)	10k
Number of Circuits	2
Number of Taps	100, 256
Interface	I2C
Memory Type	Non-Volatile
Voltage Supply Range	2.7V ~ 5.5V
Operating Temperature	-40°C ~ 85°C
Mounting Type	Surface Mount
Package	16-CSBGA (4x4)
Tolerance	±20%
Temperature Coefficient (Typ)	750ppm/°C
Resistance - Wiper (Ohms) (Typ)	500

Substitute Part Grouping Explanation

Substitution eligibility for the DS1845B-010 is determined by strict equivalence across the following critical parameters:

Resistance value: 10kΩ (exact match required)
Circuit configuration: Dual-circuit (2 circuits)
Tap count: 100/256 taps
Interface protocol: I2C
Memory architecture: Non-Volatile
Supply voltage range: 2.7V ~ 5.5V (minimum requirement)
Operating temperature range: -40°C ~ 85°C (minimum requirement)
Package type: 16-CSBGA (4x4)
Wiper resistance: 500Ω typical
Tolerance: ±20%
Temperature coefficient: 750ppm/°C typical

The DS1845B-010+ meets all specified parameters and qualifies as a parametric equivalent. The primary distinction is product status and compliance certification.

Parameter Comparison

Parameter	DS1845B-010	DS1845B-010+
Resistance (Ohms)	10k	10k
Number of Circuits	2	2
Number of Taps	100, 256	100, 256
Interface	I2C	I2C
Memory Type	Non-Volatile	Non-Volatile
Voltage - Supply	2.7V ~ 5.5V	2.7V ~ 5.5V
Operating Temperature	-40°C ~ 85°C	-40°C ~ 85°C
Mounting Type	Surface Mount	Surface Mount
Supplier Device Package	16-CSBGA (4x4)	16-CSBGA (4x4)
Tolerance	±20%	±20%
Temperature Coefficient (Typ)	750ppm/°C	750ppm/°C
Resistance - Wiper (Ohms) (Typ)	500	500
Product Status	Obsolete	Active
RoHS Status	RoHS non-compliant	ROHS3 Compliant

Engineering Selection Recommendations

The DS1845B-010+ is the direct parametric equivalent for the obsolete DS1845B-010. All electrical and mechanical specifications are identical. The DS1845B-010+ carries active product status with ROHS3 compliance certification, whereas the original part is obsolete and RoHS non-compliant. For new designs and ongoing production requiring this digital potentiometer specification, the DS1845B-010+ is the appropriate selection. Both parts share identical packaging (16-CSBGA 4x4), supply voltage range (2.7V ~ 5.5V), and I2C interface protocol, ensuring direct functional compatibility in existing circuit implementations.

Frequently Asked Questions (FAQ)

Q: Can DS1845B-010+ directly replace DS1845B-010 in existing designs?

A: Yes. The DS1845B-010+ is a parametric equivalent with identical electrical specifications, package type, and interface protocol. No circuit modifications are required.

Q: What is the primary difference between these parts?

A: The DS1845B-010+ is an active product with ROHS3 compliance, while the DS1845B-010 is obsolete and RoHS non-compliant. Functional performance is equivalent.

Q: Are the packaging specifications identical?

A: Yes. Both parts use 16-CSBGA (4x4) surface mount packaging with identical pin configurations and mechanical dimensions.

Q: What supply voltage range do these parts support?

A: Both parts operate across 2.7V to 5.5V supply voltage range, supporting 3.3V and 5V logic systems.

Q: Is the I2C interface protocol identical between these parts?

A: Yes. Both parts implement I2C interface with selectable address configuration and non-volatile memory storage.

Q: What is the operating temperature range?

A: Both parts operate from -40°C to 85°C, suitable for industrial and commercial temperature environments.

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