DS1822+ Temperature Sensor - Equivalent & Substitute Parts

Part Overview

The DS1822+ is a digital temperature sensor manufactured by Analog Devices Inc./Maxim Integrated, designed for local temperature measurement applications. This component operates across a -55°C to 125°C range with 11-bit resolution and communicates via 1-Wire® protocol. The part is currently in active production status with 2072 units available in stock. Alternative components may be required due to application-specific requirements such as operating temperature range, output type, supply voltage specifications, or packaging availability.

Substiute Parts

DS1822+

Analog Devices Inc./Maxim IntegratedIn Stock: 2151DS1822+ Datasheet

Current PartRFQ

DS1822+

Analog Devices Inc./Maxim IntegratedIn Stock: 2151DS1822+ Datasheet

DirectRFQ

TMP04FT9

Analog Devices Inc.In Stock: 2434TMP04FT9 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the DS1822+ is determined by the following critical parameters: sensor type classification (digital, local), package form factor (TO-92-3), mounting method (through hole), and communication protocol compatibility. The DS1822+ operates with 1-Wire® protocol output, which establishes a primary constraint for direct substitution. Secondary parameters including operating temperature range, supply voltage window, resolution capability, and accuracy specifications define the scope of functional equivalence. Parts meeting these criteria may serve as substitutes when application requirements permit tolerance of parameter variations within specified limits.

Parameter Comparison

Engineering Selection Recommendations

Both DS1822+ and TMP04FT9 maintain active product status and ROHS3 compliance, establishing baseline suitability for new designs. The DS1822+ provides 1-Wire® protocol communication with a sensing range of -55°C to 125°C and supply voltage tolerance of 3V to 5.5V. The TMP04FT9 operates via PWM output with a narrower sensing range of -40°C to 100°C and requires 4.5V to 7V supply voltage. Selection between these components depends on protocol compatibility with the host system, operating temperature requirements, and supply voltage availability. The DS1822+ is suitable for applications requiring extended low-temperature operation below -40°C or supply voltages below 4.5V. The TMP04FT9 accommodates applications with higher supply voltage requirements and extended high-temperature operation to 150°C.

Frequently Asked Questions (FAQ)

Q: Can TMP04FT9 directly replace DS1822+ in existing designs?

A: Direct replacement is not possible without circuit modification. The DS1822+ uses 1-Wire® protocol while TMP04FT9 uses PWM output. Host interface circuitry must be redesigned to accommodate the different communication protocol.

Q: What are the temperature range limitations for substitution?

A: The DS1822+ operates from -55°C to 125°C. The TMP04FT9 operates from -40°C to 100°C. Applications requiring temperatures below -40°C or above 100°C cannot use TMP04FT9 as a substitute.

Q: Are supply voltage requirements compatible?

A: No. The DS1822+ requires 3V to 5.5V supply, while TMP04FT9 requires 4.5V to 7V. Applications with supply voltages between 3V and 4.5V cannot use TMP04FT9.

Q: Do both parts use the same package?

A: Yes. Both DS1822+ and TMP04FT9 use TO-92-3 (TO-226AA) through-hole packaging, allowing physical interchangeability on PCBs designed for this form factor.

Q: How do accuracy specifications compare?

A: The DS1822+ provides ±2°C accuracy across -10°C to 85°C and ±3°C across -55°C to 125°C. The TMP04FT9 provides ±3°C at 25°C and ±5°C across -40°C to -25°C. Applications requiring ±2°C accuracy should use DS1822+.