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Product Detailed Parameters
- Description：IC DGTL POT 15KOHM 4TAP 10UMAX
- Series：-
- Mfr：Analog Devices Inc./Maxim Integrated
- Package：Tube
- Taper：Linear
- Configuration：Potentiometer
- Number of Circuits：1
- Number of Taps：4
- Resistance (Ohms)：15k
- Interface：Parallel
- Memory Type：Volatile
- Voltage - Supply：5V, ±5V
- Features：-
- Tolerance：-
- Temperature Coefficient (Typ)：-
- Mounting Type：Surface Mount
- Supplier Device Package：10-uMAX/uSOP
- Package / Case：10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- Operating Temperature：-40°C ~ 85°C
- Resistance - Wiper (Ohms) (Typ)：500
- Grade：-
- Qualification：-
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Overview
The MAX5421BEUB+ is a digitally programmable precision voltage divider optimized for programmable gain amplifier (PGA) configurations. It operates from a single +5V or dual ±5V supply with a typical supply current of 3µA. The device provides four noninverting gain ratios: 1, 2, 4, and 8. It features a 0.09% resistor ratio accuracy over the -40°C to +85°C temperature range. The MAX5421 includes an on-chip matching resistor for op amp bias-current compensation. It utilizes a CMOS/TTL logic compatible 2-wire parallel interface and is housed in a 10-pin µMAX package.
Feature Summary
- Four precision noninverting gain ratios (1, 2, 4, and 8) via digital control
- 0.09% divider ratio accuracy guaranteed over -40°C to +85°C
- On-chip matching resistor for op amp bias-current compensation
- Low power consumption with 3µA supply current
Applications
- General-purpose programmable noninverting amplifiers
- Programmable instrumentation amplifiers
Procurement Notes
Verify that the component matches the specific BEUB suffix requirements for 0.09% accuracy and 10-pin µMAX packaging. Confirm the presence of the matching resistor feature inherent to the MAX5421 variant. Ensure compatibility with the specified single or dual supply voltage ranges during integration.
Selection Notes
Select the MAX5421BEUB+ when a 0.09% ratio accuracy is required for PGA applications. Choose this part over the MAX5420 if op amp bias-current compensation via the internal matching resistor is necessary. Ensure the design accommodates the 10-pin µMAX footprint and the 2-wire parallel digital interface constraints.
Part Context
The MAX5421BEUB+ belongs to the MAX5420/MAX5421 family of digitally programmable precision voltage dividers. It is functionally similar to the MAX5420 but includes an additional matching resistor terminal pair for bias current compensation. The 'B' designation indicates the 0.09% accuracy grade, while 'EUB' specifies the 10-pin µMAX package.
Replacement Considerations
The MAX5421AEUB+ offers higher 0.025% accuracy, while the MAX5421CEUB+ provides lower 0.5% accuracy. For designs not requiring the matching resistor, the MAX5420BEUA is an alternative in an 8-pin package.
