NJM2171AR-TE1

Overview

The NJM2171AR-TE1 is a low voltage stereo headphone amplifier designed for portable audio applications. It operates directly from battery supplies with V+1 ranging from 1.8V to 4.5V and V+2 from 0.9V to 4.5V. The device features a typical operating current of 450µA at V+1=2.3V and 700µA at V+2=1.2V. Output power exceeds 5mW into a 16Ω load at 10% THD. It includes mute and standby circuits, achieving supply currents as low as 10µA in power-down mode. The fixed voltage gain is typically 11.5dB.

Feature Summary

• Integrated mute and standby control functions for low current consumption and minimal turn-noise
• Dual independent power supply architecture supporting direct battery operation
• Bipolar technology implementation ensuring high performance in compact packages

Applications

• Portable Mini-Disc players
• Portable Compact-Disc players
• General headphone amplifier circuits

Procurement Notes

Verify the component status carefully as the distributor listing indicates this part is discontinued. Confirm availability through official Nisshinbo Micro Devices channels or authorized distributors before finalizing design-in decisions. Ensure the package type matches the HSOP-8 or VSP10 outline specified in the datasheet.

Selection Notes

Select this component for designs requiring low voltage operation and integrated power management controls. The dual supply configuration allows optimization of quiescent current. Consider the thermal dissipation limits when designing for maximum output power levels within the specified temperature range.

Part Context

This component belongs to the NJM2171A series of low voltage headphone amplifiers manufactured by Nisshinbo Micro Devices. It utilizes bipolar technology and is housed in a VSP10 package. The series is specifically engineered for portable audio devices where power efficiency and sound quality are critical constraints.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Designers should consult the manufacturer for end-of-life notifications or recommended alternative components within the same product family.

FAQ

How does the standby function affect power consumption?

When the STBY pin is set to High, the IC becomes non-active, reducing the supply current to approximately 10µA at V+1=2.3V.

What is the effect of the MUTE pin on signal output?

Setting the MUTE pin to High prevents the IC from outputting any signal, effectively silencing the audio output.