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LT6658AHMSE-1.8 is a high-precision, dual-output, low-noise voltage reference chip belonging to the LT6658 series. This device combines the functions of a reference voltage source and a linear regulator, making it suitable for applications such as high-precision ADC/DAC driving, industrial control, and automotive electronics.

LT6658AHMSE-1.8 Core Features

(1) Voltage Reference Performance

Output Voltage: Fixed 1.8V (adjustable up to 6V via an external resistor).

Accuracy: ±0.05% (Grade A), ensuring high stability.

Temperature Coefficient: 10ppm/°C (maximum), low temperature drift characteristics.  

Low Noise:  

1μVpp (0.1Hz to 10Hz)  

2μVrms (10Hz to 10kHz)  

(2) Dual Output Architecture  

Output 1: Supports 150mA sink current / 20mA source current, suitable for driving high loads.

Output 2: Supports 50mA sink current / 20mA source current, providing flexible power management.  

Tracking function: Dual outputs remain synchronised under temperature and load changes, reducing system errors.  

(3) Power management  

Input voltage range: 4.5V to 36V (wide voltage adaptability).

Quiescent current: 3.6mA, optimised for energy efficiency.  

Load regulation: 0.1ppm/mA, ensuring output stability.  

(4) Protection features  

Thermal shutdown (TSD)  

Short-circuit protection (SCP)  

Undervoltage lockout (UVLO)

LT6658AHMSE-1.8 Specifications

Package: 16-MSOP-EP (exposed pad)  

Operating temperature: -40°C to +125°C (TJ)  

Output current: 150mA (maximum)  

PSRR: 96dB @ 10kHz  

Mounting method: Surface mount (SMD)

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