SSM2019BRW

Overview

The SSM2019 is a monolithic audio preamplifier featuring ultra-low noise (1.5 dB noise figure) and total harmonic distortion below 0.01% at G=100. It offers wide bandwidth (1 MHz at G=100) and high slew rate (16 V/µs at G=10). The device operates on ±5V to ±18V supplies, draws approximately 7.5 mA, and supports gains from 1 to 3500 via a single external resistor. It provides true differential inputs, unity gain stability, and an operating temperature range of –40°C to +85°C.

Feature Summary

• Ultra-low noise performance with 1.0 nV/√Hz input voltage noise density
• Requires only one external resistor for gain setting across a wide range
• Unity gain stable with true differential inputs and subaudio 1/f noise corner

Applications

• Audio mix consoles
• Intercom and paging systems
• Sonar equipment
• Digital audio systems

Procurement Notes

Verify the specific package suffix (N for PDIP, RN for SOIC_N, or RW for SOIC_W) matches the required footprint. Confirm RoHS compliance status indicated by the Z suffix in ordering part numbers. Ensure supply voltage and thermal constraints align with the specified operating range.

Selection Notes

Select based on required gain accuracy and noise floor. The device allows gain adjustment from 1 to 3500 using a single resistor. Consider the 16-lead SOIC option if additional NC pins are needed for layout flexibility. Verify that the source impedance matches the low current noise characteristics for optimal signal-to-noise ratio.

Part Context

This component belongs to Analog Devices' SSM series of audio preamplifiers. It combines precision instrumentation amplifier architecture with audio-specific optimizations. The design emphasizes minimal external component count while maintaining high linearity and low distortion suitable for professional audio and measurement applications.

Replacement Considerations

SSM2019BNZ

FAQ

How is the voltage gain determined?

The voltage gain is set by a single external resistor connected between RG1 and RG2 pins, calculated as G = (10kΩ / RG) + 1.

Is the SSM2019 stable at unity gain?

Yes, the SSM2019 is unity gain stable and does not require minimum gain loading for stability.