SSM2212
FEATURES
Very low voltage noise: 1 n V/√Hz maximum at 100 Hz Excellent current gain match: 0.5% Low offset voltage (VOS): 200 μV maximum (SOIC) Outstanding offset voltage drift: 0.03 μV/°C High gain bandwidth product: 200 MHz
Audio, Dual-Matched NPN Transistor SSM2212
PIN CONNECTIONS
C1 1 B1 2 E1 3 NIC 4
8 C2 7 B2 6 E2 5 NIC
NOTES 1. NIC = NO INTERNAL CONNECTION.
Figure 1. 8-Lead SOIC_N
16 NIC 15 B1 14 NIC 13 C1
09043-001
GENERAL DESCRIPTION
The SSM2212 is a dual, NPN-matched transistor pair that is specifically designed to meet the requirements of ultralow noise audio systems.
With its extremely low input base spreading resistance (rbb' is typically 28 Ω) and high current gain (h FE typically exceeds 600 at IC = 1 m A), the SSM2212 can achieve outstanding signal-to-noise ratios. The high current gain results in superior performance pared to systems incorporating mercially available monolithic amplifiers.
Excellent matching of the current gain (Δh FE) to approximately 0.5%...
