THAT Corporation 300 Series Low-Noise Matched Transistor Array ICs
THAT Corporation 300 Series Low-Noise Matched Transistor Array ICs are large geometry, 4-transistor, monolithic NPN, and PNP arrays, with parts ranging from 300, 320, and 340. The devices provide high speed and low noise, with excellent parameter matching between transistors of the same gender.
The 300 Series Array ICs specify a typical base-spreading resistance of 25Ω for the PNP devices (30Ω for the low-gain NPNs), resulting in voltage noise under 1nV/√Hz. The four-NPN transistor arrays are available in versions selected for hfe with minimums of 150 (300A) or 300 (300B).
The Array ICs are fabricated in a dielectrically isolated, complementary bipolar process. Each transistor is electrically insulated from the others by a layer of insulating oxide (not the reverse-biased PN junctions used in conventional arrays). This process allows inter-device crosstalk and DC isolation similar to that of discrete transistors.
The THAT Corporation 300 Series Low-Noise Matched Transistor Array ICs are ideal for low-noise amplifier input stages, log amplifiers, and many other applications.
Features
- 4 Matched NPN transistors
- 300 typical hfe of 100
- 300A minimum hfe of 150
- 300B minimum hfe of 300
- 4 Matched PNP transistors
- 320 typical hfe of 75
- 2 Matched PNP and 2 matched NPN transistors
- 340 PNP typical hfe of 75
- 340 NPN typical hfe of 100
- Low voltage noise
- 0.75nV/ √Hz (PNP)
- 0.8nV/ √Hz (NPN)
- High speed
- fT = 350MHz (NPN)
- fT = 325MHz (PNP)
- 500μV matching between devices
- Dielectrically isolated for low crosstalk and high DC isolation
- 36V VCEO
Applications
- Low noise front ends
- Microphone preamplifiers
- Log/antilog amplifiers
- Current sources
- Current mirrors
- Multipliers
Block Diagram
Package & Configuration
