THAT120

Features:

 Four Matched PNP Transistors
Low noise - 0.75 nV/Hz
High Speed - 325 MHz f_t
Excellent Matching - 500 V (typ)
Dielectrically Isolated
-25 V V_CEO

Application

 Microphone Preamplifiers
 Tape Head Preamplifiers
Current Sources
Current Mirrors
Log/Antilog Amplifiers
Multipliers

Pinout




Specifications

Maximum Ratings (TA = 25)
Parameter	Symbol	Conditions	Min	Typ	Max	Units
Collector-Emitter Voltage	BVCEO	IC = 1 mAdc, IB = 0	-25	-40	-	V
Collector-Base Voltage	BVCBO	IC = 10 Adc, IE = 0	-25	40	-	V
Emitter-Base Voltage	BVEBO	IE = 10 Adc, IC = 0	-5	-	-	V
Collector-Collector Voltage	BVCC		±100	±200	-	V
Emitter-Emitter Voltage	BVEE		±100	±200	-	V
Collector Current	IC		-10	-20		mA
Emitter Current	IE		-10	-20		mA
Operating Temperature Range	TA		0		70
Maximum Junction Temperature	TJMAX				150
Storage Temperature	TSTORE		-45		125

Description

THAT120 is a quad, large-geometry monolithic PNP transistor array which combines low noise, high speed and excellent parametric matching. The large geometry typically results in 25 base spreading resistance, producing 0.75 nV /Hz voltage noise. This THAT120 makes these parts an excellent choice for low-noise amplifier input stages.

THAT120 is Fabricated on a Complementary Bipolar Dielectrically Isolated process, all four transistors are electrically isolated from each other by a layer of oxide. The resulting low collector-to-substrate capacitance produces a typical ft of 325 MHz, for AC performance similar to 2N3906-class devices. The dielectric isolation also minimizes crosstalk and provides complete DC isolation.

Substrate biasing is not required for normal operation, though the substrate should be grounded to optimize speed. The one-chip construction assures excellent parameter matching and tracking over temperature.