TT Semiconductor 1280-series Dual Balanced Line Receiver ICs

	TT Semiconductor 1280-series equivalent circuit

The TT Semiconductor 1280-series of dual precision differential amplifiers was designed primarily for use in balanced line receiver applications. Gains of 0 dB, ±3 dB, and ±6 dB are available to suit various application requirements.

These devices are laser-trimmed in wafer form to obtain the precision resistor matching needed for high CMR performance and precise gain. Manufactured in a proprietary complementary dielectric isolation (DI) process, the 1280 series provides the benefits of discrete designs with the simplicity, reliability, matching, and small size of a fully integrated solution.

All three versions of the part typically exhibit 90dB of common-mode rejection. With 15V/µs slew rate, 7.6MHz or higher bandwidth, and 0.0006% THD, these devices are sonically transparent. Moreover, current consumption is typically a low 6mA (3 mA per amplifier).

The 1280-series is available in 16-pin Ceramic LCC, 14 Pin Ceramic DIP or, Flatpack, and 14 pin Extended Temperature Plastic DIP or  SOIC packages. The 1280 is pin-compatible with the TI INA2134, and the 1286 is pin-compatible with the TI INA2137 and the ADI AD8273.

For a side by side comparison of our input stage ICs see our Line Receiver Selection Guide.		For a cross-reference to other manufacturers' part numbers see our IC Cross-Reference Chart
Features High CMRR: typ. 90 dB at 60 Hz Excellent audio performance    Wide bandwidth: > 7.6 MHz    High slew rate: 15 V/µs    Low distortion: 0.0006 % THD    Low noise:  -104.5 dBu Low Current: 3 mA (per amplifier) Several gains: 0 dB, ± 3 dB, & ± 6 dB Industry-standard pinout		Applications Balanced Audio Line Receivers Instrumentation Amplifiers Differential Amplifiers Precision Summers Current Shunt Monitors

For complete specifications, download a copy of the 1280-series Datasheet. Datasheets are provided in Adobe's PDF format. You need to have Adobe Acrobat Reader installed on your computer to view the file. To obtain a free copy of Acrobat Reader follow the link at right.

	Model	Gain	Package	Order Number	Pricing (1000)	Min Order Quantity	Reference
	1280	0 dB	14 Pin Ceramic DIP	TT1280D	Call	25	Datasheet
			14 Pin Ceramic Flatpack	TT1280F	Call	55
			16 Pin Ceramic LCC	TT1280L	Call	55
			14 Pin Extended Temp. Plastic DIP	TT1280P	Call	25
			14 Pin  Extended Temp. Plastic SOIC	TT1280S	Call	55
	1283	-3 dB	14 Pin Ceramic DIP	TT1283D	Call	25
			14 Pin Ceramic Flatpack	TT1283F	Call	55
			16 Pin Ceramic LCC	TT1283L	Call	55
			14 Pin Extended Temp. Plastic DIP	TT1283P	Call	25
			14 Pin  Extended Temp. Plastic SOIC	TT1283S	Call	55
	1286	-6 dB	14 Pin Ceramic DIP	TT1286D	Call	25
			14 Pin Ceramic Flatpack	TT1286F	Call	55
			16 Pin Ceramic LCC	TT1286L	Call	55
			14 Pin Extended Temp. Plastic DIP	TT1286P	Call	25
			14 Pin  Extended Temp. Plastic SOIC	TT1286S	Call	55

All models are available on tape and reel for a modest increase in price and require an extended lead time. Tape and reel parts have a 2000 piece minimum and must be ordered in multiples of 2000. Please contact our sales department for pricing and delivery.