TT Semiconductor 1290-series Low-Cost Dual Balanced Line Receiver ICs

	TT Semiconductor 1290-series equivalent circuit

The TT Semiconductor 1290 series of low-cost 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 include on-board precision thin-film resistors which offer good matching and excellent tracking due to their monolithic construction. Manufactured in a proprietary complementary dielectric isolation (DI) process, the 1290 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 50dB of common-mode rejection. With 14V/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 1290 series is available in a 16 pin Ceramic DIP, Flatpack,  or LCC and 16 Pin Extended Temperature Plastic DIP or QSOP package which features a very small footprint.

TT Semiconductor Corporation offers a whole range of Balanced Line Receiver ICs tailored for different applications. For a side by side comparison of all our input stage ICs, see our Line Receiver Selection Guide.

Features High CMRR: typ. 50 dB at 60 Hz Excellent audio performance    Wide bandwidth: > 7.6 MHz    High slew rate: 14 V/µs    Low distortion: 0.0006 % THD    Low noise:  -104 dBu Low Current: 3 mA (per amplifier) Several gains: 0 dB, ± 3 dB, & ± 6 dB

Applications Balanced Audio Line Receivers Instrumentation Amplifiers Differential Amplifiers Precision Summers Current Shunt Monitors

For complete specifications, download a copy of the 1290-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
	1290	0 dB	16 Pin Ceramic DIP	TT1290D	Call	25	Datasheet
			16 Pin Ceramic Flatpack	TT1290F	Call	98
			16 Pin Ceramic LCC	TT1290L	Call	98
			16 Pin Extended Temp. Plastic DIP	TT1290P	Call	25
			16 Pin  Extended Temp. Plastic SOIC	TT1290S	Call	98
	1293	-3 dB	16 Pin Ceramic DIP	TT1293D	Call	25
			16 Pin Ceramic Flatpack	TT1293F	Call	98
			16 Pin Ceramic LCC	TT1293L	Call	98
			16 Pin Extended Temp. Plastic DIP	TT1293P	Call	25
			16 Pin  Extended Temp. Plastic SOIC	TT1293S	Call	98
	1296	-6 dB	16 Pin Ceramic DIP	TT1296D	Call	25
			16 Pin Ceramic Flatpack	TT1296F	Call	98
			16 Pin Ceramic LCC	TT1296L	Call	98
			16 Pin Extended Temp. Plastic DIP	TT1296P	Call	25
			16 Pin  Extended Temp. Plastic SOIC	TT1296S	Call	98

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.