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InGenius Balanced Line Receivers
 

 

 

 

THAT 1200 Series - InGenius® Balanced Line Receivers

 

The THAT 1200-series InGenius balanced line receivers overcome a serious limitation of

conventional balanced input stages: poor common mode rejection in real-world applications.

While conventional input stages measure well in the lab and perform well on paper, they fail to

live up to their CMRR specs when fed from even slightly unbalanced source impedances — a

common situation in almost any pro sound environment. This is because conventional stages

have low common-mode input impedance, which interacts with imbalances in source

impedance to unbalance common-mode signals, making them indistinguishable from desired,

balanced signals.

Developed by Bill Whitlock of Jensen Transformers, the patented InGenius input stage uses

clever bootstrapping to raise its common-mode input impedance into the megohm range

without the noise penalty from the obvious solution of using high-valued resistors. Like

transformers, InGenius line receivers maintain their high CMRR over a wide range of source

impedance imbalances — even when fed from single-ended sources. But unlike transformers,

these wide bandwidth solid state devices offer dc-coupling, low distortion, and transparent

sound in a small package at reasonable cost.

 

Model

Gain

Package

Part Number

Quantity per Packing Unit

1200

0 dB

8 Pin DIP

1200P08-U

50

8 pin SO

1200S08-U

98

1203

-3 dB

8 Pin DIP

1203P08-U

50

8 pin SO

1203S08-U

98

1206

-6 dB

8 Pin DIP

1206P08-U

50

8 pin SO

1206S08-U

98

 

All 1200 series parts are lead-free.

 

1200S08-U Series

1200P08-U Series

 

 

For pricing and more information: icsales@cedos.com

To download the datasheets in PDF format, please click on the picture.

 

Audio manufacturers who include InGenius in their products are providing a real, audible benefit to their customers. Like the ‘Intel Inside’ campaign, the InGenius Identity program helps participating manufacturers get this point across to their customers.

 

 

Basic Specifications

 

Minimum

Typical

Input Voltage Range
Differential -
 (equal & opposite swing)

 

 

1200

21.0 dBu

21.5 dBu

1203

24.0 dBu

24.5 dBu

1206

24.0 dBu

24.5 dBu

Output Noise (BW = 20 kHz)

 

 

1200

 

-106 dBu

1203

 

-105 dBu

1206

 

-107 dBu

CMRR (matched source impedances):
Vcm = +/-10V

 

 

DC:

70 dB

90 dB

60 Hz:

70 dB

90 dB

20 kHz:

---

85 dB

Total Harmonic Distortion:

0.0005%

Absolute Maximum Ratings

Positive Supply Voltage:

+20 V

Negative Supply Voltage:

-20 V

Input Voltage:

THAT1200   ± 25 V
THAT1203   ± 31 V
THAT1206   ± 31 V

Output Short Circuit Duration:

Continuous

Operating Temperature Range:

0 to +85 °C

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Copyright © 2007 CEDOS Electronics
Last modified: 04/12/08