that1290 THAT Corporation, that1290 Datasheet

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that1290

Manufacturer Part Number
that1290
Description
Low Cost Dual Balanced Line Receiver Ics
Manufacturer
THAT Corporation
Datasheet
• Good CMRR: typ. 50 dB at 60Hz
• Low cost, self-contained, dual
• Excellent audio performance
• Low current: typ. 3 mA (per amplifier)
• Several gains: 0 dB, ±3 dB, ±6 dB
tial amplifiers was designed primarily for use as
balanced line receivers for audio applications.
Gains of 0 dB, ±3 dB, and ±6 dB are available to
suit various applications requirements.
thin-film resistors which offer good matching and
excellent
construction. Manufactured in THAT Corpora-
tion’s proprietary complementary dielectric isola-
tion (DI) process, the 1290 series provides the
– Wide bandwidth: typ. >7.6 MHz
– High slew rate: typ. 14 V/μs
– Low distortion: typ. 0.0006% THD
– Low noise: typ. -104 dBu
The THAT 1290 series of precision differen-
These devices include on-board precision
16
1
Ref A
NC
THAT1290
THAT1293
THAT1296
Part No.
tracking
R
R
3
4
15
Out A
2
FEATURES
In- A
R
R
2
1
14
Figure 1. Equivalent circuit
Sns A
3
Tel: +1 508 478 9200; Fax: +1 508 478 0990; Web: www.thatcorp.com
In+ A
due
THAT Corporation; 45 Sumner Street; Milford, MA 01757-1656; USA
Copyright © 2008, THAT Corporation
-3 dB
-6 dB
Gain
0 dB
13
4
to
V
V
CC
EE
their
12
Sns B
5
In+ B
R
R
1
2
R
1
monolithic
11
& R
6
Out B
R
R
In- B
4
3
3
Description
10
Ref B
7
NC
R
2
& R
9
8
NC
NC
4
sonic benefits of discrete designs with the
simplicity, reliability, matching, and small size of
a fully integrated solution.
50 dB of common-mode rejection. With 14 V/μs
slew rate, 7.6 MHz or higher bandwidth, and
0.0006% THD, these devices are sonically trans-
parent.
typically a low 6 mA (3 mA per amplifier).
QSOP package.
• Balanced Audio Line Receivers
• Instrumentation Amplifiers
• Differential Amplifiers
• Precision Summers
• Current Shunt Monitors
Document 600121 Rev 01
All three versions of the part typically exhibit
The 1290 series is available in a 16-pin
Moreover,
APPLICATIONS
Low Cost Dual Balanced
THAT 1290, 1293, 1296
Pin Name
SENSE B
SENSE A
REF B
OUT B
OUT A
REF A
IN+ A
IN+ B
IN- A
IN- B
N/C
N/C
N/C
N/C
current
V
V
Table 1. Pin assignments
EE
CC
Line Receiver ICs
consumption
Pin Number
10
11
12
13
14
15
16
1
2
3
4
5
6
7
8
9
is

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that1290 Summary of contents

Page 1

... In Part No. Gain THAT1290 0 dB THAT1293 -3 dB THAT1296 -6 dB Figure 1. Equivalent circuit THAT Corporation; 45 Sumner Street; Milford, MA 01757-1656; USA Tel: +1 508 478 9200; Fax: +1 508 478 0990; Web: www.thatcorp.com Copyright © 2008, THAT Corporation APPLICATIONS • Balanced Audio Line Receivers • ...

Page 2

... Absolute resistance values can vary ±30% from the typical values shown. Input impedance is monitored by lot sampling. 6. Defined with respect to differential gain. 7. Parameter guaranteed over the entire range of power supply and temperature. THAT Corporation; 45 Sumner Street; Milford, MA 01757-1656; USA Tel: +1 508 478 9200; Fax: +1 508 478 0990; Web: www.thatcorp.com Page ...

Page 3

... V IN(DIFF) In+ Common-mode Input In- ~ In+ V IN(CM) Figure 2. Simplified test circuit (1/2 of 129x shown) THAT Corporation; 45 Sumner Street; Milford, MA 01757-1656; USA Tel: +1 508 478 9200; Fax: +1 508 478 0990; Web: www.thatcorp.com Page Conditions R = 2kΩ 1290 (0dB gain) 1293 (-3dB gain) ...

Page 4

... Figure 3. Representative input protection circuit THAT Corporation; 45 Sumner Street; Milford, MA 01757-1656; USA Tel: +1 508 478 9200; Fax: +1 508 478 0990; Web: www.thatcorp.com Page Theory of Operation 50 V below V protect the devices without constraining the allow- able signal swing at the input pins. The reference ...

Page 5

... Furthermore, the same constraints apply to v the differential analysis. Following the same reasoning as above, the maximum common-mode input signal for the 1290 is THAT Corporation; 45 Sumner Street; Milford, MA 01757-1656; USA Tel: +1 508 478 9200; Fax: +1 508 478 0990; Web: www.thatcorp.com Page (2V ...

Page 6

... Although the noise floor of 1296 is 1.5 dB lower than 1293 noise floor, the reduction in dynamic range 1 THAT Corporation; 45 Sumner Street; Milford, MA 01757-1656; USA Tel: +1 508 478 9200; Fax: +1 508 478 0990; Web: www.thatcorp.com Page 1.5 dB. The 1296 attenuates the input signal more than necessary to support a +24 dBu input ...

Page 7

... In+ Ref Figure line receiver THAT Corporation; 45 Sumner Street; Milford, MA 01757-1656; USA Tel: +1 508 478 9200; Fax: +1 508 478 0990; Web: www.thatcorp.com Page Applications Instrumentation Amplifier Application Figure 11 shows one half of a 1290 configured as an instrumentation amplifier. The two opamps ...

Page 8

... Out Ref gain with the control voltage node THAT1290 This circuit accepts and delivers over +24 dBu before clipping, and has a noise floor of -91.5 dBu (22 kHz bandwidth). By varying the Control Voltage, gains from - +40 dB may easily be achieved. The VCA’s “deci-linear” relationship between Control Voltage and gain makes the gain setting precise, predictable, and repeatable ...

Page 9

... In+ 10n V- U1B 10 4 1293 V EE Control Voltage 2 6.2mV/dB Figure 13. Voltage-controlled gain control of a balanced signal THAT Corporation; 45 Sumner Street; Milford, MA 01757-1656; USA Tel: +1 508 478 9200; Fax: +1 508 478 0990; Web: www.thatcorp.com Page -18 In- Sense 15 R1 Vout 909R ...

Page 10

... Document 600121 Rev 01 The THAT1290 series is available in a 16-pin QSOP package. Package dimensions are shown in Figure 14 below; Pinouts are given in Table 1 on page 1. Ordering information is provided in Table 2 below. The 1290 series package is entirely lead-free. The lead-frame is copper, plated with successive layers of nickel, palladium, and gold. This approach makes it possible to solder these devices using lead- free and lead-bearing solders ...

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