that1286 THAT Corporation, that1286 Datasheet - Page 9

• Manufacturer Part Number: that1286
• Description: Dual Balanced Line Receiver Ics
• Manufacturer: THAT Corporation

THAT 1280 Series
Dual Balanced Line Receiver ICs
In 1 Lo
In 2 Lo
In 1 Hi
In 2 Hi
+24 dBu In
In Lo
In Hi
2
3
6
5
In-
In+
In-
In+
V CC
V+
Sense
V EE
Sense
11
V-
Ref
-3dB
4
Ref
14
10
Vout
Vout
12
8
U1A
1283
U1B
1283
Tel: [phone]; Fax: [phone]; Web: www.thatcorp.com
5
6
THAT Corporation; 45 Sumner Street; Milford, MA 01757-1656; USA
13
9
In-
In+
Sense
Control Voltage 1
Figure 13. Voltage-controlled gain control of a balanced signal
Control Voltage 2
8
10n
10n
C2
C5
Ref
Figure 12. Circuit for audio ADCs with balanced inputs
6.2mV/dB
6.2mV/dB
10
Vout
20k0
20k0
R2
R6
THAT
1283
U2
Copyright © 2007, THAT Corporation
10
7
U3A
2162(VCA1)
U3B
2162(VCA2)
2
3
EC+
IN
EC-
EC+
IN
EC-
9
4
13
6
11
GND
In-
In+
SYM
N/C
V CC
SYM
N/C
V+
8
Sense
-3dB
14
V-
V EE
14
Ref
12
3
OUT
OUT
Page 9 of 10
5
12
2
15
Vout
THAT
1283
U1
1
U3A
4580
2
3
6
5
14k3
V CC
14k3
V EE
22p
22p
U4B
4580
+27 dBu
13
R3
R7
C3
C6
V+
U4A
4580
V-
4
8
3
2
1
7
909R
909R
R3
1/2 Vref of ADC
R1
-18.8 dB
C1
2n2
7
6
5
7
6
5
Gnd
Gnd
In+
In-
In+
In-
V CC
V CC
V EE
V EE
Vee
Vee
Vcc
Vcc
12
12
11
11
Cap1
Cap1
Cap2
Cap2
+6dB
R2
237R
13
13
4
4
1606
1606
U5
U2
Out+
Out+
Out-
Out-
100n
100n
Document 600114 Rev 01
C1
C4
3
3
14
14
AIN+ to ADC
AIN- to ADC
2 Vrms Out
1M0
1M0
R1
R5
Out 1 Lo
Out 2 Lo
Out 1 Hi
Out 2 Hi