THAT1646P08-U THAT Corporation, THAT1646P08-U Datasheet - Page 9

• Manufacturer Part Number: THAT1646P08-U
• Description: IC, BALANCED LINE DRIVER, DIP-8
• Manufacturer: THAT Corporation

Specifications of THAT1646P08-U

• Device Type: Differential Line
• Supply Voltage Range: ± 4V To ± 18V
• Driver Case Style: DIP
• No. Of Pins: 8
• Operating Temperature Range: -40°C To +85°C
• Termination Type: Through Hole
• Filter Terminals: Through Hole
• Rohs Compliant: Yes
• No. Of Amplifiers: 1
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

THAT1606/1646 Balanced Line Driver ICs
other portions of the circuit. The capacitors should
be located as close as possible to the output connec-
tor and connected via a low-inductance path to chas-
sis ground, with the ferrite beads placed very nearby.
These components ensure that RFI current is di-
rected to the chassis and not through the relatively
low-impedance output of the 1646. The bypass ca-
pacitors and ferrite beads will have no effect on the
gain error of these line drivers at audio frequencies.
1606.
6. Hebert, Gary K., Thomas, Frank W., "The 48V Phantom Menace", presented at the 110th Audio Engineering Society Convention, May, 2001
The same RF protection scheme applies to the
In+
In-
100n
100n
C4
C5
In
Figure 9. 1606 with output common mode offset protection, RFI protection, and surge protection
7
6
5
Gnd
In+
In-
THAT Corporation; 45 Sumner Street; Milford, Massachusetts 01757-1656; USA
12
11
Vcc
Vee
Vee
Vcc
Tel: [phone]; Fax: [phone]; Web: www.thatcorp.com
4
3
Figure 8. 1646 with output common mode offset protection and RFI protection
100n
100n
C4
C5
Cap1
13
Cap2
Gnd
In
Vee
Vcc
Vcc
6
5
Vee
U1
THAT1606
Out+
Out-
100n
Copyright © 2007, THAT Corporation; All rights reserved.
C1
Sns+
Sns-
2
14
3
7
Out+
Out-
THAT1646
8
U1
10u
10u
NP
NP
C1
C2
1
1M0
R1
1N4004
1N4004
Page 9 of 12
1N4004
D6
D3
Ferrite Bead
D5
Ferrite Bead
L2
L1
Output protection
etary internal protection scheme, which will suffice
for most situations seen in the field. For instance,
one might foresee having the line driver's output mis-
takenly
preamplifier input that has +48V phantom power ap-
plied. When this happens, the ac coupling capacitors
on the preamp's input will discharge into the
low-impedance output of the 1606/1646. This can
result in surge currents of over 2 amperes
amount of energy stored in these capacitors is di-
Ferrite Bead
The 1606 and 1646 each incorporate a propri-
1N4004
Ferrite Bead
D4
L2
L1
plugged
100p
C3
100p
C8
100p
C3
100p
directly
C8
Document 600078 Rev 04
XLR (M)
1
into
3
2
a
XLR (M)
1
microphone
3
2
6
.
The