NTE973D
Integrated Circuit
Double Balanced Modulator/Demodulator
Description:
The NTE973D is a balanced modulatior/demodulator in a 14Lead DIP type package designed for
use where the output voltage is a product of an input voltage (signal) and a switching function (carrier).
Typical applications include suppressed carrier and amplitude modulation, synchronous detection,
FM detection, phase detection, and chopper applications.
Features:
D
Excellent Carrier Suppression:
65dB typ @ 0.5MHz
50db typ @ 10MHz
D
Adjustable Gain and Signal Handling
D
Balanced Inputs and Outputs
Absolute Maximum Ratings: (T
A
= +25
C unless otherwise specified)
Applied Voltage,
V
(V
6
V
7
, V
8
V
1
, V
9
V
7
, V
9
V
8
, V
7
V
4
, V
7
V
1
, V
8
V
4
, V
6
V
8
, V
2
V
5
, V
3
V
5
)
30V
. . . . . . . . .
Differential Input Signal, V
7
V
8
+5.0V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Differential Input Signal, V
4
V
1
(5 + I
5
R
e
) V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Maximum Bias Current, I
5
10mA
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operating Temperature Range, T
A
0
to +70
C
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Storage Temperature Range, T
stg
65
to +150
C
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Thermal Resistance, JunctiontoAmbient, R
thJA
100
C/W
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Electrical Characteristics:
(V
CC
= 12V, V
EE
= 8V, I
5
= 1mA, R
L
= 3.9k
, R
e
= 1k
, T
A
= +25
C,
Note 1 unless otherwise specified)
Parameter
Symbol
Test Conditions
Min
Typ
Max
Unit
Carrier Feedthrough
V
CFT
V
C
= 60mV
rms
sine wave
f
C
= 1kHz
40
V
rms
and offset adjusted to
zero
f
C
= 10MHz
140
V
rms
V
C
= 300mV
PP
square
Offset adjusted to zero
0.04
0.4
mV
rms
wave, f
C
= 1kHz
Offset not adjusted
20
200
mV
rms
Carrier Suppression
V
CS
f
S
= 10kHz, 300mV
rms
,
f
C
= 500kHz
40
65
dB
60mV
rms
sine wave
f
C
= 10MHz
50k
dB
Note 1. All input and output characteristics are singleended unless otherwise specified)
Electrical Characteristics (Cont'd): (V
CC
= 12V, V
EE
= 8V, I
5
= 1mA, R
L
= 3.9k
, R
e
= 1k
,
T
A
= +25
C, Note 1 unless otherwise specified)
Parameter
Symbol
Test Conditions
Min
Typ
Max
Unit
Transadmittance Bandwidth (Magnitude)
BW
3dB
Carrier Input Port, R
L
= 50
, V
C
= 60mV
rms
sine
wave, f
S
= 1kHz, 300mV
rms
sine wave
300
MHz
Signal Input Port, R
L
= 50
, V
S
= 300mV
rms
sine
wave, |V
C
| = 0.5V
80
MHz
Signal Gain
A
VS
V
S
= 100mV
rms
, f = 1kHz, |V
C
| = 0.5V
2.5
3.5
V/V
SingleEnded Input Impedance,
r
ip
Parallel Input Resistance, f = 5MHz
200
k
Signal Port
c
ip
Parallel Input Capacitance, f = 5MHz
2.0
pF
SingleEnded Output Impedance,
r
op
Parallel Output Resistance, f = 10MHz
40
k
Signal Port
c
op
Parallel Output Capacitance, f = 10MHz
5.0
pF
Input Bias Current
I
bS
I
bS
= (I
1
+ I
4
) / 2
12
30
A
I
bC
I
b
C = (I
7
+ I
8
) / 2
12
30
A
Input Offset Current
|I
ioS
|
I
ioS
= I
1
I
4
0.7
7.0
A
|I
ioC
|
I
io
C = I
7
I
8
0.7
7.0
A
Average Temperature Coefficient of
Input Offset Current
|TC
Iio
|
T
A
= 55
to +125
C
2.0
nA/
C
Output Offset Current
|I
oo
|
I
6
I
9
14
80
A
Average Temperature Coefficient of
Output Offset Current
|TC
Ioo
|
T
A
= 55
to +125
C
90
nA/
C
CommonMode Input Swing
CMV
Signal Port, f
S
= 1kHz
5.0
V
PP
CommonMode Gain
ACM
Signal Port, f
S
= 1kHz, |V
C
| = 0.5V
85
dB
CommonMode Quiescent Output Voltage
V
out
Pin6 or Pin9
8.0
V
PP
Differential Output Voltage Swing Capability
V
out
8.0
V
PP
Power Supply Current
I
CC
I
6
+ I
9
2.0
4.0
mA
I
EE
I
10
3.0
5.0
mA
DC Power Dissipation
P
D
33
mW
Note 1. All input and output characteristics are singleended unless otherwise specified)
Pin Connection Diagram
N.C.
() Output
() Signal Input
Gain Adjust
(+) Carrier Input
N.C.
() Carrier Input
N.C.
V ()
N.C.
(+) Output
Bias
Gain Adjust
(+) Signal Input
1
2
3
4
5
6
7
14
13
12
11
10
9
8
PDF 
ZIP
