NTE NTE969

NTE973D
Integrated Circuit
Double Balanced Modulator/Demodulator
Description:
The NTE973D is a balanced modulatior/demodulator in a 14–Lead 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: (TA = +25°C unless otherwise specified)
Applied Voltage, ∆V
(V6–V7, V8–V1, V9–V7, V9–V8, V7–V4, V7–V1, V8–V4, V6–V8, V2–V5, V3–V5) . . . . . . . . . 30V
Differential Input Signal, V7–V8 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +5.0V
Differential Input Signal, V4–V1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±(5 + I5Re) V
Maximum Bias Current, I5 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10mA
Operating Temperature Range, TA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0° to +70°C
Storage Temperature Range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –65° to +150°C
Thermal Resistance, Junction–to–Ambient, RthJA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100°C/W
Electrical Characteristics:
Parameter
Carrier Feedthrough
Carrier Suppression
(VCC = 12V, VEE = –8V, I5 = 1mA, RL = 3.9kΩ, Re = 1kΩ, TA = +25°C,
Note 1 unless otherwise specified)
Symbol
VCFT
VCS
Test Conditions
Min
Typ
Max
Unit
VC = 60mVrms sine wave
and offset adjusted to
zero
fC = 1kHz
–
40
–
µVrms
fC = 10MHz
–
140
–
µVrms
VC = 300mVP–P square
wave, fC = 1kHz
Offset adjusted to zero
–
0.04
0.4
mVrms
Offset not adjusted
–
20
200
mVrms
fS = 10kHz, 300mVrms,
60mVrms sine wave
fC = 500kHz
40
65
–
dB
fC = 10MHz
–
50k
–
dB
Note 1. All input and output characteristics are single–ended unless otherwise specified)
Electrical Characteristics (Cont’d): (VCC = 12V, VEE = –8V, I5 = 1mA, RL = 3.9kΩ, Re = 1kΩ,
TA = +25°C, Note 1 unless otherwise specified)
Parameter
Symbol
Transadmittance Bandwidth (Magnitude)
BW3dB
Signal Gain
AVS
Single–Ended Input Impedance,
Signal Port
Single–Ended Output Impedance,
Signal Port
Input Bias Current
Input Offset Current
Average Temperature Coefficient of
Input Offset Current
Typ
Max
Unit
Carrier Input Port, RL = 50Ω, VC = 60mVrms sine
wave, fS = 1kHz, 300mVrms sine wave
–
300
–
MHz
Signal Input Port, RL = 50Ω, VS = 300mVrms sine
wave, |VC| = 0.5V
–
80
–
MHz
2.5
3.5
–
V/V
Parallel Input Resistance, f = 5MHz
–
200
–
kΩ
cip
Parallel Input Capacitance, f = 5MHz
–
2.0
–
pF
rop
Parallel Output Resistance, f = 10MHz
–
40
–
kΩ
cop
Parallel Output Capacitance, f = 10MHz
–
5.0
–
pF
IbS
IbS = (I1 + I4) / 2
–
12
30
µA
VS = 100mVrms, f = 1kHz, |VC| = 0.5V
IbC
IbC = (I7 + I8) / 2
–
12
30
µA
|IioS|
IioS = I1 – I4
–
0.7
7.0
µA
|IioC|
IioC = I7 – I8
–
0.7
7.0
µA
TA = –55° to +125°C
–
2.0
–
nA/°C
I6 – I9
–
14
80
µA
TA = –55° to +125°C
–
90
–
nA/°C
|Ioo|
Average Temperature Coefficient of
Output Offset Current
Min
rip
|TCIio|
Output Offset Current
Test Conditions
|TCIoo|
Common–Mode Input Swing
CMV
Signal Port, fS = 1kHz
–
5.0
–
VP–P
Common–Mode Gain
ACM
Signal Port, fS = 1kHz, |VC| = 0.5V
–
–85
–
dB
Common–Mode Quiescent Output Voltage
Vout
Pin6 or Pin9
–
8.0
–
VP–P
Differential Output Voltage Swing Capability
Vout
–
8.0
–
VP–P
Power Supply Current
ICC
I6 + I9
–
2.0
4.0
mA
IEE
I10
–
3.0
5.0
mA
–
33
–
mW
DC Power Dissipation
PD
Note 1. All input and output characteristics are single–ended unless otherwise specified)
Pin Connection Diagram
(+) Signal Input 1
Gain Adjust 2
Gain Adjust 3
(–) Signal Input 4
Bias 5
(+) Output 6
N.C. 7
14 V (–)
13 N.C.
12 (–) Output
11 N.C.
10 (–) Carrier Input
9 N.C.
8 (+) Carrier Input
14
8
1
7
.785 (19.95)
Max
.300
(7.62)
.200 (5.08)
Max
.100 (2.45)
.600 (15.24)
.099 (2.5) Min