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: (VCC = 12V, VEE = –8V, I5 = 1mA, RL = 3.9kΩ, Re = 1kΩ, TA = +25°C,
Note 1 unless otherwise specified)
Parameter
Carrier Feedthrough
Symbol
Test Conditions
Min
–
Typ
40
Max
–
Unit
V
CFT
f
= 1kHz
µV
rms
V
= 60mV
sine wave
and offset adjusted to
zero
C
C
C
rms
f
= 10MHz
–
140
0.04
20
–
µV
rms
Offset adjusted to zero
Offset not adjusted
–
0.4
200
–
mV
V
C
= 300mV
square
rms
P–P
wave, f = 1kHz
C
–
mV
rms
Carrier Suppression
V
CS
f
C
f
C
= 500kHz
= 10MHz
40
–
65
dB
dB
f
S
= 10kHz, 300mV
,
rms
60mV
sine wave
rms
50k
–
Note 1. All input and output characteristics are single–ended unless otherwise specified)