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