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NTE1837 Integrated Circuit TV Tuner Controller
Description: The NTE1837 is a tuner controller integrated circuit in a 16-Lead DIP type package containing functions such as band switch, inverter, and low-pass filter. This device can be used as a frequency synthesizer or a voltage synthesizer, depending on the external application circuit. Functions: D Band Switch (Equivalent to the NTE1658: Refer to the Truth Table) D Inverter D Low-Pass Filter (Voltage Follower, Operational Amplifier) Features: D 2-Input, 5-Output Band Switch D Band Switch (NTE1658) Available by Changing Over C Pin D High Maximum Output Current, Low Saturation Voltage D Meet CATV Tuner Requirements D Frequency Synthesizer or Voltage Synthesizer Application depending on Inverter and Operational Amplifier Connections Absolute Maximum Ratings: (TA = +25C unless otherwise specified) Band Switch VCC1 Maximum Supply Voltage, V16max . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18V VCC2 Maximum Supply Current, I1max . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10mA Maximum Load Current I12, I13max (I1 = 6mA) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -60mA I14, I15max (VCC1 = 12V) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -60mA I11max . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25mA Maximum AB Input Current, I2, I3max . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2mA Maximum Applied Voltage (SW), V11max . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35V Inverter, Operation Amplifier VCC3 Maximum Supply Voltage, V6max . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35V VCC3 Maximum Supply Current, I6max . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5mA Maximum Applied Voltage, V8max . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35V Maximum Load Current, I8max . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5mA Maximum Input Voltage, V7max . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8V Maximum Input Current, I7max . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1mA Maximum Input Voltage, V9max . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . VCC -1V Common to 1, 2 Allowable Power Dissipation (TA +65C), Pdmax . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 600mW Operating Temperature Range, Topr . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -20 to +65C Storage Temperature Range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -55 to +125C
Operating Characteristics: (TA = +25C unless otherwise specified)
Parameter Band Switch Quiescent Current Output Saturation Voltage Input Threshold Voltage Output Leakage Current Inverter, Operational Amplifier, Zener Output Saturation Voltage Input Threshold Voltage Input Offset Voltage Input Bias Current V8 (sat) VTH VIO-1 VIO-2 IBIAS 0 2.5 -100 -100 - - - - - - 0.3 4.5 +100 +100 -190 V V mV mV nA ICC F (sat) SW (sat) VTH IL 0 0 0 0.8 0 - - - 1.5 - 9 0.7 0.7 3.0 -50 mA V V V A Symbol Test Conditions Min Typ Max Unit
Note 1. Current flowing into IC: Plus (No Sign) Current flowing out of IC: Minus Truth Table
Input A (Pin3) L H L H L H L H B (Pin2) L L H H L L H H C (Pin4) Open Open Open Open GND GND GND GND F1 (Pin15) H Z Z Z H Z Z Z F2 (Pin14) Z H Z Z Z H Z Z Output F3 (Pin13) Z Z H Z Z Z H H F4 (Pin12) Z Z Z H H H Z H SW (Pin11) Z L L L Z L L L
Note 2. Z: High Impedance
Pin Connection Diagram
VCC 2
1
16 VCC 1 15 F1 Output to Tuner 14 F2 Output to Tuner 13 F3 Output to Tuner 12 F4 Output to Tuner 11 Switch Output to Tuner 10 OP Amp Output 9 OP Amp Input
Band Select Input A 2 Band Select Input B 3 Band Select Input C 4 GND 5 VCC 3 6
Inverter Input 7 Inverter Output 8
16
9
.260 (6.6) Max
1
8
.785 (19.9) Max .200 (5.08) Max .245 (6.22) Min
.300 (7.62)
.100 (2.54) .700 (17.7)

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