NTE NTE1837

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 = +25°C 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 ≤ +65°C), Pdmax . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 600mW
Operating Temperature Range, Topr . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –20° to +65°C
Storage Temperature Range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –55° to +125°C
Operating Characteristics: (TA = +25°C unless otherwise specified)
Parameter
Symbol
Test Conditions
Min
Typ
Max
Unit
ICC
0
–
9
mA
F (sat)
0
–
0.7
V
SW (sat)
0
–
0.7
V
Input Threshold Voltage
VTH
0.8
1.5
3.0
V
Output Leakage Current
IL
0
–
–50
µA
V8 (sat)
0
–
0.3
V
VTH
2.5
–
4.5
V
VIO–1
–100
–
+100
mV
VIO–2
–100
–
+100
mV
IBIAS
–
–
–190
nA
Band Switch
Quiescent Current
Output Saturation Voltage
Inverter, Operational Amplifier, Zener
Output Saturation Voltage
Input Threshold Voltage
Input Offset Voltage
Input Bias Current
Note 1. Current flowing into IC: Plus (No Sign)
Current flowing out of IC: Minus
Truth Table
Input
Output
A
(Pin3)
B
(Pin2)
C
(Pin4)
F1
(Pin15)
F2
(Pin14)
F3
(Pin13)
F4
(Pin12)
SW
(Pin11)
L
L
Open
H
Z
Z
Z
Z
H
L
Open
Z
H
Z
Z
L
L
H
Open
Z
Z
H
Z
L
H
H
Open
Z
Z
Z
H
L
L
L
GND
H
Z
Z
H
Z
H
L
GND
Z
H
Z
H
L
L
H
GND
Z
Z
H
Z
L
H
H
GND
Z
Z
H
H
L
Note 2. Z: High Impedance
Pin Connection Diagram
VCC 2
1
16 VCC 1
Band Select Input A 2
15 F1 Output to Tuner
Band Select Input B 3
14 F2 Output to Tuner
Band Select Input C 4
13 F3 Output to Tuner
GND 5
12 F4 Output to Tuner
VCC 3
6
11 Switch Output to Tuner
Inverter Input 7
10 OP Amp Output
Inverter Output 8
16
9 OP Amp Input
9
.260 (6.6) Max
1
8
.300
(7.62)
.785 (19.9)
Max
.200 (5.08)
Max
.245
(6.22)
Min
.100 (2.54)
.700 (17.7)