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NTE1786 Integrated Circuit Frequency Lock Loop (FLL) Tuning & Control Circuit
Description: The NTE1786 is an integrated circuit in a 24-Lead DIP type package that provides closed-loop digital tuning of TV receivers, with or without AFC, as required. This device also controls up to 4 analog functions, 4 general purpose I/O ports and 4 high-current outputs for tuner band selection. Features: D Combined Analog and Digital Circuitry Minimizes the Number of Additional Interfacing Components Required D Frequency Measurement with Resolution of 50kHz D Selectable Prescaler Divisor of 64 or 256 D 32V Tuning Voltage Amplifier D 4 High-Current Outputs for Direct Band Selection D 4 Static Digital-to-Analog Convertors (DACs) for Control of Analog Functions D 4 General Purpose Input/Output (I/O) Ports D Tuning with Control of Speed and Direction D Tuning with or without AFC D Single-Pin, 4MHz On-Chip Oscillator D I2C Bus Slave Transceiver Applications: D TV Receivers D Satellite Receivers D CATV Converters Absolute Maximum Ratings: Supply Voltage Ranges, Pin13, VCC1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3 to +18V Pin19, VCC2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3 to +18V Pin14, VCC3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3 to +36V
Absolute Maximum Ratings (Cont'd): Input/Output Voltage Ranges, Pin2, VSDA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3 to +18V Pin3, VSCL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3 to +18V Pin4 to Pin7, VP2X . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3 to +18V Pin8 & Pin9 (Note 1), VAFC+, VAFC- . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3 to VCC1 Pin10, VTI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3 to VCC1 Pin12 (Note 2), VTUN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3 to VCC3 Pin15 to Pin18 (Note 2), VP1X . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3 to VCC2 Pin20 (Note 1), VFDIV . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3 to VCC1 Pin21, VOSC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3 to +5V Pin1, Pin22 to Pin24 (Note 1), VDACX . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3 to VCC1 Total Power Dissipation, PTOT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1000mW Operating Ambient Temperature Range, TA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -20 to +70C Storage Temperature Range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -65 to +150C Note 1. Pin voltage may exceed supply voltage if current is limited to 10mA. Note 2. Pin voltage must not exceed 18v but may exceed VCC2 of current is limited to 200mA. DC and AC Electrical Characteristics:
Parameter Supply Voltage Symbol VCC1 VCC2 VCC3 Supply Current (No Outputs Loaded) ICC1 ICC2 ICC3 Additional Supply Currents (A) Total Power Dissipation Operating Ambient Temperature I2C Input Voltage, HIGH Input Voltage, LOW Input Current, HIGH Input Current, LOW I2C Output Voltage, LOW Maximum Output Sink Current Input Voltage, HIGH Input Voltage, LOW Input Current, HIGH Input Current, LOW Output Voltage, LOW Maximum Output Sink Current ICC2A ICC3A PTOT TA VIH VIL IIH IIL VOL IOL VIH VIL IIH IIL VOL IOL IOL = 2mA IOL = 3mA Note 4 Note 4 Note 3 Note 3
(TA = +25C, VCC1, VCC2, VCC3 at typical voltages unless otherwise specified)
Test Conditions Min 10.5 4.7 30 18 0 0.2 -2 0.2 - -20 3 -0.3 - - - - 2 -0.3 - - - - Typ 12.0 13.0 32 30 - 0.6 - - 380 - - - - - - 5 - - - - - 4 Max 13.5 16.0 35 45 0.1 2.0 IOHP1X 2.0 - +70 VCC-1 1.5 10 10 0.4 - 16 0.8 25 25 0.4 - Unit V V V mA mA mA mA mA mW C V V A A V mA V V A A V mA
Bus Inuts SDA Input (Pin2); SCL Input (Pin3)
Bus Outputs SDA Output (Pin2, Open Collector)
Open-Collector I/O Ports P20, P21, P22, P23 (Pin4 to Pin7, Open Collector)
Note 3. For each band-select output which is programmed at logic 1, sourcing a current IOOP1X, the additional supply currents (A) shown must be added to ICC2 and ICC3, respectively. Note 4. If VCC1 < 1V, the input current is limited to 10A at input voltages up to 16V.
DC and AC Electrical Characteristics (Cont'd): (TA = +25C, VCC1, VCC2, VCC3 at typical voltages unless otherwise specified)
Parameter Transconductance for Input Voltages up to 1V Differential Symbol g00 g01 g10 g11 Tolerance of Transconductance Multiplying Factor (2, 4, or 8) when Correction-in-Band is Used Input Offset Voltage Common-Mode Input Voltage Common-Mode Rejection Ratio Power Supply (VCC1) Rejection Ratio Input Current Maximum Output Voltage Maximum Output Voltage Mg Test Conditions AFCS1: 0, AFCS2: 0 AFCS1: 0, AFCS2: 1 AFCS1: 1, AFCS2: 0 AFCS1: 1, AFCS2: 1 Min 100 15 30 60 -20 Typ 250 25 50 100 - Max 800 35 70 140 +20 Unit nA/V A/V A/V A/V % AFC Amplifier Inputs AFC+, AFC- (Pin8, Pin9)
VIOFF VCOM CMRR PSRR II VTUN VTM00 VTM10 VTM11 ILOAD = 2.5mA ILOAD = 2.5mA, VTMI1: 0, VTMI0: 0 ILOAD = 2.5mA, VTMI1: 1, VTMI0: 0 ILOAD = 2.5mA, VTMI1: 1, VTMI0: 1
-75 3 - - - VCC3-1.6 300 450 650 2.5 - -5 - TUHN1: 0, TUHN0: 0 TUHN1: 0, TUHN0: 1 TUHN1: 1, TUHN0: 0 TUHN1: 1, TUHN0: 1 0.4 4 15 130 -20
- - 50 50 - - - - - - 40 - 60 1.0 8 30 250 -
+75 VCC1-2.5 - - 500 VCC3-0.4 500 650 900 8.0 - +5 - 1.7 14 48 370 +20
mV V dB dB nA V mV mV mV mA mA nA dB A/V A/V A/V A/V % A A A A %
Tuning Voltage Amplifier Input TI, Output TUN (Pin10, Pin12)
Maximum Output Source Current Maximum Output Sink Current Input Bias Current Power Supply (VCC3) Rejection Ratio Minimum Charge IT to Tuning Voltage Amplifier
-ITUNH ITUNL ITI PSRR CH00 CH01 CH10 CH11
Tolerance of Charge (or VTUN) Multiplying Factor when COIB and/or TUS are Used Maximum Current I into Tuning Amplifier
CH
IT00 IT01 IT10 IT11
TUHN1: 0, TUHN0: 0 TUHN1: 0, TUHN0: 1 TUHN1: 1, TUHN0: 0 TUHN1: 1, TUHN0: 1
1.7 15 65 530 -15
3.5 29 110 875 -
5.1 41 160 1220 +15
Correction-in-Band Tolerance of Correction-in-Band Levels 12V, 18V, and 24V Output Voltge, HIGH Output Voltage, LOW VCIB
Band-Select Output Ports P10, P11, P12, P13 (Pin15 to Pin18) VOH VOL -IOH = 50mA, Note 5 IOL = 2mA VCC2-0.6 - - - - 0.4 V V
Note 5. At continuous operation the output current should not exceed 50mA. When the output is short-circuited to GND for several seconds the device may be damaged.
DC and AC Electrical Characteristics (Cont'd): (TA = +25C, VCC1, VCC2, VCC3 at typical voltages unless otherwise specified)
Parameter Maximum Output Source Current Maximum Output Sink Current FDIV Input (Pin20) Input Voltage (Peak-to-Peak Value) Duty Cycle Maximum Input Frequency Input Impedance Input Capacitance OSC Input (Pin21) Crystal Resistance at Resonance (4MHz) DAC Outputs (Pin1, Pin22 to Pin24) Maximum Output Voltage (No Load) Minimum Output Voltage (No Load) Positive Value of Smallest Step Deviation from Linearity Output Impedance Maximum Output Source Current Maximum Output Sink Current Power-Down Reset Maximum Supply Voltage (VCC1) at which Power-Down Reset is Active VCC1 Rise Time During Power-Up (Up to VPD) Voltage Level for Valid Module Address Voltage Level at P20 (Pin4) for Valid Module Address as a Function of MA1, MA0 VVA00 VVA01 VVA10 VVA11 MA1: 0, MA0: 0 MA1: 0, MA0: 1 MA1: 1, MA0: 0 MA1: 1, MA0: 1 -0.3 -0.3 2.5 VCC1-0.3 - - - - 16 0.8 VCC1-2 VCC1 V V V V VPD 7.5 - 9.5 V s ZD -IDH IDL ILOAD = 2mA VDH VDL VD VCC1 = 12V, Note 6 VCC1 = 12V, Note 6 1 Least Significant Bit 10.0 0.1 0 - - - - - - - - - - 8 11.5 1.0 350 0.5 70 6 - V V mV V mA mA RX - - 150 fMAX Zi CI VFDIVP-P) tRISE and tFALL 40ns 0.1 40 14.5 - - - - - 8 5 2.0 60 - - - V % MHz k pF Symbol -IOH IOL Test Conditions Note 5 Min - - Typ 130 5 Max 200 - Unit mA mA Band-Select Output Ports (Cont'd) P10, P11, P12, P13 (Pin15 to Pin18)
tR
5
-
-
Note 5. At continuous operation the output current should not exceed 50mA. When the output is short-circuited to GND for several seconds the device may be damaged. Note 6. Values are proportional to VCC1.
Pin Connection Diagram DAC3 Output 1 Serial Data Line 2 Serial Clock Line 3 P20 4 P21 5 I/O Ports P22 6 P23 7 AFC (+) Input 8 AFC (-) Input 9 Tuning Voltage Amp 10 Invert Input GND 11 Tuning Voltage Amp 12 Output 24 23 22 21 20 19 18 17 16 15 14 13 DAC2 Output DAC1 Output DAC0 Output X'tal OSC Input Prescaler Input VCC 2 (13V Typ) P13 P12 Band Select P11 Output Ports P10 VCC 3 (32V Typ) VCC 1 (12V Typ)
24
13
1
12
1.300 (33.02) Max .255 (5.73) Max
.520 (13.2)
.100 (2.54) 1.100 (27.94)
.126 (3.22) Min
.600 (15.24)

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