NTE NTE1570

NTE1570 (NPN Tuner) & NTE1572 (FET Tuner)
Integrated Circuit
TV Video IF, Sound IF
Functions:
PIF
D Three Controlled IF Amplifier Stages
D Video Demodulator Controlled by Picture Carrier
D Black Noise and White Noise Inverter
D Peak AGC
D DC Amplifier for RF AGC Out
SIF
D Three Differential IF Amplifier Stages
D Phase Detector
D DC Controlled Attenuator
D Audio Amplifier Stage with NFB Terminal
Features:
D PIF, SIF, ATT Audio Driver
D 2 Chip Color TV System is Possible with NTE1547
PIF
SIF
D High Gain, Wide Band IF Amplifier
D Excellent Limiter Charactristics
D AGC Characteristics with Excellent Stability D Excellent Attenuato Characteristics
D Excellent DG/DP Characteristics
D Excellent S/N Chracteristics due to Delayed 3
Stage AGC Action
D Negative Video Output Signal
D Switch Off the Video Part with VTR Switch
Absolute Maximum Ratings: (TA = +25°C unless otherwise specified)
Supply Voltage, VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15V
Pin11 Open Voltage, V11 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15V
Video DC Output Current, I15 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6mA
Audio DC Output Current, I3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3mA
Pin2 Voltage, V2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15V
Power Dissipation, PD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.6W
Derate Above 25°C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12.8mW/°C
Operating Temperature Range, Topr . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –20° to +65°C
Storage Temperature range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –55° to +150°C
Electrical Characteristics: (TA = +25°C, VCC = 12V, fp = 58.75MHz, fS = 54.25MHz)
Parameter
Symbol
Test Conditions
Min
Typ
Max
Unit
PIF Section
Recommended Supply Voltage
VCC
10.8
12.0
13.2
V
Supply Current
ICC
50
72
95
mA
Video DC Output Voltage
NTE1570
V15
5.2
5.5
5.8
V
5.3
6.8
8.3
V
–1.5
0
+1.5
V
–
–
0.5
V
–
–
1.0
µA
NTE1572
AFT DC Output Voltage
NTE1570
SW1: 1, SW2: 2
V13
NTE1572
NTE1570
V14
∆V13–14
SW1: 2, SW2: 2
SW1: 1, SW2: 2
V11(sat)
NTE1572
RF AGC Leakage Current
NTE1570
SW1: 2, SW2: 2
SW1: 1, SW2: 2
NTE1572
RF AGC Residual Output Voltage
NTE1570
SW1: 2, SW2: 2
SW1: 1, SW2: 2
NTE1572
AFT DC Offset Voltage
NTE1570
SW1: 2, SW2: 2
SW1: 2, SW2: 2
SW1: 1, SW2: 2
I11(leak)
NTE1572
SW1: 2, SW2: 1
SW1: 1, SW2: 1
vi
Note 1
60
150
250
µVrms
AGC Range
∆APIF
Note 2
60
64
–
dB
Sync Tip Level Voltage (V15)
VSYNC
Note 3
2.3
2.5
2.7
V
Maximum IF Input Voltage (PIF)
iIN(MAX)
Note 4
100
120
–
mVrms
White Noise Threshold Level (V15)
VWTH
Note 5
5.8
6.2
6.6
V
White Noise Clamp Level (V15)
VWCL
Note 5
3.7
4.1
4.5
V
Black Noise Threshold Voltage (V15)
VBTH
Note 5
1.4
1.6
1.8
V
Black Noise Clamp Level (V15)
VBCL
Note 5
2.9
3.3
3.7
V
Video Frequency Response
fBW
Note 6
4.5
5.5
–
MHz
Suppression of Carrier
CL
Note 7
40
50
–
dB
Suppression of 2nd Carrier
I2nd
Note 8
40
50
–
dB
920kHz Beat Level
I920
Note 9
33
38
–
dB
Differential Phase
DP
Note 10
–
3.5
5.0
deg
Differential Gain
DG
Note 10
–
7
10
%
PIF Input Impedance
RIN(PIF)
Note 11
1.5
3.0
6.0
kΩ
PIF Input Capacitance
CIN(PIF)
Note 11
–
3
10
pF
V13U, V14U Note 13
11.7
11.9
12.0
V
V13L, V14L
1.8
2.3
2.8
V
Video Sensitivity (Pin7–Pin8)
AFT Output Voltage
Upper
Lower
Electrical Characteristics (Cont’d): (TA = +25°C, VCC = 12V, fp = 58.75MHz, fS = 54.25MHz)
Parameter
RF AGC Maximum Available Current
NTE1570
Symbol
I4(max)
NTE1572
Test Conditions
Min
Typ
Max
Unit
SW1: 2, SW2: 1
7.0
–
–
mA
SW1: 1, SW2: 1
0.3
–
–
mA
RF AGC Delay Setting Range (Delay)
VIN
Note 14
5
7
9
V
AFT Band Width
∆FW
Note 13
1.4
–
–
MHz
Video Output Voltage
vOUT
Note 15
2.25
2.50
2.75
V
SIF Output Voltage
SOUT
Note 16
200
400
600
mVrms
RD = ∞, Note 17
–
200
400
µVrms
SIF Section
Input Limiting Voltage
vIN(LIM)
AM Rejection Ratio
AMR
SIF IN: f = 4.5MHz, fm = 400Hz,
∆f = ±25kHz, AM: 30%,
vin = 100dBµ
40
45
–
dB
Recovered Output Voltage
VOD
SIF IN: f = 4.5MHz, fm = 400Hz,
∆f = ±25kHz, vin = 80dBµ,
RD = 12kΩ
0.5
0.75
–
Vrms
Total Harmonic Distortion
THD
SIF IN: f = 4.5MHz, fm = 400Hz,
∆f = ±25kHz, vin = 80dBµ
–
1.0
–
%
Max. Audio Output Voltage
vOM
SIF IN: f = 4.4 to 4.6MHz
4.0
–
–
VP–P
SIF Input Impedance
RIN(SIF)
f = 4.5MHz
10
20
30
kΩ
SIF Input Capacitance
CIN(SIF)
f = 4.5MHz
–
3.0
–
pF
DET Output Impedance
RO(DET)
Note 18
10
15
20
kΩ
SW1: 2, SW2: 2
3.5
4.4
5.3
V
SW1: 1, SW2: 2
3.5
4.4
5.3
V
SW1: 2, SW2: 2
4.8
6.0
7.2
V
SW1: 1, SW2: 2
4.8
6.0
7.2
V
SW1: 2, SW2: 2
6.0
6.7
7.4
V
SW1: 1, SW2: 2
6.0
6.7
7.4
V
Note 19
60
–
–
dB
4
6
8
dB
Note 22
3.4
3.8
4.2
V
Note 23
4.5
4.9
5.3
V
vPT
Note 20
–
1.0
3.0
mVrms
GV AF
Note 21
–
20
–
dB
–
1.5
–
%
DC Voltage, Pin21
NTE1570
V21
NTE1572
DC Voltage, Pin23
NTE1570
V23
NTE1572
DC Voltage, Pin1
NTE1570
V1
NTE1572
Max. Attenuation
ATT MAX
DC Volume Gain
GATT MAX RA = 0
ATT Characteristics
Signal Leakage
AF Amp Gain
V1
AF Amp Distortion
THD AF
P23A = 1VPP, 400Hz, SW3: ON,
ATT: –26dB Setting
AF Amp Max. Output Voltage
vOAFMAX
THDAF = 5%, Note 21
1.5
2.0
–
Vrms
SW1: 2, SW2: 2
6.7
7.7
8.8
V
SW1: 1, SW2: 2
6.7
7.7
8.8
V
AF Output DC Voltage
NTE1570
NTE1572
V3
Notes:
Note 1. VAGC (P5 EXT. Applying Voltage) = 11.5V, PIF IN: f = 58.75MHz 1kHz 30% AM Modulation.
Adjust PIF input level (vi) so that the detected output of P15A with high impedance probe will
be 0.8VP–P and measure the input level.
Note 2. VAGC = 4V. Measure PIF input level (vi) same as Note 1.
Note 3. PIF IN: f = 58.75MHz CW 15mVrms. Measure DC level of P15.
Note 4. PIF IN: f = 58.75MHz, APL 100%, 87.5% AM modulation. P5: Ppen.
(1) Adjust PIF input level 50mVP–P and measure the detected output level v01P–P.
(2) Then increase the input level so that the detected output level will be 1.1 x v01P–P
and measure the input level.
Note 5. VAGC = 8V. PIF IN: 58.75MHz ±10MHz variable or sweep 15mVrms measure DC level of
P15.
Note 6. VAGC = 8V (GR = 30dB). SG1: 58.75MHz CW, SG2: 58.65 to 40MHz variable.
(1) Setting output of SG1 so that DC level of P15 will be 4V.
(2) Setting output of SG2 (58.65MHz) so that AC level of P15 will be 0.5VP–P.
(3) Decreaseing frequency of SG2 until AC level of P15 will be 0.35VP–P
(–3dB of 0.5VP–P) then read fSG2 = F, fBW = 58.75–F MHz
Note 7. SG1: 58.75MHz, 1kHz 80% AM modulation 100mVrms. SG2, SG3: OFF. Setting VAGC so
that output AC level of P15 will be 2.7VP–P. Measure CL of P15 after setting to 0% AM of SG1.
Note 8. Measure I2nd of P15 same as Note 7.
Note 9. VAGC = 8V. SG1: 58.75MHz (P = Picture) 100mVrms. SG2: 54.25MHz (S = Sound)
32mVrms(–10dB of SG1). SG3: 55.17MHz (C = Chroma) 32mVrms(–10dB of SG1).
(1) Seting VAGC so that the output tip level (lower) of P15 will be 3V DC.
(2) Measure the level difference (dB) between c–level and 920kHz level.
Note10. VAGC = 8V. PIF IN: f = 58.75MHz video signal (ramp) 87,5% AM 100mVP–P. Setting ATT
so that the sync tip level of P15 will be 2.5V DC. Measure DP and DG.
Note 11. VAGC = 5V, f = 58.75MHz. Measure RIN, CIN.
Note12. AFT sensitivity ∆F/∆(V13–V14)
(1) INT, AGC (P5 Open)
(2) PIF Input: 58.75MHz ±1MHz, CW 15mVrms.
(3) Read the frequency (f1) of PIF when V13–V14 = –1V.
(4) Read the frequency (f2) of PIF when V13–V14 = 1V.
Then calculate ∆F/∆(V13–V14) = |f1–f2|
Note13. ∆FW, V13U, V14U, V13L, V14L
(1) INT AGC (P5 Open)
(2) PIF IN: 58.75MHz ±10MHz CW 15mVrms
(3) 9pF at Pin16 should b shorted
(4) Read the frequency (f1 or f2) when the V5 or V6 reduced to 90% level of A or B with
varing the frequency. Then band width is the difference from center requency (f0).
Note14. P5: Open. PIF IN: 58.75MHz CW 20mVrms.
(1) Adjust the voltage of Pin3 so that the voltage of Pin4 will be 6V DC.
(2) Measure the volatge at Pin3.
Note15. P5: Open. PIF IN: 58.75MHz, 100% APL 87.5% AM modulation signal amplitude 50mVP–P.
Measure detected output voltge (White peak to sync tip).
Note16. P5: Open. SG1: 58.75MHz CW 100mVrms. SG2: 54.25MHz CW 25mVrms. Measure SIF
(4.5MHz) output voltage at P15.
Note17. SIF IN: f = 4.5MHz, FM fMOD = 400Hz, ∆f = ±25kHz.
(1) Adjust SIF input level 100mVP–P and measure the detected output level vOS.
(2) Then decrease the input level so that the detected output level will be 3dB down of
vOS and measure the input level.
Notes (cont’d):
Note18. Output Impedance
(1) SIF IN: f = 4.5MHz, FM fMOD = 400Hz, ∆f = ±25kHz, 80dBµ.
(2) At P23 read the VO1 at RX = ∞, then read the RX when recovered output become
VO1/2 with varying the RX. The RX is the output impedance.
Note19. ATT MAX.
(1) SIF IN: f = 4.5MHz, FM fMOD = 400Hz, ∆f = ±25kHz, 80dBµ.
(2) Read the 400Hz component of VA1 at P2 with RA = 0, then read VA1’ with RA = ∞.
Note20. vPT
(1) SIF IN: f = 4.5MHz, FM fMOD = 400Hz, ∆f = ±25kHz, 80dBµ.
(2) Read the 400Hz component at P3.
Note21. GV AF
(1) Apply 400Hz 0.1Vrms signal to P2.
(2) Read the output voltage at P3.
Note22. Read the 400Hz component of VA1 at P2 with RA = 0. Set RA so that VA1’ = 1/2VA1 (–6dB),
then read DC voltage of Pin1 (V1).
Note23. Read the 400Hz component of VA1 at P2 with RA = 0. Set RA so that VA1’ = 3.16 x 10–3VA1
(–50dB), then read DC voltage of Pin1 (V1).
Pin Connection Diagram
Volume Control 1
NFB 2
Audio Output 3
Audio GND 4
IF AGC Filter/ 5
VCR Switch
PIF Input 6
PIF Input 7
PIF Input 8
PIF Input 9
RF AGC Delay 10
RF AGC Output 11
PIF GND 12
24
23
22
21
20
19
18
17
16
15
14
13
24
13
1
12
SIF Detector
De–Emphasis
SIF Detector
SIF Input
VCC
AFT Tank
Video Tank
Video Tank
AFT Tank
Video Output
AFT Output 2
AFT Output 1
1.300 (33.02)
Max
.520
(13.2)
.225
(5.73)
Max
.100 (2.54)
1.100 (27.94)
.126
(3.22)
Min
.600
(15.24)