HA11485BNT_技术文档

HA11485BNT

•

Color TV /VCR Picture IF, Audio IF System

Features

• PIF amplifier, Video Detector, AGC Jungle, AFT

• 1st SIF Detector, FM limiter amplifier, FM Detector,

Audio DC ATT

Block Diagram

7Y

0.01µ

PIF

51k

21p

GND

82p

V

CC

100p

27 28

23 24

25

5

2

0.01µ

6

7

X

IF

1

IF

2

IF

3

IF

Input

0.01µ

AFT

26

1

P-Det

8

9

0.01µ

47k

V

0.01µ

CC

X

AFT

Output

V

RF

AGC

CC

Video

AMP

3

AGC

1st SIFL

Det

56k

100µ

10k

4,700p

29

4

V

10k

CC

12µ

0.01µ

220

3.3k

6.8k

30

18

Video

68k

3.3µ

1st SIF

AMP

Output

Audio

Difeat

10

11

NFB

X

Audio

Output

AMP

ATT

AMP

Lim

LM-Det

13

12

17

16

14

15

22

V

21

20 19

1k

V

56k

5k

CC

0.015µ

33p

0.01µ

470

CC

56p

SIF

23µ

2.7k

0.01µ

Unit

R: Ω

820

0.01µ

Audio

Output

C: F

L: H

0.01µ

HA11485BNT--1

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HA11485BNT

Absolute Maximum Ratings (Ta = 25˚C)

Item

Symbol

V_CC

Rating

15

Unit

V

Supply voltage

Power dissipation*

Operating temperature

P_T

900

mW

°C

Topr

Tstg

– 20 to +65

– 55 to +125

Storage temperature

°C

* Rated value at Ta = 65°C

Electrical Characteristics (V = 0V, Ta = 25˚C)

SS

Test

Circuit

Applicable

Terminal

Item

Symbol Min Typ Max Unit

Test Condition

Supply current

I_S

45

—

65

40

85

46

—

mA

5

1

PIF

sec-

tion

Input sensitivity

V_IN

dBµ

30

Maximum allowable input

Video bandwidth

V_IN(max)100 110

F_C

6

10

—

MHz

30

1

Video amplitude

V_out

2.14 2.50 2.92 Vp-p

Synchronization peak

value

V_SYNC

4.8

0.4

5.2

0.7

5.5

1.1

V

30

1

Noise blanking starting

voltage

V_NC

Differential gain

DG

—

5

3

—

%

30

1

Differential phase

DP

deg

Vertical periodic distor-

tion

V_VER

—

50

100 mV

30

1

Minimum RF AGC voltage V_TR(min)

Maximum RF AGC voltage V_TR(max)

—

0.1

0.5

—

V

3

1

2

11.0 11.7

V

3

Input resistance

R_IN

C_IN

R_OUT

V_M1

µ

—

1.5

3.0

30

kΩ

pF

7, 8

Input capacitance

Video output resistance

AFT midpoint voltage

AFT detection sensitivity

—

Ω

30

1

4.75 6.5

8.25

V

Quiescent

150 280 350 kHz/10V

1

AFT hold range

Upper f_AH

1.2

—

2.0

—

MHz

1

f_AL

Lower

–2.0 –1.2 MHz

Maximum AFT voltage

Minimum AFT voltage

V_A(max)

V_A(min)

11.0 11.7

0.5

—

V

—

1.0

HA11485BNT--2

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HA11485BNT

Electrical Characteristics (V = 0V, Ta = 25˚C) (cont)

SS

Test

Circuit

Applicable

Terminal

Item

Symbol Min Typ Max Unit

Test Condition

PIF

sec-

tion

RF AGC additional

attenuation amount

V_AT

—

1

5

6

dB

3

1

Delay point decrease

voltage

DDLV

S/N

(cont)

S/N ratio

47

6

52

10

—

dB

30

18

1

1st

Frequency characteristics f_S

MHz

SIF

sec-

tion

Detection output

Differential phase

Limiting sensitivity

Detection output

AM removal ratio

S_OUT

1

2

3

Vp-p

deg

18

1

DP

—

V_lim

—

46

52

dBµ

17

1

L_O(AF)

AMR₁

AMR₂

THD

2nd

SIF

sec-

tion

0.6

40

0.75 0.95 Vrms

17

1

50

1.0

—

dB

%

V_in= 100dBµ

V_in= 80dBµ

40

—

17

1

Total harmonic

distortion

2.0

Detection output DC offset ∆V_O

—

0.5

—

V

17

11

1

Non-distortion maximum

voltage

V_MAX

2.1

3.0

Vrms

ATT maximum attenua-

tion volume

ATT

65

—

0

—

dB

When ATT volume

is 1V

11

1

ATT temperature charac- DTATT

teristics

When ATT volume

is 4V

ATT maximum gain

ATTG

ATTV₁

ATTV₂

17

20

—

dB

V

11

13

1

ATT attenuation point

4.2

2.5

4.5

2.8

5.0

3.0

ATT output: –1dB

ATT output: –65dB

V

HA11485BNT--3

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HA11485BNT

Test Circuit

(1)

Terminal

L

9Y

L

C

0.01µ

3

10

BNC B

Terminal

120p

10k

R

26

5.6k

4

C

9

8

Terminal

D

VR!

10k

0.01µ 0.01µ

C

82p

N

5

C

0.01µ

51

R

1

2

C

G

Terminal

R

6

1k

16

120p

R

5

6.8k

L

5.6k

C

0.01µ

4

C

0.01µ

11

K

V

CC

Terminal

C

7

Terminal

P

R

3.6k

3

R

1k

8

21p

5.1k

SW5

C

100p

6

C

12

56p

30

29

28

27

26

25

24

23

22

21

20

19

18

17

16

PIF

Delay

AFT

Tank

SIF

CC

1st

Audio

2nd

IF Trap.

PIF

Tank

2nd SIF

Input

Output Point

Adj.

V

SIF

Output SIF

Det

Output

AFT

Output Gnd

RF

AGC

IF

AGC

PIF

CC

ATT

NFB

ATT

2nd SIF

Det

PIF Input

V

Output Input Volume

SW4

V

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

CC

C

10µ

18

C

R

16

100p

14

47k

L

C

0.01µ

6

19

C

0.01µ

Terminal

20

C

R

21

11

5.6k

R

13

68k

33µ

E

J

3.3µ

R

C

24

4,700p

15

56k

VR

2

Terminal

5k

2.7k

C

25

0.01µ

B

R

820

C

12

22

100µ

Terminal

0.01µ

SW1

C

0.01µ

R

C

0.01µ

C

0.01µ

14

25

51

23

9

* 1

1

Terminal

V

F

A

V

Terminal

CC

BNC A

BNC C

Terminal

H

* 1

6.3V unless otherwise specified

(2)

9Y

30

29

28

27

26

25

24

23

22

21

20

19

18

17

16

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

SW1

V

(12V)

CC

Note: Capacitor value is 0.01µF unless

CR

Meter

otherwise specified.

HA11485BNT--4

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HA11485BNT

Test Methods

Test

Input

Item

Symbol Diagram Signal

Terminal Test Method

Remarks

Supply current

I_S

Quiescent BNC A

1 BNC A

Measurement of current at pin 5

1

Input

sensitivity

V_IN

L terminal measured with synchroscope.

Input sensitivity taken as input level

SW2

when video input (pin 30) reduced by 1dB

10Y

1dB

V

Level (dBµ)

IF

Input sensitivity

PIF

sec-

tion

Maximum

allowable

input

V_{in max}

1

BNC A

V_IFlevel when video output (pin 30)

fluctuated ±5%

SW2

Video

bandwidth

F_C

4

3

BNC A

With SW1 closed, V1 adjusted so that

pin 30 input is approximately in the center

between carrier level and synchronize peak

value

SW1

SW2

With V1 fixed, voltage at K terminal

measured as modulation wave frequency is

varied and point noted at which frequency

characteristic drops by 3dB

SW2

10Y

3dB

F

C

Frequency (Hz)

Video

amplitude

V_out

1

BNC A

Measurement of K terminal output voltage

p-p value

SW2

80dBm

10Y

V

out

HA11485BNT--5

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HA11485BNT

Test Methods (cont)

Test

Input

Item

Symbol Diagram Signal

Terminal Test Method

Remarks

Synchro-

nization

peak value

voltage

V_SYNC

1

BNC A

Synchronization peak value level of video

output voltage at K terminal measured

with synchroscope

SW2

10Y

80dBµ

Synchronization

peak value level

Noise

V_NC

1

BNC A

Output at terminal K when there is no AGC

SW2

blanking

starting

voltage

80dBµ

noise affecting terminal K waveform

10Y

PIF

sec-

tion

(cont)

V

N

AGC drift

Noise

Differen-

tial gain

DG

DP

1

2

BNC A

Vectorscope connected to K terminal

for measurement

SW2

011Y

Differen-

80dBµ

tial phase

D.U.T

1

Vector-

scope

Terminal

3.9k

K

11Y

Vertical

periodic

distortion

V_VER

1

BNC A

Measurement of vertical periodic distortion

at K terminal

80dBµ

V

VER

Vertical synchronizing signal

HA11485BNT--6

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HA11485BNT

Test Methods (cont)

Test

Input

Item

Symbol Diagram Signal

Terminal Test Method

Remarks

Min-

imum RF

AGC voltage

V_{TR min}

1

BCN A

B terminal voltage measured when VR1

adjusted so delay point is 75dBµ

11Y

Max-

V_{TR max}

imum RF

AGC voltage

V

TR (MAX)

V

TR (MIN)

65dBµ

75dBµ

85dBµ

V

IF

PIF input

resistance

Pin 7

R_i7

R_i8

C_i7

C_i8

2

1

Measured using R-X meter with measuring

frequency of 58.75MHz

SW1

PIF input

resistance

Pin 8

PIF

sec-

tion

PIF input

capacitance

Pin 7

(cont)

PIF input

capacitance

Pin 8

Video output R_out

resistance

Quiescent

DC voltage measured at K terminal and used SW1

as value for variable A. Next, voltage at K

terminal when current of 1mA is extracted

from K terminal, and used as value for Vari-

able B. Finally, following calculation is per-

formed using measured values.

SW2

A – B (V)

–3

10 (A)

AFT mid-

point voltage

(quiescent)

V_M1

1

Voltage measured at J terminal when SW1

and SW4 are ON, and V1 voltage is 7 V

SW1

SW4

HA11485BNT--7

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HA11485BNT

Test Methods (cont)

Test

Input

Item

Symbol Diagram Signal

Terminal Test Method

Remarks

AFT

detection

sensitivity

µ

1

4

BNC A

SW3 closed, and V1 adjusted so that

12Y

the minimum point of K terminal

output becomes the synchronizing

peak value voltage

AFT hold

area (upper)

F_AH

1

7

Carrier zero level

AFT hold

area (lower)

F_AL

K terminal waveform

Synchronous peak

value level

Max. AFT

voltage

V_{A max}

58.75MHz

Min. AFT

voltage

V_{A min}

12Y

Next, J terminal output is measured

µ measurement

F

is performed

after converting

CW waveform

frequency

AH

11V

F

AL

1V

PIF

sec-

tion

58.75

V

(MHz)

A MIN

(cont)

Frequency

12Y

RF AGC

additional

attenuation

volume

V_AT

1

BNC A

VR1 adjusted to make delay point 75dBµ

V

AT

75dBµ

V

(dBµ)

IF

Delay point DDLV

reduction

voltage

1

BNC A

Delay point change when delay point

adjusted to 80dBµ by VR1 and supply.

Voltage is varied ±15%.

HA11485BNT--8

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HA11485BNT

Test Methods (cont)

Test

Input

Item

Symbol Diagram Signal

Terminal Test Method

Remarks

PIF S/N

sec-

tion

SN

1

4

BNC A

K terminal output measured using IF volt

80dBµ

meter when SW1 is closed and V1 voltage

set so K terminal voltage is synchronous

peak value and carrier zero level is at

midpoint. Next, following calculation is

performed:

(cont)

Video amplitude

0.875 × Measured value

20 log

× 0.75

1st

SIF

sec- istic

tion

Frequency

character-

F_C

1

4

3

BNC A

SW1 closed and V1 adjusted so Pin 30

output is at carrier zero level and synchro-

nous peak value level is almost at mid-

point.

SW2

V1 set and voltage at D terminal measured

while modulated wave frequency is varied.

Measurement is made when frequency

characteristic is 3dB down.

12Y

(V

rms

)

–3dB

F

C

Frequency (Hz)

13Y

1st

Detection

S_out

1

BNC A

SW2

SIF output

sec-

80dBµ

V

out

tion

Synchroscope used to measure output p-p at

D terminal.

13Y

Differential

phase

DP

1

2

BNC A

Measured by connecting vectorscope at

D terminal.

SW2

80dBµ

D.U.T

1

Vector-

scope

3.9 k

HA11485BNT--9

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HA11485BNT

Test Methods (cont)

Test

Input

Item

Symbol Diagram Signal

Terminal Test Method

Remarks

Limiting

V_lim

1

8

BNC B

f = 6.5MHz, ∆f = ±50kHz/dev, fm = 400Hz

SW1

13Y

sensitivity

signal input from BNC (B) terminal.

G terminal output measured using synchro-

scope, and input level measured in dBµ units

at 3dB down from maximum output.

3dB

(V

PP

)

V

lim

Input (dBµ)

Detection

output

V_OAF

1

8

BNC B

Output measured at G terminal when f =

6.5MHz, ∆f = ±50kHz/dev, fm = 400Hz,

100dBµ input from BNC (B) terminal

SW1

AM elimi-

nation

factor (1)

AMR(1)

8

10

V_OAF1= G terminal output when SW1

and SW2 are ON, and f = 6.5MHz, ∆f =

±50kHz/dev, fm = 400Hz, Vin = 100dBµ

input from BNC (B) terminal.

2nd

SIF

sec-

V

_OAF2= G terminal output for f = 6.5MHz,

fm = 400Hz, 30%, AM modulated input.

Calculation performed using the following

formula:

*1

tion

V_OAF1

AMR (1) = 20 log

V_OAF2

AM elimi-

nation

factor (2)

AMR(2)

THD

1

10

8

BNC B

Same as AM elimination factor (1),

except Vin = 80dBµ

SW1

Total

harmonic

distortion

L₇adjusted to THD optimum point and

measurement made at G terminal when

f = 6.5MHz, ∆f = ±50kHz/dev, fm = 400Hz,

Vin = 100dBµ input

Detection

output DC

offset

∆V_O

1

11

BNC B

G terminal voltage measured using volt-

meter when input signal varied in range of

100 to 60dBµ

SW1

∆Vo = initial set value – G terminal voltage

Maximum

undistorted

output

V_max

ATT

1

8

BNC B

BNC C

VR2 varied while monitoring F terminal

output with distortion meter. Output level

at F terminal measured when THD is 5%.

SW1

SW2

ATT max.

attenuation

volume

12

F terminal output level measured for H

terminal maximum output voltage and

minimum output voltage

SW1

F terminal output for

H terminal minimum

F terminal output for

H terminal maximum

20 log

HA11485BNT--10

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HA11485BNT

Test Methods (cont)

Test

Input

Item

Symbol Diagram Signal

Terminal Test Method

Remarks

2nd

SIF

sec-

tion

(cont)

ATT tempe- ATT

rature chara-

cteristic

1

8

BNC B

VR2 adjusted and H terminal D C voltage

SW1

100dBµ

set to 4V. Change in F terminal output level

when ambient temperature varied in range

of ∆Ta = +40 to –45.

*1

ATT max.

gain

ATT G

12

BNC C

Calculation based on measurement of F

terminal output when H terminal voltage

is 5V

SW1

SW2

Measured value

20 log

200mVrms

ATT

attenuatiuon

point 1

ATT V₁

ATT V₂

1

8

BNC B

Measurement of H terminal voltage when

H terminal voltage is 5V and F terminal

output level is – 1dB

SW4

ATT

attenuation

point 2

Measurement of H terminal voltage when

H terminal voltage is 5V and F terminal

output level is – 65dB

Note:1. Adjusted to synchronized point where output DC level is 5V.

14Y

Input Signals

14Y

• Staircase Signal Wave (No Chroma Signal)

• Staircase Signal Wave (With Chroma Signal)

f = 58.75MHz

f = 58.75MHz,

DSB 5% chro-

ma signal

added to

staircase sig-

nal wave 1.

87.5% modulation

25% modulation level

for synchronous com-

ponents

14Y

• Sine Modulated Wave

• CW

f = 58.75MHz

25% modulation

HA11485BNT--11

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HA11485BNT

14Y

• Rectangular Modulated Wave

• Noise Signal Waveform

Noise pulse

14Y

Rectangular

1 to 5ms

Modulated Wave

f=58.75MHz

30 to 50ms

10µs

White signal

50% modulation

1H

One noise pulse per 1V period.

• IF Sweep Signal

• FM modulated wave

• AM modulated wave

• CW

15Y

f₀=6.5MHz

f_m=400Hz

f_d=50kHz/dev

IF Sweep Signal

• FM modulated wave

f₀=6.5MHz

f_m=400Hz

f_d=8kHz/dev

f=6.5MHz

f_m=400Hz

30% modulation

15Y

• CW

f=1.0kHz

200m V_rms

f=6.5MHz

15Y

HA11485BNT--12

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型号：	HA11485BNT
厂家：	HITACHI SEMICONDUCTOR
描述：	Audio/Video Demodulator, PDIP30 光电二极管商用集成电路
文件：	总12页 (文件大小：5777K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

HA11485BNT [HITACHI]

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