HA11560T [HITACHI]

VCR/VDP RF Modulator; VCR / VDP RF调制器


型号：	HA11560T
厂家：	HITACHI SEMICONDUCTOR
描述：	VCR/VDP RF Modulator VCR / VDP RF调制器录像机
文件：	总10页 (文件大小：63K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

ADE-207-126A (Z)

HA11560FP/T

VCR/VDP RF Modulator

Rev. 1

Dec. 1993

This chip is designed for application as an RF

Features

modulator in VCRs and VDPs. A new type RF

oscillator provides superior harmonic

characteristics.

• Superior harmonic characteristics allow easy

pattern design.

• Sharp white chip characteristics with no

distortion

Functions

• The use of miniature surface mount packaging

allows substrate miniaturization (TSOP).

• Video modulator

• RF carrier oscillator

• White clip

Ordering Information

• Channel switch

• Audio carrier converter

• ANT switch driver

• Carrier off switch

Type No.

Package

HA11560FP

HA11560T

16 pin plastic SOP

16pin plastic TSOP

HA11560FP/T

Block Diagram

ANT

V_CC

Video in

SAW resonator

Note 1

VR₁

330

C10

1 µ

1500 p

10 k

ANT

Video

clamp

Carrier off SW

RF carrier oscillator

RF amp

White clip

HA11560

Channel SW

Video modulator

RF out

BPF

Audio amp

Audio carrier

modulator

FM modulator

0.22 µ

V_CC

330

10 p

GND

15 p

Note 2

10 µ 0.01 µ

Channel SW

Audio in

External Components (Notes 1 and 2)

No. Component

Model

Manufacturer

Remarks

SAW

KAR91CS

Kyocera, Inc.

KAR61CT

resonator

(Japanese specifications)

(U. S. specifications)

4.5-MHz

tank coil

291ACS–4060Z

62-pF tuning capacitor on-chip

369SN–1458Z

Toko, Inc.

Use 369SN–1458Z for

greater tuning capacitance.

Note this also decreases

audio modulation factor.

External tuning capacitor

HA11560FP/T

Pin Functions

No.

Voltage

Symbol

Function

Remarks

GND

3.2 V

AUDIO

Audio RF signal output pin

Output Level =

85 dBµV

RF OUT

RF oscillator voltage control pin

(3.1 V)

RF oscillator active

state

OSCILLATOR

BIAS

MOD COIL

FM modulator tank coil connector pin

Audio signal input pin

4.1 V

0 V

Reference voltage

MOD COIL

Swing Level =

1.0 Vp-p

AUDIO IN

CHANNEL

RF oscillation frequency channel

switch

2.8 V

(when open)

Pin 9 output

(when open)

V_CC

SAW.R LOW

CHANNEL

SAW resonator connector pin (low ch)

3.7 V

Swing Level =

80 mVp-p

SAW.R HIGH

CHANNEL

SAW resonator connector pin (high ch)

3.7 V

SAW.R

COMMON

SAW resonator connector pin (common) 3.2 V

DP Adj.

Video differential phase and harmonic

level adjust pin

2.6 V

Good oscillating

stability smaller

capacitance value

CARRIER

OFF SW

RF switch driver and RF oscillator

switch pin

0 to 5 V

0 to 3.6 V

3.1 V

0 V (when open)

ANT SW

DRIVER

RF switch driver drive pin

Video RF signal output pin

Video signal input pin

Maximum output

current = 30 mA

VIDEO

RF OUT

Note: Output level

= 91.5 dBµV

VIDEO IN

1.6 V

Note:

Channel

Carrier frequency

91.25 MHz

JPN1

JPN2

US3

97.25 MHz

61.25 MHz

US4

67.25 MHz

HA11560FP/T

Block Operation Descriptions

The following describes the operation of each

block and external circuits.

White Clip Circuit

The white clip level is set to 92.5%. A circuit that

produces a sharp white clip is used in order to

produce high linearity characteristics for the video.

Increasing the white clip frequency characteristic

by another 5 MHz eliminates video carrier cutoff

by the chroma signal and prevents deterioration of

audio buzz characteristics.

Video Clamp

The video clamp circuit employs a sync peak value

clamp. Input impedance is at a level of

approximately 30 kΩ to reduce compression of the

sync pulse. Note that sag is generated in the sync

pulse when a capacitor of 0.47 µF or lower is used

for C10 at pin 16.

White clip level

HA11560

white clip

Video in

characteristics

Normal

white clip

characteristics

White clip

circuit

C10

1 µF

Figure 1 Video Input Circuit

Figure 2 White Clip Characteristics

HA11560FP/T

RF Oscillator/Channel Switch

A new type RF oscillator is employed to reduce RF

harmonics to a level that is dramatically lower than

previous available Hitachi products.

RF oscillator on/off operation.

Opening the switch at pin 13 stops oscillation of

the RF oscillator and the antenna switch drive

output at pin 14 becomes 0 V. The audio system is

operating in this state, which acts to suppress

generation of popping noise in the audio as the

antenna switches between on and off.

Note that using a capacitor lower than 0.22 µF at

pin 3 causes an increase in sync pulse sag.

The input resistance at pin 11, which is the

oscillator input pin, is 3 kΩ. Pins 9 and 10 are

oscillator output pins, and are NPN transistor

emitter-follower types.

When pin 13 is connected to V

by a closed

switch, the RF oscillator is operational and the

antenna switch drive output DC level at pin 14 is

high.

The oscillator frequency is selectable by switching

the pin 7 channel switch between SAW resonator

low channel and high channel. When the channel

switch is open, oscillation output is performed

from pin 9, while grounding the switch causes

output from pin 10. The switching voltage of the

channel switch is approximately 2.1 V. When the

channel switch is grounded, a current of 30 µA

flows through pin 7, which is sufficient to drive an

electronic switch.

Pin 13 should be connected to V

when the

antenna switch is not used. A maximum current of

30 mA can be obtained from the antenna switch

driver.

Be sure to connect 10 kΩ for R3 at pin 13 when

the antenna switch is being used. R2 is used as

protective resistance when the antenna switch

power supply is switched on before the chip power

supply.

Antenna Switch

The antenna switch links the drive circuit that

switches the RF switch on and off with the chip’s

R2 10 k

RF switch

SAW resonator

3 k

V_CC

80 k

RF oscillator

60 k

0.22 µ

Antenna switch

driver

RF oscillator

Channel

switch

Figure 4 Antenna Switch Interface Circuit

Figure 3 RF Oscillator Interface Circuit

HA11560FP/T

Audio Modulator

Pins 4 and 5 make up the reference oscillator for

the 4.5 MHz audio modulator. Pin 4 is the

oscillator’s reference bias source. A 15 pF

capacitor must be used for C3 at pin 4 to cut the ac

signal. The oscillation frequency is determined by

an external tank circuit.

An external cuppling capacitor is not required

when pin 6, which is the audio input pin, is almost

equal to ground potential and the audio input

signal dc level is ground potential. The ground

potential of the input pin results in a circuit

configuration that reduces pin 6 voltage

fluctuations and suppresses popping noise.

V_CC

200

2 k

Audio oscillator

Audio amplifier

100

100 k

330

Audio input

15 p

Figure 5 Audio Modulator Interface Circuit

HA11560FP/T

Absolute Maximum Ratings (Ta = 25°C)

Item

Symbol

Rating

Unit

Supply voltage

Power dissipation

V_CC

6.0

P_T

400 (HA11560FP)

275 (HA11560T)

–55 to +125

–20 to +70

Storage temperature

Operating temperature

Tstg

Topr

°C

Electrical Characteristics (Ta = 25°C)

Application

Terminal

Item

Symbol Min Typ

Max

Unit Test Conditions

Supply current

Video output level

I_SS

V_O

V_M

89.5 91.5 94.5

dBµ

No input

Video modulation

factor

–2

—

Video input = 0.635 Vp-p

Video output

channel difference

∆V_O

∆V_M

Video modulation

factor channel

difference

–2

Video output S/N

White clip level

Differential gain

V_SN

V_W

—

VM = 50%

92.5 96

80% modulation at upper

part of chroma signal

20 IRE

Differential phase

A_O

—

deg

Audio output P/S

ratio

5.0

6.5

8.0

2, 15

Audio modulation

factor

A_M

22.4 24.4 26.4

± kHz/ Input 0.14 Vp-p

dev

Audio S/N

ASN

R_V

—

Audio modulation = 60 %

Video input

impedance

kΩ

Audio input

impedance

R_A

—

100

–75

145

–65

kΩ

Spurious response Sin

within band

Measurement of spurious

response between f_Vand f_A

2, 15

920-kHz beat

—

–68

3.4

–61

3.7

0.635 Vp-pinput

Antenna switch pin A_SV

voltage

3.1

Load current = 15 mA when 14

supply voltage = 5 V

HA11560FP/T

Electrical Characteristics (Ta = 25°C) (cont)

Application

Terminal

Item

Symbol Min Typ

Max

Unit Test Conditions

Antenna switch

residual voltage

A_SRV

C_OFF

C_ON

0.1

When supply voltage = 5 V

Carrier-off switch

carrier off voltage

—

0.5

5.0

Carrier-off switch

carrier on voltage

2.5

Package Dimensions

Unit : mm

10.06

• HA11560FP

10.5 Max

0.8 Max

+ 0.2

– 0.3

7.8

0 – 10 °

0.7 ± 0.2

1.27 ± 0.15

0.40

+ 0.10

– 0.05

7.62 (300 mil) Type

0.10

0.12

Hitachi Code FP-16DA

EIAJ

SC-530-16C

JEDEC

HA11560FP/T

• HA11560T

5.00

5.4 Max

0.65

0.20 ± 0.10

0.13 M

6.40 ± 0.20

0 – 10°

0.10

Hitachi Code TTP-16DA

EIAJ

JEDEC

0.50 ± 0.10

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