Akira LCT-B92TDU22H, LH216S92DT Schematic

INDEX:

LH216S92DT SERVICE MANUAL

PART 1：

PART 2:

PART 3

PART 4:

PART 5:

PART6:

Brief Introduction Of The LH216S92DT

Exploded view

：

IC Introduction

Detailed Circuit

Components List

Debug Instruction

◆

Schematic Diagram Block

◆

Printed Circuit

Part1:

5

4

3

2

1

Schematic Diagram

PANEL

D D

KEY&IR BOARD

J3

KEY&IR CONNECTOR

CON8 J14

5V IR GND K0 R G GND K1 K2 K3 K4 K5 K6 K7

C C

INVERTER BOARD

J4

INVERTER CONNECTOR

12V 12V EN ADJ GND GND

B B

LVDS CONNECTOR

SPV7100

AMPLIFER CONNECTOR

GND R GND L

A A

HDMI PC AV

YUV

5

4

SCART SVHS

PCMCIA

3

USB

2

PC

AUDIO

IN

Earphone

TUNER

1

Printed Circuit

TV Main Board (Top View)

TV Main Board

（Bottom view）

Part3:

IC Introduction

SWITCHING BUCK REGULATOR

OCP2030

 General Description

The OCP2030 is a buck topology of switching regulator for wide operating voltage applications field. The OCP2030
includes a high current P-MOSFET, high precision reference (0.5V) for comparing output voltage with feedback
amplifier, an internal dead-time controller and oscillator for controlling the maximum duty cycle and PWM frequency,
and has power-on programmable soft start time and short circuit PMOS turn-off and auto re-start protection functions.

 Features

z Precision feedback reference voltage: 0.5V (2%)
z Wide supply voltage operating range: 3.6 to 20V

z

Low current consumption: 3mA

z Internal fixed oscillator frequency: Typ. 360KHz
z Programmable Soft-Start function (SS)
z Short Circuit Shutdown and Auto Re-start function(ARSCP)
z Built-in P-MOSFET for 3A loading capability
z Package: SOP8

 Pin Configuration

Top View

1

2

3

4

Block Diagram



8

7

OCP2030

6

5

1

Name No. Status Description

VCC 1 P IC Power Supply (PMOS Source)

SS/SCP 2 I

IN- 3 I Error Amplifier Inverting Input

FB 4 O

GND

LX

5
6
7
8

P

O PMOS High Current Output

Connecting with a Soft-start &

ARSCP timing capacitor

Error Amplifier Compensation

Output

IC Ground

Reference
Regulator

1.25V

Oscillator

Therm al
Shuntdown

3

0.5V

36KΩ

500Ω

Output drive
control circuits

0.8V

4

Soft start&Auto Re-start
S.C.P Circuits

5

6

2

Page 1 - 9

7

Rev. 1.1 May.22, 2007

8

Philips Semiconductors Product data

CBT3257Quad 1-of-2 multiplexer/demultiplexer

FEATURES

• 5 Ω switch connection between two ports

TTL-compatible input levels

•

•

Minimal propagation delay through the switch

•

Latch-up protection exceeds 500 mA per JESD78

•

ESD protection exceeds 2000 V HBM per JESD22-A114,
200 V MM per JESD22-A115 and 1000 V CDM per JESD22-C101

DESCRIPTION

The CBT3257 is a quad 1-of-2 high-speed TTL-compatible
multiplexer/demultiplexer. The low on resistance of the switch allows
inputs to be connected to outputs without adding propagation delay
or generating additional ground bounce noise.

Output Enable (OE
appropriate B1 and B2 outputs for the A-input data.

The CBT3257 is characterized for operation from -40 to +85 °C.

) and select-control (S) inputs select the

PIN CONFIGURATION

1

S

2

1B1

3

1B2

4

1A

5

2B1

6

2B2

7

2A

89

GND

16
15
14
13
12
11
10

SA00533

V

OE
4B1
4B2
4A
3B1
3B2
3A

CC

PIN DESCRIPTION

PIN NUMBER SYMBOL NAME AND FUNCTION

1 S Select-control input

2, 3,
5, 6,

10, 11,

13, 14

4, 7, 9, 12 1A, 2A, 3A, 4A A inputs

8 GND Ground (0 V)
15 OE Output enable
16 V

1B1, 1B2,

2B1, 2B2
3B1, 3B2
4B1, 4B2

CC

B outputs

Positive supply voltage

ORDERING INFORMATION

PACKAGES TEMPERATURE RANGE ORDER CODE TOPSIDE MARK DWG NUMBER

16-pin plastic SO -40 to 85 °C CBT3257D CBT3257D SOT109-1
16-pin plastic SSOP -40 to 85 °C CBT3257DB CT3257 SOT338-1
16-pin plastic SSOP (QSOP) -40 to 85 °C CBT3257DS CBT3257 SOT519-1
16-pin plastic TSSOP -40 to 85 °C CBT3257PW CBT3257 SOT403-1

Standard packing quantities and other packaging data is available at www.philipslogic.com/packaging.

PRODUCT SUMMARY

V

b

b

VDS (V) r

-20

0.100 @ V

0.150 @ V

P-Channel 2.5-V (G-S) MOSFET

(W) ID (A)

DS(on)

= -4.5 V -2.4

GS

= -2.5 V -2.0

GS

G

1

S

2

b

TO-236

(SOT-23)

D

3

Ordering Information: Si2301BDS-T1

Si2301BDS

Vishay Siliconix

Top View

Si2301 BDS (L1)*

*Marking Code

ABSOLUTE MAXIMUM RATINGS (TA = 25_C UNLESS OTHERWISE NOTED)

Parameter Symbol 5 sec Steady State Unit

Drain-Source Voltage V

Gate-Source Voltage V

Continuous Drain Current (TJ = 150_C)

Pulsed Drain Current

Continuous Source Current (Diode Conduction)

Power Dissipation

Operating Junction and Storage Temperature Range TJ, T

a

_

b

TA= 25_C

TA= 70_C

TA= 25_C

TA= 70_C

DS

GS

I

D

I

DM

I

S

P

D

stg

-2.4 -2.2

-1.9 -1.8

-0.72 -0.6

0.9 0.7

0.57 0.45

-55 to 150 _C

THERMAL RESISTANCE RATINGS

-20

"8

-10

A

W

Parameter Symbol Typical Maximum Unit

Maximum Junction-to-Ambient

Maximum Junction-to-Ambient

Notes
a. Pulse width limited by maximum junction temperature.
b. Surface Mounted on FR4 Board, t v 5 sec.
c. Surface Mounted on FR4 Board.

b

R

c

thJA

120 145

140 175

_C/W

5A Low Dropout Positive Adjustable or Fixed-Mode Regulator

 Features

1.4V maximum dropout at full load current

•

•

Built-in thermal shutdown

•

Output current limiting

•

Adjustable output voltage or fixed 1.5V, 1.8V, 2.5V,

3.3V, 5.0V

•

Fast transient response
Good noise rejection

•

Package : TO252, TO263, TO220

•

 General Description

AP1084 is a low dropout positive adjustable or fixed­mode regulator with minimum of 5.0A output current
capability. The product is specifically designed to
provide well-regulated supply for low voltage IC
applications such as high-speed bus termination and
low current 3.3V logic supply. AP1084 is also well
suited for other applications such as VGA cards.
AP1084 is guaranteed to have lower than 1.4V
dropout at full load current making it ideal to provide
well-regulated outputs of 1.25 to 3.3V with 4.7 to
12V input supply.

 Ordering Information

AP1084 X X X X

AP1084

Low Dropout Regulator Package Vout

 Typical Circuit

5.0V to 3.3V Fixed Mode Regulator

5V

Tab is Vout

Vin

Vout

GND

C1
100uF

D : TO252-3L
K : TO263-3L
T : TO220-3L

3.3V/5A

C2

100uF

Blank : Adj
15 = 1.5V
18 = 1.8V
25 = 2.5V
33 = 3.3V
50 = 5.0V

Lead Free

Blank : Normal

L : Lead Free Package

Adjustable Regulator

5V

Vin

Vout

Adj

Tab is Vout

C1

100uF

Note:

Packing

Blank : Tube
A : Taping

2.5V/5A

Ω

121

121

(1VV +∗=

C2
100uF

Ω

R

2

)

R

1

R1

R2

REFo

1A Low Dropout Positive Adjustable or Fixed-Mode Regulator

Features



- 1.4V maximum dropout at full load current

- Fast transient response

- Output current limiting

- Built-in thermal shutdown

- Packages: SOT223, TO263, TO252, TO220,
SOT89

- Good noise rejection

- 3-Terminal Adjustable or Fixed 1.5V, 1.8V, 1.9V,

2.5V, 3.3V, 5.0V

Applications



- PC peripheral

- Communication

General Description



AP1117 is a low dropout positive adjustable or
fixed-mode regulator with minimum of 1A output
current capability. The product is specifically
designed to provide well-regulated supply for low
voltage IC applications such as high-speed bus
termination and low current 3.3V logic supply.
AP1117 is also well suited for other applications
such as VGA cards. AP1117 is guaranteed to have
lower than 1.4V dropout at full load current making
it ideal to provide well-regulated outputs of 1.25 to

5.0 with 6.4V to 12V input supply.

Ordering Information



AP 1117 X XX X X

AP1117

Low Dropout Regulator

Typical Circuit



5V

Tab is Vout

( 5V/3.3V fixed output )

Vin

Vout

GND

C1
100uF

Package Vout

E : SOT223-3L
K : TO263-3L
D : TO252-3L
T : TO220-3L
Y : SOT89-3L

C2

100uF

Blank : ADJ
15 : 1.5V
18 : 1.8V
19: 1.9V
25 : 2.5V
33 : 3.3V
50 : 5.0V

3.3V/1A

Lead Free

Blank : Normal

L : Lead Free Package

5V

Vout

Tab is Vout

C1

100uF

Vin

Adj

( 5V/2.5V ADJ output )

Note:

(1 VV +∗=

REFo

Blank : Tube

A : Taping

R1

121

Ω

R2

Ω

121

R

2

)

R

1

Packing

V

o

2.5V/1A

C2

100uF

AP9435M

Advanced Power
Electronics Corp.

▼

▼ Simple Drive Requirement

▼ ▼

▼

▼ Low On-resistance

▼ ▼

▼

▼ Fast Switching

▼ ▼

D

D

D

SO-8

D

P-CHANNEL ENHANCEMENT MODE
POWER MOSFET

G

S

S

S

Description

The Advanced Power MOSFETs from APEC provide the
designer with the best combination of fast switching,
ruggedized device design, low on-resistance and cost-effectiveness.

The SO-8 package is universally preferred for all commercial-industrial
surface mount applications and suited for low voltage applications
such as DC/DC converters.

BV
R

DS(ON)

I

D

G

DSS

-30V

50mΩ

-5.3A

D

S

Absolute Maximum Ratings

Symbol Units

V

DS

V

GS

=25℃ A

I

D@TA

I

=70℃ A

D@TA

I

DM

PD@TA=25℃ W

Drain-Source Voltage
Gate-Source Voltage
Continuous Drain Current

Continuous Drain Current
Pulsed Drain Current
Total Power Dissipation 2.5
Linear Derating Factor 0.02

T

STG

T

J

Storage Temperature Range
Operating Junction Temperature Range -55 to 150

Parameter

3

3

1

Rating

-30

± 20

-5.3

-4.7

-20

-55 to 150

V
V

A

W/℃

℃

℃

Thermal Data

Symbol Value Unit

Rthj-amb Thermal Resistance Junction-ambient

Parameter

3

Max. 50 ℃/W

2N7000 / 2N7002 / NDS7002A
N-Channel Enhancement Mode Field Effect Transistor

General Description Features

November 1995

These N-Channel enhancement mode field effect transistors
are produced using Fairchild's proprietary, high cell density,
DMOS technology. These products have been designed to
minimize on-state resistance while provide rugged, reliable,
and fast switching performance. They can be used in most
applications requiring up to 400mA DC and can deliver

High density cell design for low R
Voltage controlled small signal switch.
Rugged and reliable.
High saturation current capability.

DS(ON)

.

pulsed currents up to 2A. These products are particularly
suited for low voltage, low current applications such as small
servo motor control, power MOSFET gate drivers, and other
switching applications.

___________________________________________________________________________________________

D

S

Units

V

G

S

TO-92

2N7000

D

Absolute Maximum Ratings

Symbol Parameter

V

DSS

V

DGR

V

GSS

I

D

P

D

T

J,TSTG

T

L

THERMAL CHARACTERISTICS

R

JA

θ

Drain-Source Voltage 60 V

Drain-Gate Voltage (RGS < 1 MΩ)

Gate-Source Voltage - Continuous

- Non Repetitive (tp < 50µs)
Maximum Drain Current - Continuous 200 115 280 mA

Maximum Power Dissipation 400 200 300 mW
Derated above 25oC 3.2 1.6 2.4 mW/°C

Operating and Storage Temperature Range -55 to 150 -65 to 150 °C
Maximum Lead Temperature for Soldering

Purposes, 1/16" from Case for 10 Seconds

Thermal Resistance, Junction-to-Ambient 312.5 625 417 °C/W

G

(TO-236AB)

2N7002/NDS7002A

TA = 25°C unless otherwise noted

2N7000 2N7002 NDS7002A

60 V

20

±

40

±

- Pulsed 500 800 1500

300 °C

Philips Semiconductors Product specification

2 × 6 W stereo power amplifier TDA1517; TDA1517P

FEATURES

• Requires very few external components

• High output power

• Fixed gain

• Good ripple rejection

GENERAL DESCRIPTION

The TDA1517 is an integrated class-B dual output
amplifier in a plastic single in-line medium power package
with fin (SIL9MPF) and a plastic heat-dissipating dual
in-line package (HDIP18). The device is primarily
developed for multi-media applications.

• Mute/standby switch

• AC and DC short-circuit safe to ground and V

P

• Thermally protected

• Reverse polarity safe

• Capability to handle high energy on outputs (VP=0V)

• No switch-on/switch-off plop

• Electrostatic discharge protection.

QUICK REFERENCE DATA

SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT

V

P

I

ORM

I

q(tot)

I

sb

I

sw

|Z

| input impedance 50 −−kΩ

I

P

o

supply voltage 6.0 14.4 18.0 V
repetitive peak output current −−2.5 A
total quiescent current − 40 80 mA
standby current − 0.1 100 µA
switch-on current −−40 µA

output power RL=4Ω; THD = 0.5% − 5 − W

R

=4Ω; THD = 10% − 6 − W

L

SVRR supply voltage ripple rejection fi= 100 Hz to 10 kHz 48 −−dB

α

cs

G

v

V

no(rms)

T

c

channel separation 40 −−dB
closed loop voltage gain 19 20 21 dB
noise output voltage (RMS value) − 50 −µV
crystal temperature −−150 °C

ORDERING INFORMATION

TYPE

NUMBER

NAME DESCRIPTION VERSION

PACKAGE

TDA1517 SIL9MPF plastic single in-line medium power package with fin; 9 leads SOT110-1
TDA1517P HDIP18 plastic heat-dissipating dual in-line package; 18 leads SOT398-1

Philips Semiconductors Product specification

2 × 6 W stereo power amplifier TDA1517; TDA1517P

PINNING

SYMBOL PIN DESCRIPTION

−INV1 1 non-inverting input 1
SGND 2 signal ground
SVRR 3 supply voltage ripple rejection output
OUT1 4 output 1
PGND 5 power ground
OUT2 6 output 2
V

P

M/SS 8 mute/standby switch input

−INV2 9 non-inverting input 2

7 supply voltage

dbook, halfpage

INV1

SGND

SVRR

OUT1

PGND

OUT2

V

M/SS

INV2

1

2
3
4

TDA1517

5
6
7

P

8
9

MLC352

Fig.2 Pin configuration for SOT110-1.

FUNCTIONAL DESCRIPTION

The TDA1517 contains two identical amplifiers with
differential input stages. The gain of each amplifier isfixed
at 20 dB. A special feature of the device is the
mute/standby switch which has the following features:

• Low standby current (<100 µA)

• Low mute/standby switching current

• Mute condition.

(low cost supply switch)

dbook, halfpage

Pins 10 to 18 should be connected to GND or floating.

INV1

SGND

SVRR

OUT1

PGND

OUT2

V

M/SS

INV2

1

2
3
4

TDA1517P

5

6

7

P

8

9

18
17
16
15
14
13
12
11
10

MLC353

Fig.3 Pin configuration for SOT398-1.

Fremont Micro Devices, Inc.

FEATURES

Low voltage and low power operati ons:



• FT24C02/04/08/16: V

• FT24C02A/04A/08A/16A: VCC = 1.8V to 5.5V



Maximum Standby current < 1µA (typically 0.02µA and 0.06µA @ 1.8V and 5.5V respectively).
16 bytes page write mode.


 Partial page write operation allowed.


Internally organized: 256 × 8 (2K), 512 × 8 (4K), 1024 × 8 (8K), 2048 × 8 (16K).



Standard 2-wire bi-directional serial interface.



Schmitt trigger, filtered inputs for noise protection.



Self-timed programming cycle (5ms maximum).
Automatic erase before write operation.




Write protect pin for hardware data protection.



High reliability: typically 800,000 cycles endurance.
100 years data retention.



Industrial temperature range (-40o C to 85o C).



Standard 8-pin PDIP/SOIC/TSSOP Pb-free packages.



CC

FT24C02 / 04 / 08 / 16

FT24C02A / 04A / 08A / 16A

= 2.5V to 5.5V

and

DESCRIPTION

The FT24C02/04/08/16 series are 2048/4096/8192/16384 bits of serial Electrical Erasable and
Programmable Read Only Memory, commonly known as EEPROM. They are organized as
256/512/1024/2048 words of 8 bits (1 byte) each. The devices are fabricated with proprietary
advanced CMOS process for low power and low voltage applications. These devices are available in
standard 8-lead PDIP, 8-lead JEDEC SOIC and 8-lead TSSOP packages. A standard 2-wire serial
interface is used to address all read and write functions. Our extended V
devices enables wide spectrum of applications.

range (1.8V to 5.5V)

CC

PIN CONFIGURATION

Pin Name Pin Function

A2, A1, A0 Device Address Inputs

SDA Serial Data Input / Open Drain Output
SCL Serial Clock Input

WP Write Protect

NC No-Connect

All three packaging types come in conventional or Pb-free certified.

HY5DU281622FT(P) Series

DESCRIPTION

The HY5DU281622FT(P) is a 134,217,728-bit CMOS Double Data R ate (D DR) Synchronous DRAM, ideally suited for the
main memory applications which requires large memory density and high bandwidth.

This Hynix 128Mb DDR SDRAMs offer fully synchronous operations referenced to both rising and falling edges of the
clock. While all addresses and control inputs are latched on the rising edges of the CK (fal ling edges of the /CK), Data,
Data strobes and Write data masks inputs are sampled on both rising and falling edges of it. The data paths are inter­nally pipelined and 2-bit prefetched to achieve very high ban dwid th. All inp ut a nd output voltage levels are compatible
with SSTL_2.

FEATURES

•VDD, V

DDQ

= 2.3V

min

~ 2.7V

max

(Typical 2.5V Operation +/- 0.2V for DDR266, 333)

•VDD, V

DDQ

= 2.4V

min

~ 2.7V

max

(Typical 2.6V Operation +0.1/- 0.2V for DDR400
and 400Mbps/pin product)

• All inputs and outputs are compatible with SSTL_2
interface

• Fully differential clock inputs (CK, /CK) operation

• Double data rate interface

• Source synchronous - data transaction aligned to
bidirectional data strobe (DQS)

• x16 device has two bytewide data strobes (UDQS,
LDQS) per each x8 I/O

• Data outputs on DQS edges when read (edged DQ)
Data inputs on DQS centers when write (centered
DQ)

• On chip DLL align DQ and DQS transition with CK
transition

• DM mask write data-in at the both rising and falling
edges of the data strobe

• All addresses and control inputs except data, data
strobes and data masks latched on the rising edges
of the clock

• Programmable CAS latency 2/2.5 (DDR266, 333)
and 3 (DDR400 and 400Mbps/pin product) sup­ported

• Programmable burst length 2/4/8 with both sequen­tial and interleave mode

• Internal four bank operations with single pulsed
/RAS

• Auto refresh and self refresh supported

lock out function supported

RAS

•t

• 4096 refresh cycles/64ms

• JEDEC standard 400mil 66pin TSOP-II with 0.65mm
pin pitch

• Lead free (*ROHS Compliant)

ORDERING INFORMATION

Part No. Configuration Package

400mil

HY5DU281622F(L)TP-X* 8Mx16

* X means speed grade
** Lead-free product

*ROHS (Restriction Of Hazardous Substances)

Rev. 0.03 /Jun. 2006 3

66pin

TSOP-II**

OPERATING FREQUENCY

Grade Clock Rate Remark

-5 200MHz@CL3

-D43 200MHz@CL3 DDR400B (3-3-3)

-D4 200MHz@CL3 DDR400 (3-4-4)

- J 133MHz@CL2

- K 133MHz@CL2 133MHz@CL2.5 DDR266A (2-3-3)

- H 100MHz@CL2 133MHz@CL2.5 DDR266B (2.5-3-3)

166MHz @CL2.5

& @CL3

400Mbps/pin (maxi-

mum Date rate)

DDR333 (2.5-3-3)

DDR333 (3-3-3)

PIN CONFIGURATION

HY5DU281622FT(P) Series

V

DD

DQ0

V

DDQ

DQ1
DQ2

V

SSQ

DQ3
DQ4

V

DDQ

DQ5
DQ6

V

SSQ

DQ7

NC

V

DDQ

LDQ S

NC

V

DD

NC

LDM

/W E
/CAS
/RA S

/CS

NC
BA0
BA1

A10/AP

A0

A1

A2

A3

DD

V

10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33

1
2
3
4
5
6
7
8
9

400mil x 875m il

66pin TSOP-II

0.65mm pin pitch

66
65
64
63
62
61
60
59
58
57
56
55
54
53
52
51
50
49
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34

V

SS

DQ15
V

SSQ

DQ14
DQ13
V

DDQ

DQ12
DQ11
V

SSQ

DQ10
DQ9
V

DDQ

DQ8
NC
V

SSQ

UDQS
NC
VREF
V

SS

UDM
/CK
CK
CKE
NC
NC
A11
A9
A8
A7
A6
A5
A4

SS

V

ROW AND COLUMN ADDRESS INFORMATION

• Organization : 2M x 16 x 4banks

• Row Address : A0 - A11

• Column Address : A0 - A8

• Bank Address : BA0, BA1

• Auto Precharge Flag : A10

• Refresh : 4K

Rev. 0.03 /Jun. 2006 4

SHENZHEN TENA

ELECTRONICS CO., LTD.

PRODUCT

SPECIFICATION

MODEL

TNDT1A1200F

DESCRIPTION

DVB-T

PAGE

1

TNDT1A1200F

TNDT1A2200F

FOR DIGITAL TERRESTRIAL RECEPTION

A Original Release

REV DESCRIPTION DATE SIGN

CUSTOMER APPROVAL

DESCRIPTION

EUROPEAN DIGITAL

TERRESTRIAL STANDARD

DRAWING NO
REVISIONS

1.0

PAGES TOTAL

17

APPROVAL CHECK DESIGN

DATE DATE DATE

2008-10-16

SHENZHEN TENA

ELECTRONICS CO., LTD.

PRODUCT

SPECIFICATION

MODEL

TNDT1A1200F

DESCRIPTION

DVB-T

PAGE

2

NO SPECIFICATION

1

FEATURES

1. +5V supply voltage only; no external tuning voltage required.

2. Tuners for horizontal and vertical mounting available.

3. Option with DC-power output through input connector (e. g. indoor antenna supply)

4. Tuners comply with relevant CENELEC standards with regard to requirements concerning signal
handling capability and immunity

5. Superior low noise and high sensitivity performance

6. RF-in to RF-out loopthrough amplifiers

7. low noise and excellent linearity

8. VHF high to UHF frequency range coverage

9. Standard connectors for in-and output e. g. IEC, F-connector. RCA

10. full UHF /VHF-H frequency coverage

11. Pattem generator included

2

12. I

C programmable

13. 400KHz Bus compliant

14. Stand-by mode addressable

15. High performance and cost effective single conversion tuner

2

16. I

C programmable

17. 400KHz Bus compliant

18. Fast PLL tuning speed (programmable step size e.g.62.5KHz and 166.67KHz)

19. Flat overall frequency response

20. High PLL loop bandwidth which ensures very low oscillator phase noise

21. SAW-filter and IF-amplifier included

a) Switchable 7/8 MHz SAW filter (full band tuners)
b) Fixed 8 MHz SAW filter (UHF only tuners)
c) IF-amplification controllable over a wide range

22. Differential, filtered (SAW)‘digital’ IF-output to directly drive the channel decoder