SN761678B datasheet(3/21 Pages) TI1

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Terminal Functions

S0159-01

150kW

50kW

S0133-03

SN761678B

TV TUNER IC

SLES185 – JUNE 2006

TERMINAL

DESCRIPTION

SCHEMATIC

NAME

NO.

ADC

ADC input

Figure 1

Address selection input

Figure 2

BS1

Band-switch 1 output (NPN emitter follower)

Figure 4

BS2

Band-switch 2 output (NPN emitter follower)

Figure 4

BS3

Band-switch 3 output (NPN emitter follower)

Figure 4

BS4

Band-switch 4 output (NPN emitter follower)

Figure 4

Charge-pump output

Figure 5

IF GND

IF ground

IF IN1

IF amplifier input 1

Figure 3

IF IN2

IF amplifier input 2

Figure 3

IF OUT

IF output

Figure 6

MIX OUT1

Mixer output 1

Figure 7

MIX OUT2

Mixer output 2

Figure 7

OSC GND

Oscillator ground

RF GND

RF ground

SCL

Serial clock input

Figure 8

SDA

Serial data input/output

Figure 9

UHF OSC B1

UHF oscillator base 1

Figure 10

UHF OSC B2

UHF oscillator base 2

Figure 10

UHF OSC C1

UHF oscillator collector 1

Figure 10

UHF OSC C2

UHF oscillator collector 2

Figure 10

UHF RF IN

UHF RF input

Figure 11

VCC

Supply voltage for mixer/oscillator/PLL: 5 V

VHF RF IN

VHF RF input

Figure 12

VHI OSC B

VHF HIGH oscillator base

Figure 13

VHI OSC C

VHF HIGH oscillator collector

Figure 13

VLO OSC B

VHF LOW oscillator base

Figure 14

VLO OSC C

VHF LOW oscillator collector

Figure 14

VTU

Tuning voltage amplifier output

Figure 15

XTAL

4-MHz crystal oscillator input

Figure 16

Figure 1.

Figure 2.

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