3

SL1466

NOTE:

1. Product of input modulation f

chroma and sound subcarriers).

2. Ratio of luminance bar amplitude (100% white), 13.5MHz p-p deviation, to output rms noise in 6MHz

bandwidth with no input modulation.

3. The above characteristics were measured in the Application circuit shown in Fig.10, with an input power of

-50dBm andƒ(RFIN) =480MHz, unless otherwise stated.

Characteristic

Min

Max

Units

Conditions

Supply voltage

-0.3

7

V

RF input voltage

2.5

Vp-p

Storage temperature

-55

125

°C

Junction temperature

150

°C

QP 28 package thermal

93

°C/W

resistant, chip to ambient

QP 28 package thermal

34

°C/W

resistance, chip to case

ESD protection

2

kV

Mil std 883B method 30115 cat 1.

ABSOLUTE MAXIMUM RATINGS

All voltages are referred to V

EE

at 0V

PIN DESCRIPTION

PIN NO

PIN NAME

DESCRIPTION

(Note units are MHz, Amps and Volts)

1

GND

Chip ground

2

DIGFLO

Flag = high when F (local oscillator) < F (IFIN) - F (WINDOW)/2

3

DIGFHI

Flag = high when F (local oscillator) >F (IFIN) + F (WINDOW)/2

4

AFCSET

Connected to V

CC

5

AFCWINDOW

Control input current sink sets width of AFCWINDOW

F =2250 K

o

x I where I is the AFCWINDOW current

F is the window width and K

o

is the VCO gain

6

OSC V

CC

Oscillator V

CC

7

OSC+

External tank

8

OSC-

External tank

9

OSC GND

Oscillator ground

10

VCO GAIN SET

Control voltage input to set VCO GAIN. Connect to V

CC

11

VIDEO DRIVE

Video output (1K

Ω, 1.8V p-p)

12

VIDEO POL SELECT

Control voltage input to set Video polarity. 0 Volts = inverted,

5 Volt = normal

13

NC

14

NC

15

RF AGC CONTROL

Control output current to tuner AGC control port. See Fig. 4.

16

NC

17

IF AGC SET

Connect to V

CC

via 6k8 Ohm resistor

18

AGC TIME CONSTANT

Control input current source. Pulse at carrier frequency F(IFIN) with

mark/space proportional to applied device AGC gain.

Use external R-C to set time constant. 47K, 100nF