ISL59452 Datasheet, PDF (12/15 Pages) Intersil Corporation – Triple 4:1 Single Supply Video Multiplexing Amplifier

ISL59452
Pin Descriptions
ISL59452
(32 LD QFN)
PIN NAME
1
R1
2
B1
3
G1
4, 6, 10, 16, 17, 22,
23, 27, 32
GND
5, 19, 20, 28
V+
7
R2
8
B2
9
G2
11
R3
12
B3
13
G3
14
S1
15
S0
18
GOUT
21
BOUT
24
ROUT
25
AV2
26
HIZ
29
R0
30
B0
31
G0
PAD
EP
IN
EQUIVALENT
CIRCUIT
Circuit 1
Circuit 1
Circuit 1
Circuit 4
Channel 1 Red/Pr/Chroma Input
Channel 1 Blue/Pb/Chroma Input
Channel 1 Green/Luma Input
Ground
DESCRIPTION
Circuit 4
Circuit 1
Circuit 1
Circuit 1
Circuit 1
Circuit 1
Circuit 1
Circuit 2
Circuit 2
Circuit 3
Circuit 3
Circuit 3
Circuit 2
Circuit 2
Circuit 1
Circuit 1
Circuit 1
Positive Supply. Bypass to GND with 0.01µF and 1nF capacitors.
Channel 2 Red/Pr/Chroma Input
Channel 2 Blue/Pb/Chroma Input
Channel 2 Green/Luma Input
Channel 3 Red/Pr/Chroma Input
Channel 3 Blue/Pb/Chroma Input
Channel 3 Green/Luma Input
Channel selection pin MSB (binary logic code). This pin does not have internal pull-up or
pull-down resistors
Channel selection pin LSB (binary logic code). This pin does not have internal pull-up or
pull-down resistors
Green/Luma Output
Blue/Pb/Chroma Output
Red/Pr/Chroma Output
Gain Set. Set to logic high for gain of x2 (+6dB), or set to logic low for a gain of x1 (0dB). If
left floating, an internal pull-down resitor pulls this pin low (300k pull-down).
Output disable (active high). Internal pull-down resistor ensures the device will be active with
no connection to this pin. A logic high, puts the outputs in a high impedance state. Use this
state to control logic when more than one MUX-amp share the same video output line.
During high impedance state, there is a 2kΩ pull-down present at each output. If left floating,
an internal pull-down resistor pulls this pin low (300k pull-down).
Channel 0 Red/Pr/Chroma Input
Channel 0 Blue/Pb/Chroma Input
Channel 0 Green/Luma Input
Exposed Pad. Connect to GND
V+
V+
*
V+
LOGIC PIN
*
OUT
CIRCUIT 1
GND
CIRCUIT 2
*NOT ALWAYS PRESENT.
REFER TO PIN DESCRIPTION
GND
GND
CIRCUIT 3
V+
GND
CAPACITIVELY
COUPLED
ESD CLAMP
CIRCUIT 4
THERMAL HEAT SINK PAD
GND
~1MΩ
SUBSTRATE
12
FN6254.0
September 24, 2007