ISL59311IRZ Intersil, ISL59311IRZ Datasheet - Page 12

• Manufacturer Part Number: ISL59311IRZ
• Description: IC VIDEO AMP TRI DIFF 32-QFN
• Manufacturer: Intersil

Specifications of ISL59311IRZ

• Applications: Differential
• Output Type: Differential
• Number Of Circuits: 3
• -3db Bandwidth: 650MHz
• Slew Rate: 1500 V/µs
• Current - Supply: 7mA
• Current - Output / Channel: 60mA
• Voltage - Supply, Single/dual (±): 4.5 V ~ 5.5 V
• Mounting Type: Surface Mount
• Package / Case: 32-VQFN Exposed Pad, 32-HVQFN, 32-SQFN, 32-DHVQFN
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Digital Transceiver Block Diagram
TXDATA
(S
TRANSMIT
DATA
RDATA
(S
DATA
12
11
)
)
TRANSMIT
S
ISL59311
DATA
ENCODING
D
TXEN
R
19
V
GND
+5V
12
CCS
S
7
S
OUT
S
OUT
S
FIGURE 21. RS-485 SERIAL INTERFACE CONNECTION DIAGRAM
IN
IN
+
+
-
-
17
13
15
16
S
S
+
S
S
OUT
OUT
0.1μF
IN
IN
R
-
+
+
-
T
R1
R3
ISL59311
Proper Layout Technique
A critical concern with any PCB layout is the establishment
of a “healthy” ground plane. It is imperative to provide
ground planes terminated close to inputs to minimize input
capacitance. Additionally, the ground plane can be
selectively removed from inputs to prevent load and supply
currents from flowing near the input nodes.
In general the following guidelines apply to all PCB layout:
• Keep all traces as short as possible.
• Keep power supply bypass components as close to the
• Create a healthy ground with low impedance and
• In high frequency applications on multi-level boards try to
• Provide extremely short loops from power pin to ground.
• If it is affordable, a ferrite bead is always of benefit to
chip as possible - extremely close.
continuous ground pathways available to all grounded
components board-wide.
keep one level of board with continuous ground plane and
minimum via cutouts - providing it is affordable.
isolate device from Power Supply noise and the rest of the
circuit from the noise of the device.
R
0.1μF
T
+
7
6
B/Z
A/Y
GND
V
+5V
CC
5
8
ISL83088
R
D
RO
DE
RE
DI
4
3
2
1
April 25, 2007
FN6372.3