ICS95V847 Datasheet, PDF (2/9 Pages) Integrated Circuit Systems – 2.5V Wide Range Frequency Clock Driver (45MHz - 233MHz)

ICS95V8 47
Pin Descriptions
PIN NUMBER
PIN NAME
5, 12, 20
VDD
1, 4, 13
GND
8
AVDD
9
AGND
3, 11, 15, 21, 24 CLKT[0:4]
2, 10, 14, 22, 23 CLKC[0:4]
6
CLK_INT
7
CLK_INC
16
FB_OUTT
17
FB_OUTC
19
FB_INT
18
FB_INC
TYPE
DESCRIPTION
PWR Power supply, 2.5V
PWR Ground
PWR
PWR
OUT
Analog power supply, 2.5V
Analog ground
"True" Clock of differential pair outputs
OUT "Complementary" clocks of differential pair outputs
IN "True" reference clock input
IN
OUT
OUT
IN
IN
"Complementary" reference clock input
"True" " Feedback output, dedicated for external feedback. It switches
at the same frequency as the CLK. This output must be wired to
FB_INT
"Complementary" Feedback output, dedicated for external feedback. It
switches at the same frequency as the CLK. This output must be wired
to FB_INC
"True" Feedback input, provides feedback signal to the internal PLL for
synchronization with CLK_INT to eliminate phase error
"Complementary" Feedback input, provides signal to the internal PLL
for synchronization with CLK_INC to eliminate phase error
This PLL Clock Buffer is designed for a V_DD of 2.5V, an AV_DD of 2.5V and differential data input and output levels.
ICS95V847 is a zero delay buffer that distributes a differential clock input pair (CLK_INT, CLK_INC) to five differential
pair of clock outputs (CLKT[4:0], CLKC[4:0]) and one differential pair feedback clock output (FB_OUT, FB_OUTC).The
clock outputs are controlled by input clock (CLK_INT, CLK_INC), the feedback clock (FB_INT, FB_INC) and the analog
power input (AV_DD). When AV_DD is grounded, the PLL is turned off and bypassed for test purposes.
The PLL in ICS95V847 clock driver uses the input clock (CLK_INC, CLK_INT) and the feedback clock (FB_INT,
FB_INC) to provide high-performance, low-skew, low-jitter differential output clocks (CLKT[4:0], CLKC[4:0]). ICS95V847
is also able to track Spread Spectrum Clock (SSC) for reduced EMI.
ICS95V847 is characterized for operation from 0°C to 85°C.
0718E—11/24/08
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