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Part Number: ASM5I9772A
Description: The ASM5I9772A is a low-voltage high-performance 200 MHz PLL-based...
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ASM5I9772A
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General Description
ASM5I9772A General Description
The ASM5I9772A is a low-voltage high-performance 200 MHz PLL-based zero delay buffer, designed for high- speed clock-distribution applications.
The ASM5I9772A features one on-chip crystal oscillator and two LVCMOS reference clock inputs and provides 12 outputs partitioned in three banks of four outputs each. Each bank divides the VCO output per SEL(A:C) settings, see Functional Table.
These dividers allow output to input ratios of 8:1, 6:1, 5:1, 4:1, 3:1, 8:3, 5:2, 2:1, 5:3, 3:2, 4:3, 5:4, 1:1, and 5:6. Each LVCMOS-compatible output can drive 50Ω series or parallel-terminated transmission lines. For series- terminated transmission lines, each output can drive one or two traces, giving the device an effective fanout of 1:24.
The PLL is ensured stable given that the VCO is configured to run between 200 MHz and 500 MHz. This allows a wide range of output frequencies from 8 MHz to 200 MHz. For normal operation, the external feedback input, FB_IN, is connected to the feedback output, FB_OUT. The internal VCO is running at multiples of the input reference clock set by the feedback divider, see Frequency Table.
When PLL_EN is LOW, PLL is bypassed and the reference clock directly feeds the output dividers. This mode is fully static and the minimum input clock frequency specification does not apply.
ASM5I9772A Maximum Ratings
|
Parameter |
Description |
Condition |
Min |
Max |
Unit |
|
VDD |
DC Supply Voltage |
-0.3 |
5.5 |
V | |
|
VDD |
DC Operating Voltage | Functional |
2.375 |
3.465 |
V |
|
VIN |
DC Input Voltage | Relative to VSS |
-0.3 |
VDD+ 0.3 |
V |
|
VOUT |
DC Output Voltage | Relative to VSS |
-0.3 |
VDD+ 0.3 |
V |
|
VTT |
Output termination Voltage |
- |
VDD ÷2 |
V | |
|
LU |
Latch-up Immunity | Functional |
200 |
- |
mA |
|
RPS |
Power Supply Ripple | Ripple Frequency < 100 kHz |
- |
150 |
mVp-p |
|
TS |
Temperature, Storage | Non-functional |
-65 |
+150 |
|
|
TA |
Temperature, Operating Ambient | Functional |
-40 |
+85 |
|
|
TJ |
Temperature, Junction | Functional |
- |
+150 |
|
|
ØJC |
Dissipation, Junction to Case | Functional |
- |
23 |
/W |
|
ØJA |
Dissipation, Junction to Ambient | Functional |
- |
55 |
/W |
|
ESDH |
SD Protection (Human Body Model) |
2000 |
- |
V | |
|
FIT |
Failure in Time | Manufacturing test |
10 |
ppm | |
ASM5I9772A Features
` Output frequency range: 8.33 MHz to 200 MHz
` Input frequency range: 6.25 MHz to 125 MHz
` 2.5V or 3.3V operation
` Split 2.5V/3.3V outputs
` ±2% max Output duty cycle variation
` 12 clock outputs: drive up to 24 clock lines
` One feedback output
` Three reference clock inputs: crystal or LVCMOS
` 300pS max output-output skew
` Phase-locked loop (PLL) bypass mode
` 'SpreadTrak'
` Output enable/disable
` Pin-compatible with CY29772, MPC9772 and MPC972
` Industrial temperature range: 40°C to +85°C
` 52 pin 1.0 mm TQFP package
` RoHS Compliance
` Input frequency range: 6.25 MHz to 125 MHz
` 2.5V or 3.3V operation
` Split 2.5V/3.3V outputs
` ±2% max Output duty cycle variation
` 12 clock outputs: drive up to 24 clock lines
` One feedback output
` Three reference clock inputs: crystal or LVCMOS
` 300pS max output-output skew
` Phase-locked loop (PLL) bypass mode
` 'SpreadTrak'
` Output enable/disable
` Pin-compatible with CY29772, MPC9772 and MPC972
` Industrial temperature range: 40°C to +85°C
` 52 pin 1.0 mm TQFP package
` RoHS Compliance
ASM5I9772A Connection Diagram
ASM5I9772A
PDF/DataSheet Download
- Datasheet: ASM5I9772A
- File Size: 597381 KB
- Manufacturer: ALSC [Alliance Semiconductor Corporation]
- Click here to Download
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