Diodes Incorporated PI6CG338Q AECQ-Grade 2 PCIe® 6.0 Clock Generator

Diodes Incorporated PI6CG338Q AECQ-Grade 2 PCIe 6.0 Clock Generator is an 8-output, very low power PCIe® (Gen 1 through Gen 6) clock generator. The PI6CG338Q uses a 25MHz crystal or CMOS reference as an input to generate the 100MHz low-power differential HCSL outputs with on-chip terminations. On-chip terminations save 32x external resistors and make the layout easier. An additional buffered reference output (provided) serves as a low-noise reference for other circuitry.

The PI6CG338Q Clock Generator uses Diodes’ proprietary PLL design to achieve a very low jitter that meets PCIe Gen 1 through Gen 6 requirements. Users can easily configure the device with various slew rate and amplitude options through the SMBUS. The device also supports selectable spread-spectrum options to reduce EMI for multiple applications.

Features

3.3V supply voltage
25MHz crystal/CMOS input
8x differential low-power HCSL outputs with on-chip termination
Individual output enable
Reference CMOS output
Programmable slew rate and output amplitude for each output
Differential outputs blocked until the PLL is locked
Selectable 0%, -0.25%, or -0.5% spread on differential outputs
Strapping pins or SMBus for configuration
Differential output-to-output skew of <60ps
PCIe Gen 1/Gen 2/Gen 3/Gen 4/Gen 5/Gen 6 compliant

Very-low jitter outputs
- PCIe 6.0 common clock (RMS) jitter of <0.04ps
- Differential cycle-to-cycle jitter of <50ps
Supports Automotive Grade 2
Totally lead-free and fully RoHS compliant
Halogen- and antimony-free, green device
Suitable for automotive applications requiring specific change control; AEC-Q100 qualified, PPAP capable, and manufactured in IATF 16949 certified facilities
48-contact, 6mm × 6mm (ZLW) packaging

Specifications

Power supply voltage ranges
- 3.3135V to 3.465V
- 1.0V to 3.465V output
- 3.135V to 3.465V reference output
Power supply current ranges, all outputs active at 100MHz
- 32mA maximum, 20mA typical
- 25mA maximum analog, 22mA typical
- 34mA maximum for outputs, 29mA typical
Power supply wake-on-LAN current
- 1mA maximum analog, 0.5mA typical
- 6mA maximum, 3mA typical
- 0.1mA maximum for outputs, 0.04mA typical
Power supply power down current
- 1mA maximum analog, 0.5mA typical
- 2mA maximum, 1mA typical
- 0.1mA maximum for outputs, 0.05mA typical
Input
- 120kΩ typical internal pull-up/-down resistance
- 8pF typical internal capacitance
- 7nH maximum pin inductance
Crystal
- Fundamental mode of operation
- 25MHz typical frequency
- 50Ω maximum equivalent series resistance
- 8pF typical load capacitance
- 7pF maximum shunt capacitance
- 200µW maximum drive level

SMBus
- 2.7V to 3.6V nominal bus voltage range
- 4mA minimum sink current
- 0.4V maximum output low voltage
- 500kHz maximum operating frequency
- 1000ns maximum rise time
- 300ns maximum fall time
30kHz to 33kHz spread spectrum modulation frequency range
LVCMOS DC characteristics
- ±5µA to ±50µA input current range
- 20Ω typical CMOS output impedance
- 1.5pF to 5pF input capacitance
LVCMOS AC characteristics
- 25MHz typical input frequency
- 5ns maximum rise/fall time
- 1ms maximum clock stabilization, 0.75ms typical
Temperatures
- -40°C to +105°C ambient range
- +125°C maximum junction
2000V maximum ESD protection (HBM)

Diodes Incorporated PI6CG338Q AECQ-Grade 2 PCIe® 6.0 Clock Generator

Features

Specifications

Block Diagram

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