Low Phase-Noise Two-Channel Clock Fanout Buffer
Description
NB3RL02
Low Phase-Noise Two-Channel Clock Fanout Buffer
The NB3RL02 is a low−skew, low jitter 1:2 clock fan−out buffer, ideal for use in portable end−equipment, such as mobile phones.
With integrated LDO and output control circuitry.
The MCLK_IN pin has an AC coupling capacitor and will directly accept a square or sine wave clock input, such as a temperature compensated crystal oscillator (TCXO).
The minimum acceptable input amplitude of the sine wave is 300 mV peak−to−peak.
The two clock outputs are enabled by control inputs CLK_REQ1 and CLK_REQ2.
The NB3RL02 has an integrated Low−Drop−Out (LDO) voltage regulator which accepts input voltages from 2.
3 V to 5.
5 V and outputs 1.
8 V at Iout = 50 mA.
This 1.
8 V supply is externally available to provide regulated power to peripheral devices, such as a TCXO.
The adaptive clock output buffers offer controlled slew−rate over a wide capacitive loading range which minimizes EMI emissions, maintains signal integrity, and minimizes ringing caused by signal reflections on the clock distribution lines.
The NB3RL02 is offered in a 0.
4 mm pitch wafer−level−chip−scale (WLCS) package and is optimized for very low standby current consumption.
Features
• Low Additive Noise:
♦ −149 dBc/Hz at 10 kHz Offset Phase Noise ♦ 0.
37 ps (rms) Output Jitter
• Limited Output Slew Rate for EMI Reduction
(1 ns to 5 ns/Rise/Fall Time for 10−50 pF Loads)
• Regulated 1.
8 V Output Supply Available for External Clock Source,
ie.
TCX0
• Operation to 80 MHz • Ultra−Small Package:
♦ 8−ball: 0.
4 mm Pitch WLCS
• ESD Performance Exceeds JESD 22
♦ 2000 V Human−Body Model (A114−A) ♦ 200 V Machine Model (A115−A) ♦ 1000 V Charged−Device Model (JESD22−C101−A Level III)
• These are Pb−Free Devices
Applications
• Cellular Phones • Global Positioning Systems (GPS)
www.
onsemi.
com
MARKING DIAGRAMS
WLCSP8 CASE 499BQ
RLYYWW G
RL
= Specific Device Code
YY
= Year
WW = Work Week
G
= Pb−Free Package
LOGIC DIAGRAM
ORDERING INFORMATION
See detailed ordering and shi...
Similar Datasheet
