NB3RL02: Clock Fanout Buffer, 2-Channel, Low Phase Noise

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 (0.77 mm x 1.57 mm) and is optimized for very low standby current consumption.

Features
  • Low Additive Noise: -149 dBc/Hz at 10 kHz Offset Phase Noise
  • Regulated 1.8 V Output Supply Available for External Clock Source,ie. TCX0
  • Ultra-Small Package: 8-ball: 0.4 mm Pitch WLCS (0.77 mm x 1.57 mm)
  • ESD Performance Exceeds JESD 22: 2000 V Human Body Model
Applications
  • Wireless LAN
  • FM Radio
  • WiMAX
  • Wireless BT
End Products
  • Cellular Phones
  • Global Positioning Systems (GPS)
Data Sheets (1)
Document TitleDocument ID/SizeRevisionRevision Date
Low Phase-NoiseTwo-Channel Clock Fanout BufferNB3RL02/D (94kB)3
Package Drawings (1)
Document TitleDocument ID/SizeRevision
WLCSP8 1.57x0.77499BQ (30.3kB)A
Order Information
ProductStatusCompliancePackageMSL*ContainerBudgetary Price/Unit
NB3RL02FCT2GActivePb-free Halide freeWLCSP-8499BQ1Die Surf Tape and Reel3000Contact BDTIC
Specifications
ProductTypeChannelsInput / Output RatioInput LevelOutput LevelVCC Typ (V)tJitterRMS Typ (ps)tskew(o-o) Max (ps)tpd Typ (ns)tR & tF Max (ps)fmaxClock Typ (MHz)fmaxData Typ (Mbps)
NB3RL02FCT2GBuffer21:2Sine Wave Crystal Square WaveSquare Wave5 3.3 2.50.3750012 10500026
Low Phase-NoiseTwo-Channel Clock Fanout Buffer (94kB) NB3RL02
WLCSP8 1.57x0.77 NB3RL02