Energy Efficient Innovations

Product Overview  


For complete documentation, see the data sheet.

Printed On: 7/11/2015

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

Product Description
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   End Products
  • Wireless LAN
  • FM Radio
  • WiMAX
  • Wireless BT
 
  • Cellular Phones
  • Global Positioning Systems (GPS)
Selected Electrical Specifications

Product Compliance Status Description Type Channels Input / Output Ratio Input Level Output Level VCC Typ (V) tJitterRMS Typ (ps) tskew(o-o) Max (ps) tpd Typ (ns) tR & tF Max (ps) fmaxClock Typ (MHz) fmaxData Typ (Mbps) Package Type
 Pb-free 
 Halide free 
 Active     Clock Fanout Buffer, 2-Channel, Low Phase Noise   Buffer   2   1:2 
 Crystal 
 Sine Wave 
 Square Wave 
 Square Wave 
 2.5 
 3.3 
 5 
 0.37   500 
 10 
 12 
 5000   26     WLCSP-8 
Package Availability
Type
PB free
Standard
WLCSP-8 x