NRF401-IC ETC, NRF401-IC Datasheet
NRF401-IC
Related parts for NRF401-IC
NRF401-IC Summary of contents
Page 1
... Transmit supply current @ -10 dBm output power Standby supply current Table 1. nRF401 quick reference data. ORDERING INFORMATION Type number nRF401-IC nRF401-EVKIT Table 2. nRF401 ordering information. * The PWR_UP pin is used for power duty cycling. The duty-cycle with a period of 200msec. Nordic VLSI ASA ...
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... PRODUCT SPECIFICATION nRF401 Single Chip RF Transceiver DEM DOUT 10 TXEN DIN 9 PWR_UP OSC REFERENCE Figure 1. nRF401 block diagram with external components. PIN FUNCTIONS Pin Name Pin function 1 XC1 Input 2 VDD Power 3 VSS Ground 4 FILT1 Input 5 VCO1 Input 6 VCO2 Input 7 VSS ...
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... Sensitivity @ 400 ,BR=20 kbit/s, BER < 10 Bit rate Z Recommended antenna port differential impedance I Spurious emission Table 4. nRF401 electrical specifications. 1) Maximum 5dB sensitivity degradation at temperature extremes. See also page 11. 2) With a PCB loop antenna or a differential to single ended matching network antenna. ABSOLUTE MAXIMUM RATINGS Supply voltages VDD ...
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... PRODUCT SPECIFICATION nRF401 Single Chip RF Transceiver PIN ASSIGNMENT XC1 VDD VSS FILT1 VCO1 VCO2 VSS VDD DIN DOUT 10 Figure 2. nRF401 pin assignment. PACKAGE OUTLINE nRF401, 20 pin SSOIC. (Dimensions in mm Package Type D 20 pin SSOIC Min 6.90 (Wide) 7.50 Max Figure 3 ...
Page 5
... Switching between standby and RX-mode (operational mode). The time from the PWR_UP input is set to “1”, until the data (DOUT) is valid is t see Table 5. Worst case t is 3ms for nRF401 as can be seen in Figure 5 (a). SR Switching between standby and TX-mode (operational mode). ...
Page 6
... Figure 5 Timing diagram for nRF401 when going from standby to RX-mode (a) or Power up to transmit-mode (start-up). To avoid spurious emission outside the ISM-band when the power supply is switched on, the TXEN-input must be kept low until the synthesised frequency is stable, see Figure 6 (a). ...
Page 7
... When connecting a differential loop antenna to the ANT1/ANT2 pins, VDD should be supplied through the centre of the loop antenna as shown in Figure 12. A single ended antenna or 50 test instrument may be connected to nRF401 by using a differential to single ended matching network (BALUN) as shown in Figure 7. ANT1 ...
Page 8
... Single Chip RF Transceiver An additional notch filter (L and C) at the 50 dependent on the application requirements (see application note nAN400-05). A single ended antenna may also be connected to nRF401 using an 8:1 impedance RF transformer. The RF transformer must have a centre tap at the primary side for VDD supply. RF output power The external bias resistor R3 connected between the RF_PWR pin and VSS sets the output power ...
Page 9
... An external 22nH inductor connected between the VCO1 and VCO2 pins is required for the on-chip voltage controlled oscillator (VCO). This inductor should be a high quality chip inductor, Q > 433 MHz, with a maximum tolerance of ± 2%. The following 22 nH inductors (0603) are suitable for use with nRF401. Vendors WWW address Pulse http://www ...
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... Internal External components Crystal C1 Figure 10. Crystal oscillator and crystal equivalent. Sharing a reference crystal with a micro-controller Figure 11 shows circuit diagram of a typical application where nRF401 and a micro controller share the reference crystal. controller X1 4.0 MHz C1 22pF Figure 11. nRF401 and a micro-controller sharing the reference crystal. ...
Page 11
... A well-designed PCB is necessary to achieve good RF performance. A PCB with a minimum of two layers including a ground plane is recommended for optimum performance. The nRF401 DC supply voltage should be decoupled as close as possible to the VDD pins with high performance RF capacitors, see Table preferable to mount a Nordic VLSI ASA - Vestre Rosten 81, N-7075 Tiller, Norway - Revision: 1 ...
Page 12
... Long power supply lines on the PCB should be avoided. All device grounds, VDD connections and VDD bypass capacitors must be connected as close as possible to the nRF401 IC. For a PCB with a topside RF ground plane, the VSS pins should be connected directly to the ground plane. For a PCB with a bottom ground plane, the best technique is to have via holes in or close to the VSS pads ...
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... PRODUCT SPECIFICATION nRF401 Single Chip RF Transceiver APPLICATION SCHEMATIC C5 2.2uF 1206 C4 15nF 0603 L1 C3 22nH 820pF 0603 0603 R2 4.7K 0603 PLL FILTER Figure 12. nRF401 application schematic. Component C1 NP0 ceramic chip capacitor, (Crystal oscillator) C2 NP0 ceramic chip capacitor, (Crystal oscillator) C3 X7R ceramic chip capacitor, (PLL loop filter) ...
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... PRODUCT SPECIFICATION nRF401 Single Chip RF Transceiver a) Top silk screen c) Top view Figure 13. PCB layout (example) for nRF401 with loop antenna. Nordic VLSI ASA - Vestre Rosten 81, N-7075 Tiller, Norway - Revision: 1.5 b) Bottom silk screen d) Bottom view Phone +4772898900 - Fax +4772898989 Page May 2000 ...
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... PRODUCT SPECIFICATION nRF401 Single Chip RF Transceiver DEFINITIONS Data sheet status Objective product specification This datasheet contains target specifications for product development. Preliminary product This datasheet contains preliminary data; supplementary data may be specification published from Nordic VLSI ASA later. Product specification This datasheet contains final product specifications. Nordic VLSI ASA reserves the right to make changes at any time without notice in order to improve design and supply the best possible product ...
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... PRODUCT SPECIFICATION nRF401 Single Chip RF Transceiver YOUR NOTES Nordic VLSI ASA - Vestre Rosten 81, N-7075 Tiller, Norway - Revision: 1.5 Phone +4772898900 - Fax +4772898989 Page May 2000 ...
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... PRODUCT SPECIFICATION nRF401 Single Chip RF Transceiver YOUR NOTES Nordic VLSI ASA - Vestre Rosten 81, N-7075 Tiller, Norway - Revision: 1.5 Phone +4772898900 - Fax +4772898989 Page May 2000 ...
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... PRODUCT SPECIFICATION nRF401 Single Chip RF Transceiver Nordic VLSI - World Wide Distributors For Your nearest dealer, please see http://www.nvlsi.no Vestre Rosten 81, N-7075 Tiller, Norway Phone: + 00, Fax: + Visit the Nordic VLSI ASA website at http://www.nvlsi.no Revision: 1.5 Main Office: E-mail: nRF@nvlsi ...