Rainbow-electronics U2741B User Manual

Rev. 4733A–RKE–11/03Features• Very High Transmitting Frequency Accuracy Compared to SAW Solutions(Enables Receivers at Lower Bandwidth than with SAW R

2U2741B4733A–RKE–11/03Figure 1. System Block Diagram Figure 2. Block Diagram Demod.IF AmpLNA VCOPLL XTOControlU3741BM1...3Micro-controllerPoweramp.X

3U2741B4733A–RKE–11/03Pin ConfigurationFigure 3. Pinning SSO16 VCCCLKGNDLFVCCLFGNDLFASKFSK12345678161514131211109PWRVCCANTPWRGND1PWRGND2XTO1XTO2DIVIC

4U2741B4733A–RKE–11/03General Description The fully integrated VCO and the “single-ended open-collector” output allow particularlysimple, low-cost RF

5U2741B4733A–RKE–11/03Output Power MeasurementThe output network [as shown in Figure 4] can be used for output power evaluation, theexact values of L1

6U2741B4733A–RKE–11/03Absolute Maximum RatingsStresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device.

7U2741B4733A–RKE–11/03Oscillator frequency XTOM-version: at Tamb = 25°CN-version: full temperature range (monitoring)Crystal frequency = 13.56 MHzCrys

8U2741B4733A–RKE–11/03Package Information Ordering InformationExtended Type Number Package RemarksU2741B-NFB SSO16Tube, optimized power-supply rejecti

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