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CMX991 Datasheet(PDF) 48 Page - CML Microcircuits |
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CMX991 Datasheet(HTML) 48 Page - CML Microcircuits |
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48 / 56 page  RF Quadrature Transceiver / RF Quadrature Receiver CMX991/CMX992 2015 CML Microsystems Plc 48 D/991_992/20 8.1.3 Operating Characteristics The following conditions apply unless otherwise specified: VDD = AVDD = DVDD = 3.0V to 3.6V; VSS = AVSS = DVSS, TAMB = -40°C to +85°C, SLI disabled. 8.1.3.1 DC Parameters DC Parameters Notes Min. Typ. Max. Units Total Current Consumption Powersave Mode A, F – 10 60 µA VBIAS Only C – 2.1 2.6 mA Operating Currents J Rx Only (with SLI) D – 58 75 mA Rx Only (SLI Disabled) D – 52 – mA Rx IF and PLL Only H – 37 – mA Synth Only D – 14 20 mA Tx Only (RF Output) G – 82 108 mA Tx Only (IF Output) G – 61 76 mA Current from VDDIO B – 0.3 600 µA Logic ‘1’ Input Level 70% – – VDDIO Logic ‘0’ Input Level – – 30% VDDIO Outpu t Logic ‘1’ Level (lOH = 0.6 mA) 80% – – VDDIO Output Logic ‘0’ Level (lOL = -1.0 mA) – – +0.4 V Power-up Time Reference Voltage All Blocks Except Reference Voltage E E – – – – 0.5 10 ms µs Internal Bandgap Voltage (VBG) 1.06 1.13 1.2 V External Bias Voltage (VBIAS) – derived from VBG 1.45 1.6 1.75 V Notes: A. Powersave mode includes the state after General Reset with all analogue and digital supplies applied and also the case with VDD applied but with all analogue supplies disconnected (i.e. in this later scenario, power from VDD will not exceed the specified value whatever the state of the registers). B. Assumes 30pF on each C-BUS interface line and an operating serial clock frequency of 5MHz. C. The stated current drawn here is with the bandgap reference and accompanying bias current generators enabled only (register $11, b7), all other circuitry is disabled. D. Not including any current drawn from the device pins by external circuitry: Rx only – All Rx circuitry including SLI , synthesiser and bias generator. Synth only – Synthesiser, NR Amplifier, VCO Buffer and bias generator. E. As measured from the rising edge of CSN. F. At TAMB = 25ºC, not including any current drawn from the CMX991/CMX992 pins by external circuitry. G. Tx only – Tx circuitry plus synthesiser, VCO, buffer and bias generator. IF output excludes the Tx Image Reject Mixer, but includes the IF Output buffer. H. Rx IF and PLL – IF amplifier and I/Q mixers plus synthesiser, VCO, buffer and bias generator J. Total current from AVDD, DVDD and VDDIO. |
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