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CMX991 Datasheet(PDF) 48 Page - CML Microcircuits

Part No. CMX991
Description  Two-mode demodulator
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Maker  CMLMICRO [CML Microcircuits]
Homepage  http://www.cmlmicro.com
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CMX991 Datasheet(HTML) 48 Page - CML Microcircuits

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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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