RFM22 Datasheet, PDF (8/150 Pages) –

RFM22
Table 5. Auxiliary Block Specifications¹
Parameter
Symbol
Conditions
Temperature Sensor
Accuracy²
TSA
When calibrated using temp
sensor offset register
Temperature Sensor
Sensitivity²
TSS
Low Battery Detector
Resolution²
LBDRES
Low Battery Detector
Conversion Time²
LBDCT
Microcontroller Clock
Configurable to 30 MHz,
Output Frequency
15 MHz, 10 MHz, 4 MHz,
MC
3 MHz, 2 MHz, 1 MHz, or
32.768 kHz
General Purpose ADC
Accuracy²
ADCENB
General Purpose ADC
Resolution²
ADCRES
Temp Sensor & General
Purpose ADC Conversion
Time²
ADCCT
30 MHz XTAL Start-Up time
t30M
30 MHz XTAL Cap
Resolution²
30MRES
32 kHz XTAL Start-Up Time²
t32K
32 kHz XTAL Accuracy²
32 kHz RC OSC Accuracy²
POR Reset Time
Software Reset Time²
32KRES
32KRCRES
tPOR
tsoft
Notes:
1. All specification guaranteed by production test unless otherwise noted.
2. Guaranteed by qualification.
Min
Typ Max Units
—
0.5
—
°C
—
5
— mV/°C
—
50
— mV
—
250
—
μs
32.768K — 30M Hz
—
8
—
bit
—
4
— mV
—
305
—
μs
—
1
— ms
—
97
—
fF
—
6
— sec
—
100
— ppm
—
2500 — ppm
—
16
— ms
—
100
—
μs
8
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