Specifications

Page 12
WT1231H
2.3 Module Specification
The tables below give the electrical specifications of the transceiver under the following conditions: Supply voltage VBAT1=
VBAT2=VDD=3.3 V, temperature = 25 °C, F
RF
= 915 MHz, Pout = +20dBm, 2-level FSK modulation without pre-filtering,
FDA = 5 kHz, Bit Rate = 4.8 kb/s and terminated in a matched 50 Ohm impedance, unless otherwise specified.
Note Unless otherwise specified, the performances in the other frequency bands are similar or better.
2.3.1. Power
Consumption
Table 4 Power Consumption Specification
Symbol Description Conditions Min Typ Max Unit
IDDSL
Supply current in Sleep mode - 0.1 1 uA
IDDIDLE Supply current in Idle mode RC oscillator enabled - 1.2 - uA
IDDST Supply current in Standby mode Crystal oscillator enabled - 1.25 1.5 mA
IDDFS Supply current in Synthesizer
mode
- 9 - mA
IDDR Supply current in Receive mode - 16 - mA
IDDT Supply current in Transmit mode
with appropriate matching, sta-
ble across VDD range
RFOP = +20 dBm, on PA_BOOST
RFOP = +17 dBm, on PA_BOOST
RFOP = +13 dBm, on RFIO pin
RFOP = +10 dBm, on RFIO pin
RFOP = 0 dBm, on RFIO pin
RFOP = -1 dBm, on RFIO pin
-
-
-
-
-
-
130
95
45
33
20
16
-
-
-
-
-
-
mA
mA
mA
mA
mA
mA
2.3.2. Frequency Synthesis
Table 5 Frequency Synthesizer Specification
Symbol Description Conditions Min Typ Max Unit
FR
Synthesizer Frequency Range
315MHz Module
433MHz Mo
dul
e
868MHz Module
915MHz Module
290
424
862
890
340
510
890
102
0
MHz
MHz
MHz
MHz
FXOSC Crystal oscillator frequency For All Module - 32 - MHz
TS_OSC Crystal oscillator wake-up time - 250 500 us
TS_FS Frequency synthesizer wake-up
time to PllLock signal
From Standby mode - 80 150 us
TS_HOP Frequency synthesizer hop time
at most 10 kHz away from the
target
200 kHz step
1 MHz step
5 MHz step
7 MHz step
12 MHz step
20 MHz step
25 MHz step
-
-
-
-
-
-
-
20
20
50
50
80
80
80
-
-
-
-
-
-
-
us
us
us
us
us
us
us