5. Electrical Characteristics
Symbol
Low-level sink current
I
1
(VDD
= 3.3 V, V
OL
output drive strength set to the maximum)
R
Resistance of internal pull-up resistor
P U
R
Resistance of internal pull-down resistor
P D
V
Low-level input voltage of CHIP_PU to power off the chip
_
IL
nRST
Notes:
1. Please see Appendix IO_MUX of
particular power domain of pins.
2. For VDD3P3_CPU and VDD3P3_RTC power domain, per-pin current sourced in the same domain is gradually
reduced from around 40 mA to around 29 mA, V
3. Pins occupied by flash and/or PSRAM in the VDD_SDIO power domain were excluded from the test.
5.4 Wi-Fi Radio
Parameter
Operating frequency range
note2
Output impedance
note3
TX power
Sensitivity
Adjacent channel rejection
1. Device should operate in the frequency range allocated by regional regulatory authorities. Target operating
frequency range is configurable by software.
2. For the modules that use IPEX antennas, the output impedance is 50 Ω. For other modules without IPEX
antennas, users do not need to concern about the output impedance.
3. Target TX power is configurable based on device or certification requirements.
Espressif Systems
Parameter
= 0.495 V,
OL
ESP32 User Manual
>=2.64 V, as the number of current-source pins increases.
OH
Table 8: Wi-Fi Radio Characteristics
Condition
note1
-
-
-
11b, 1 Mbps
11b, 11 Mbps
11g, 6 Mbps
11g, 54 Mbps
11n, HT20, MCS0
11n, HT20, MCS7
11n, HT40, MCS0
11n, HT40, MCS7
11g, 6 Mbps
11g, 54 Mbps
11n, HT20, MCS0
11n, HT20, MCS7
11
for IO's power domain. VDD is the I/O voltage for a
Min
Typical
2412
-
-
*
802.11b:24.16dBm;802.11g:23.52dBm
802.11n20:23.01dBm;802.11n40:21.18dBm
-
–98
-
–89
-
–92
-
–74
-
–91
-
–71
-
–89
-
–69
-
31
-
14
-
31
-
13
ESP32-WROOM-32UE User Manual V0.1
Min
Typ Max
-
28
-
-
45
-
-
45
-
-
-
0.6
Max
Unit
2462
MHz
-
Ω
dBm
-
dBm
-
dBm
-
dBm
-
dBm
-
dBm
-
dBm
-
dBm
-
dBm
-
dB
-
dB
-
dB
-
dB
Unit
mA
kΩ
kΩ
V
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