BCM4330 Preliminary Data Sheet
WLAN Current Consumption
WLAN Current Consumption
The WLAN current consumption measurements are shown in Table 44.
All values in Table 44 are with the Bluetooth core in reset (that is, Bluetooth and FM are off).
Table 44: WLAN Power Consumption (Ivbat+Ivio)
VBATT = 3.6V, VDDIO = 1.8V, TA 25°C
WLAN
Typical Total
Units
a
OFF
10
µA
µA
b
SLEEP
Power Save
Rx (Listen)
Rx (Active)
Tx CCK (21 dBm @ chip)
180
1.25
52
c, d
mA
mA
mA
mA
mA
mA
e
f,g
60
h,i
325
325
300
h,i
Tx OFDM, 54 Mbps (21 dBm @ chip)
Tx MCS7 (20 dBm @ chip)
h,i
a. WL_REG_ON = Low, no VDDSIO
b. Inter-beacon Sleep
c. Beacon Interval = 102.4 ms, DTIM = 1, Beacon duration = 1 ms @1 Mbps. Integrated Sleep + wakeup + Beacon
Rx current over 1 DTIM interval.
d. In WLAN power save mode, the following blocks are powered down: Crystal oscillator, Baseband PLL, AFE, RF
PLL, and the WLAN radio.
The above blocks are turned on in the required order with sufficient time for them to settle. This sequencing
is done by the PMU controller, which controls the settling time for each of the blocks. It also has information
to determine the order in which the blocks should be turned on. The settling times and the dependency order
are programmable in the PMU controller. The default CLK settling time is set to 8 ms at power-up. It can be
reduced after power-up.
Response: Total current consumption (at 20°C) from VBATT = 3.6V when waking up from doze for beacon
reception:
Sleep mode: 180 µA
Turn on XO (~3–4 ms earlier): 3–5 mA
Turn on BBPLL (~1 ms earlier): 10 mA
Run BB on full clock (~1 ms earlier): 28 mA
Turn on RFPLL(~1 ms earlier): 35 mA
Turn on Radio–Listen (~1 ms earlier): 52 mA
Beacon reception: 60 mA
Back to sleep mode: 180 µA
e. Carrier sense (CCA) when no carrier present.
f. Carrier sense (CS) detect/packet Rx.
g. Applicable to all supported rates.
h. Duty cycle is 100%. Includes PA contribution at 3.6V.
i. Absolute junction temperature limits are maintained through active thermal monitoring and dynamic Tx duty
cycle limiting.
®
BROADCOM
BCM4330 Preliminary Data Sheet
April 28, 2011 • 4330-DS304-RI
Page 149
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