BOOST CONVERTER |
PVDD |
Boost converter output voltage range |
IBOOST = 0 mA |
5.4 |
5.75 |
6.4 |
V |
IBOOST = 700 mA |
|
5.6 |
|
IL |
Boost converter input current limit |
Power supply current |
|
1800 |
|
mA |
Boost converter start-up current limit |
Boost converter starts up from full shutdown |
|
600 |
|
Boost converter wakes up from auto-pass through mode |
|
1000 |
|
fBOOST |
Boost converter frequency |
|
|
1.2 |
|
MHz |
CLASS-D AMPLIFIER |
PO |
Output power |
THD = 1%, VBAT = 2.5 V, f = 1 kHz |
|
1440 |
|
mW |
THD = 1%, VBAT = 3 V, f = 1 kHz |
|
1750 |
|
THD = 1%, VBAT = 3.6 V, f = 1 kHz |
|
1900 |
|
THD = 1%, VBAT = 2.5 V, f = 1 kHz, RL = 4 Ω + 33 µH |
|
1460 |
|
THD = 1%, VBAT = 3 V, f = 1 kHz, RL = 4 Ω + 33 µH |
|
1800 |
|
THD = 1%, VBAT = 3.6 V, f = 1 kHz, RL = 4 Ω + 33 µH |
|
2280 |
|
AV |
Voltage gain |
|
19.5 |
20 |
20.5 |
dB |
VOOS |
Output offset voltage |
|
|
2 |
10 |
mV |
|
Short-circuit protection threshold current |
|
|
2 |
|
A |
RIN |
Input impedance (per input pin) |
|
|
24 |
|
kΩ |
Input impedance in shutdown (per input pin) |
EN = 0 V |
|
1300 |
|
ZO |
Output impedance in shutdown |
|
|
2 |
|
kΩ |
|
Maximum input voltage swing |
EN = 0 V |
|
2 |
|
VRMS |
|
Boost converter auto-pass through threshold |
Class-D output voltage threshold when boost converter automatically turns on |
|
2 |
|
VPK |
fCLASS-D |
Class-D switching frequency |
|
275 |
300 |
325 |
kHz |
η |
Class-D and boost combined efficiency |
PO = 500 mW, VBAT = 3.6 V |
|
90% |
|
|
EN |
Noise output voltage |
A-weighted |
|
49 |
|
μVRMS |
Unweighted |
|
65 |
|
SNR |
Signal-to-noise ratio |
1.7 W, RL = 8 Ω + 33 µH. A-weighted |
|
97.5 |
|
dB |
1.7 W, RL = 8 Ω + 33 µH. Unweighted |
|
95 |
|
2 W, RL = 4 Ω + 33 µH. A-weighted |
|
95 |
|
2 W, RL = 4 Ω + 33 µH. Unweighted |
|
93 |
|
THD+N |
Total harmonic distortion plus noise(1) |
PO = 100 mW, f = 1 kHz |
|
0.06% |
|
|
PO = 500 mW, f = 1 kHz |
|
0.07% |
|
|
PO = 1.7 W, f = 1 kHz, RL = 8 Ω + 33 µH |
|
0.07% |
|
|
PO = 2 W, f = 1 kHz, RL = 4 Ω + 33 µH |
|
0.15% |
|
|
AC PSRR |
AC-Power supply ripple rejection (output referred) |
200 mVPP square ripple, VBAT = 3.8 V, f = 217 Hz |
|
62.5 |
|
dB |
200 mVPP square ripple, VBAT = 3.8 V, f = 1 kHz |
|
62.5 |
|
AC CMRR |
AC-Common mode rejection ratio (output referred) |
200 mVPP square ripple, VBAT = 3.8 V, f = 217 Hz |
|
71 |
|
dB |
200 mVPP square ripple, VBAT = 3.8 V, f = 1 kHz |
|
71 |
|