User Manual

Bluetooth Audio Module
Ehong Technology Co., Ltd
Table 4: Digital Terminal
4.4.2. USB
Min
Type
Max
Unit
VDD_USB for correct USB operation
3.10
3.30
3.60
V
Input Threshold
V
IL
input logic level low
-
-
0.30 x
VDD_US
B
V
V
IH
input logic level high
0.70 x
VDD_US
B
-
-
V
Input Leakage Current
VSS_DIG < V
IN
< VDD_USB
(a)
-1
1
5
µA
C
I
input capacitance
2.5
-
10
pF
Output Voltage Levels to Correctly Terminated USB Cable
V
OL
output logic level low
0
-
0.2
V
V
OH
output logic level high
2.80
-
VDD_USB
V
Table 5: USB Terminal
(a) Internal USB pull-up disable
4.4.3. Internal CODEC Analogue to Digital Converter
Analogue to Digital Converter
Parameter
Conditions
Min
Type
Max
Unit
Resolution
-
-
-
16
Bits
Input Sample
Rate,
F
sample
-
8
-
48
kHz
f
in
= 1kHz
B/W =
20Hz→F
sample
/
F
sample
8kHz
-
93
-
dB
16kHz
-
92
-
dB