User's Manual

Note d‘étude / Technical document :
URD1– OTL 5696.1– 003 / 72361 Edition 02
HILO 3G Application Note
17 January 2011 - Page 15 / 38
Supply current
Active state
Idle state
–
50
10
100
100
uA
nA
Parameter
Test conditions
Min
Typ
Max
Units
Notes
Full-scale input
voltage
Voltage across either MIC1P and
MIC1N,
MIC2P and MIC2N, or
LINEIN_LP and
LINEIN_LN, 0 dB gain
0.89
1
1.12
Vrms
Voltage across either MIC1P and
MIC1N,
MIC2P and MIC2N, or
LINEIN_LP and
LINEIN_LN, 24 dB gain
56.2
61.3
70.8
Vrms
Gain error
(absolute)
0 and 24 dB gain settings for all
inputs.
Measured at 13 dB below the
maximum
input level for the given gain
setting.
-1
0.2
1
dB
Output referred
noise
0 dB gain, input grounded
A-weighted
–
-86.92
-
88.91
dBFS
24 dB gain, input grounded
A-weighted
–
-83.92
-
83.92
dBFS
Input
impedance
Differential mode
16
20
24
kΩ
Single-ended mode
8
10
12
kΩ
Parameter
Test conditions
Min
Typ
Max
Units
Notes
THD+N ratio
0 dB analog gain
Input frequency = 1.02 kHz
Output = -1 dBFS
40
90.84
–
dB
Measurement BW =
22 to Fs/2; (no
A-weighting)
24 dB analog gain
Input frequency = 1.02 kHz
Output = -1 dBFS
40
82.43
–
dB
Input
capacitance
At each pin, for all inputs
–
–
5
pF
Input offset
voltage
-5
–
5
mV
Signal-to-noise
ratio
0 dB gain, input grounded
A-weighted
TBD
TBD
–
dB
24 dB gain, input grounded
A-weighted
TBD
TBD
–
dB
Sensitivity
- 39 dB
~-42 dB
SPL(0 dB
= 1 V/Pa
@ 1kHz)
Figure 13: Microphone performance requirements