U4082B Datasheet, PDF (16/30 Pages) ATMEL Corporation – Low-voltage Voice-switched IC for Hands-free Operation

6. Electrical Characteristics (Continued)
T_amb = +25°C, V_S = 5.0 V, CD ≤0.8 V, unless otherwise specified
Parameters
Test Conditions
Closed loop gain
HTO– to HTO+
Input bias current
at HTI
HTO high voltage
HTO low voltage
HTO+ high voltage
HTO+ low voltage
Distortion
I_O = –5.0 mA
I_O = +5.0 mA
I_O = –5.0 mA
I_O = +5.0 mA
300 Hz < f < 10 kHz
(see Figure 6-1)
Level Detectors and Background Noise Monitors
Transmit receive switching threshold
Current ratio from T to R
at RLI1 + RLI2 to 20 mA
at TLI1 + TLI2 to switch
Source current
RLO1, RLO2, TLO1, TLO2
Sink current
RLO1, RLO2, TLO1, TLO2
CPR, CPT output resistance
CPR, CPT leakage current
I_O = 1.2 mA
Filter
Voltage offset at FO
FO sink current
V_FO – V_B, 220 kΩ from V_B to FI
FI bias current
System Distortion
R Mode
From FI to RECO,
FO connected to RI
T Mode
From MIC to HTO–/HTO+,
includes T attenuator
Symbol
G_VCLH
I_BH
V_HT H
V_HT L
V_HT H
V_HT L
d
Min.
–0.35
3.7
3.7
Typ.
0.0
–30.0
0.3
Max.
+0.35
250.0
450.0
Unit
dB
nA
V
mV
V
mV
%
I_TH
I_LSO
I_LSK
R_CP
I_CPLK
0.8
1.0
1.2
–2.0
mA
4.0
µA
35
Ω
–0.2
µA
FO_VOS
–200.0 –90
0.0
mV
I_FO
150.0
260
400.0
µA
I_FI
–50.0
nA
d_R
0.5
3.0
%
d_T
0.8
3.0
%
Figure 6-1. Hybrid Amplifier Distortion Test
51 kΩ
10 kΩ
7
V_I
0.1 µF ^HTI
-
+
V_B
6 HTO-
R
R
-
+
V_B
1200Ω _Amplifier
5
HTO+
Analyzer
16 U4082B
4743D–CORD–03/06