PBL38812 Datasheet, PDF (3/10 Pages) Ericsson – Voice-switch circuit for Handsfree speakerphone TAM

PBL 388 12
Electrical Characteristics
f = 1 kHz, T = 25°C, R_CTR=0, C_TxDet = 0, R_Txout = ∞, R_Rxout= ∞, R_F2out= ∞, R_F5out= ∞, R_Tx= 0, R_Rx= 0, C_RxDet = 0 and
I_D=1.0mA unless otherwise noted.
Ref.
Parameter
fig. Condition
Min.
Typ.
Speech control section
Terminal voltage, V
3
+
Internal reference voltage, V_Ref
2
Frequency response for all amplifiers 3
Transmit gain, 20 • ¹⁰ log(V_Txout /V_Txin)
3
Receive gain, 20 • ¹⁰ log(V_Rxout /V_Rxin)
3
Max transmit detector gain,
3
20 • 10 log(V /V )
Txdet Txin
Max receive detector gain,
3
20 • ¹⁰ log(V_Rxdet /V_Rxin)
Background noise rectifier gain, (note 1) 3
+ Tx input impedance
3
In
- Tx_In input impedance
3
- Rx_In input impedance
3
Tx_Out ac, load impedance
3
Rx_Out ac, load impedance
3
F2_Out ac, load impedance
3
F5 ac, load impedance
3
Out
Transmitter channel output swing, v
3
TxOut
Receiver channel output swing, v_RxOut
3
Transmitter output noise, v_TxOut
3
Receiver output noise, v_RxOut
3
Tx_Det sink current, I_TxDetOut
3
Rx_Det source current, I_RxDetOut
3
Tx source current, I
3
Det
TxDet
Rx_Det sink current, I_RxDetOut
3
Tx_Det swing relative to V_Ref , V_TxDetOut
3
Rx_Det swing relative to V_Ref , V_RxDetOut
3
N_Det sink current (fast charge), I_NDet
3
N source current, I
3
Det
NDet
I = 1.0mA
D
200 - 3400 Hz, Relative 1 kHz
V_CMP = V_Ref - 0.1 V
V_CMP = V_Ref + 0.1 V
V_CMP = V_Ref - 0.1 V R_CTR=100k, V_CTR=V+
V = V + 0.1 V R =100k, V =V+
CMP
Ref
CTR
CTR
V_CMP = V_Ref + 0.1 V
V_CMP = V_Ref - 0.1 V
V_CMP = V_Ref + 0.1 V R_CTR=100k, V_CTR=V+
V_CMP = V_Ref - 0.1 V R_CTR=100k, V_CTR=V+
V_TxDet < 200 mV_p , C_Tx = 100nF
V = V - 0.1 V
CMP
Ref
V = V + 0.1 V
CMP
Ref
V_RxDet < 200 mV_p , C_Tx = 100nF
V_CMP = V_Ref +0.1 V
V_CMP = V_Ref - 0.1 V
V_CMP = V_Ref - 0.1 V, C_Txdet=1µF
V_CMP = V_Ref + 0.1 V, C_Txdet=1µF
2%
distortion,R =R =25k
Txout Rxout
Ω
2% distortion,R_Txout=R_Rxout=25k Ω
V_CMP = V_Ref - 0.1 V, v_TxIn = 0 V
V_CMP = V_Ref + 0.1 V, v_RxIn = 0 V
V_TxDetIn = V_Ref + 0.1 V
V_RxIn = V_Ref - 0.1 V
V = V - 0.1 V
CMP
Ref
V_RxDetIn = V_Ref + 0.1 V
V_TxDetIn = V_Ref + 0.1 V
V_RxDetIn = V_Ref - 0.1 V
V_TxDetIn = V_Ref - 0.1 V
V_CMP = V_Ref - 0.1 V
V = V + 0.1 V
TxDetIn
Ref
V = V + 0.1 V
CMP
Ref
3.3
1.96
-1
41.5
44
-6
41.5
44
19
26.5
29
-21
26.5
29
4
67.5
37
42.5
53
22.5
28
6.0
Hold
80
100
2.4
3.0
16
20
10
10
10
10
500
500
-75
-75
-6.0
2.5
6.0
-30
(note 2) -0.7
(note 2) +0.7
-4.5
3
5
Max.
1
-3.5
21.5
-18.5
6.5
120
3.6
24
-2.5
30
-1.5
7
Unit.
V
V
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
kΩ
kΩ
kΩ
kΩ
kΩ
kΩ
kΩ
mV
p
mV_p
dB_psof
dB_A
mA
mA
µA
µA
V
V
mA
µA
3