L38812 查看數據表（PDF） - Unisonic Technologies
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L38812 Datasheet PDF : 8 Pages
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UTC L388 12 LINEAR INTEGRATED CIRCUIT
PARAMETER
TEST CONDITIONS
+TxIn input impedance
-TxIn input impedance
-RxIn input impedance
Txout ac, load impedance
Rxout ac, load impedance
F2out ac, load impedance
F5out ac, load impedance
Transmitter channel output swing, VTXOut 2% distortion, RTxout=RRxout=25 kΩ
Receiver channel output swing, VRxOut 2% distortion, RTxout=RRxout=25 kΩ
Transmitter output noise, VTxOut
VCMP=VRef-0.1V,vTXIn=0V
Receiver output noise, VRxOut
VCMP=VRef+0.1V,vRXIn=0V
TxDet sink current, ITxDetOut
VtxDetIn=VRef+0.1V
RxDet source current, IRxDetOut
VRxIn=VRef-0.1V
TxDet source current, ITxDet
VCMP=VRef-0.1V
RxDet sink current, IRxDetOut
VRxDetIn=VRef+0.1V
TxDet swing relative to VRef, VTxDetOut
VTxDetIn=VRef+0.1V
RxDet swing relative to VRef, VRxDetOut VRxDetIn=VRef-0.1V
NDet sink current (fast charge), INDet
VTxDetIn=VRef-0.1V
VCMP=VRef-0.1V
NDet source current, INDet
VTxDetIn=VRef+0.1V
VCMP=VRef+0.1V
NDet Ieakage current(hold),INDet
VTxDetIn=VRef-0.1V
VCMP=VRef+0.1V
NDet swing relative to VRef,VNDet
VCMP=VRef-0.1V
VTxDetIn=VRef+0.1V
CMP(comparator) sensitivity,
Tx mode=max Tx gain,
Transmit(Tx) mode to receive
Rx mode=max Rx gain
(Rx) mode or vice versa
CTR voltage for 25 dB dynamics,VCTR VCMP=VRef+0.35V,RCTR=100kΩ
CTR voltage for mute,ICTR
VCMP=VRef+0.35V
CTR voltage for disable,VCTR
MIN TYP
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)
(note 2)
-0.7
+0.7
-4.5
MAX
120
3.6
24
-2.5
30
-1.5
UNIT
kΩ
kΩ
kΩ
kΩ
kΩ
kΩ
kΩ
mVp
mVp
dBpsof
dBA
mA
mA
μA
μA
V
V
mA
3
5
7 μA
-100
nA
-0.45
V
50 100 mV
V+
V
μA
0.55 V
Notes:
VNDet-VRef
1. 20· log (
)
VTxDet-VTxDetO
VNDet=voltage at noise detector output
VRef=reference voltage (about 1.9V)
VTxDet=Voltage at transmit detector output
VTxDetO=voltage at transmit detector at the point
when the voltage at the noise detector starts
moving when a signal at transmit channel input is
gradually increased (threshold, typical value 30 mV)
2. Depends on V+. Channels are tracking.
UTC UNISONIC TECHNOLOGIES CO. LTD 4
QW-R108-013,A
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