参数资料
型号: 78Q2123/F
厂商: Maxim Integrated Products
文件页数: 24/38页
文件大小: 0K
描述: TXRX 10/100 MDIX 3.3V COMM 32QFN
产品培训模块: Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
标准包装: 490
类型: PHY 收发器
驱动器/接收器数: 4/4
规程: IEEE 802
电源电压: 3 V ~ 3.6 V
安装类型: 表面贴装
封装/外壳: 32-VFQFN 裸露焊盘
供应商设备封装: 32-QFN 裸露焊盘(5x5)
包装: 管件
78Q2123/78Q2133 Data Sheet
DS_21x3_001
30
Rev. 1.6
4.7
Analog Electrical Characteristics
4.7.1
100BASE-TX Transmitter
Parameter
Condition
Min
Nom
Max
Unit
Peak Output Amplitude
(|Vp+|, |Vp-|)
(see note below)
Best-fit over 14 bit times;
0.4 dB Transformer loss
950
1050
mVpk
Output Amplitude
Symmetry
|Vp -|
|Vp +|
0.98
1.02
Output Overshoot
Percent of Vp+, Vp-
5
%
Rise/Fall time (tr, tf)
10-90% of Vp+, Vp-
3
5
ns
Rise/Fall time Imbalance
|tr - tf|
500
ps
Duty Cycle Distortion
Deviation from best-fit time-
grid;
010101... Sequence
±250
ps
Jitter
Scrambled Idle
1.4
ns
Note: Measured at the line side of the transformer.
Test Condition: Transformer P/N:
TLA-6T103
Line Termination:
100
±1%
4.7.2
100BASE-TX Transmitter (Informative)
The specifications in the following table are included for information only. They are mainly a function of
the external transformer and termination resistors used for measurements.
Parameter
Condition
Min
Max
Unit
Return Loss
2 < f < 30 MHz
30 < f < 60 MHz
60 < f < 80 MHz
16
20
30
log
f
MHz
10
dB
Open-Circuit Inductance
-8 < Iin < 8 mA
350
H
4.7.3
100BASE-TX Receiver
Parameter
Condition
Min
Nom
Max
Unit
Signal Detect Assertion
Threshold
500
600
700
mVppd
Signal Detect De-assertion
Threshold
275
350
425
mVppd
Differential Input Resistance
20
k
Jitter Tolerance (pk-pk)
Not tested in production
4
ns
Baseline Wander Tracking
-75
+75
%
Signal Detect Assertion Time
Not tested
1000
s
Signal Detect De-assertion
Time
Not tested
4
s
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