78Q2133/F Maxim Integrated Products, 78Q2133/F Datasheet - Page 33

• Manufacturer Part Number: 78Q2133/F
• Description: TXRX 10/100 MDIX 3.3V IND 32-QFN
• Manufacturer: Maxim Integrated Products
• Type: 10/100 Fast Ethernetr

Specifications of 78Q2133/F

• Operating Supply Voltage: 3.3 V
• Supply Current: 88 mA
• Operating Temperature Range: - 40 C to + 85 C
• Package / Case: QFN-32
• Mounting Style: SMD/SMT
• Operating Frequency: 25 MHz
• Supply Voltage (max): 3.6 V
• Supply Voltage (min): 2 V
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

DS_21x3_001
4.8
Two simple 1:1 isolation transformers are required at the line interface. Transformers with integrated
common-mode chokes are recommended for exceeding FCC requirements. This table gives the
recommended line transformer characteristics.
Note: The 100Base-TX amplitude specifications assume a transformer loss of 0.4 dB. For the transmit
line transformer with higher insertion losses, up to 1.2 dB of insertion loss can be compensated by
selecting the appropriate setting in the Transmit Amplitude Selection bits in register MR19.15:14.
4.9
If the internal crystal oscillator is to be used, a crystal with the following characteristics should be chosen.
* Equivalent differential capacitance across the XTLP/XTLN pins.
** If crystal with a larger load is used, external shunt capacitors to ground should be added to make up
the equivalent capacitance difference.
Rev. 1.6
Parameters at 25
Temperature Stability ( 0 - 70
Motional Capacitance (min)
Inter-Winding Capacitance
Spurious Response (max)
Shunt Capacitance (max)
Series Resistance (max)
Open-Circuit Inductance
Isolation Transformers
Reference Crystal
Frequency Tolerance
Leakage Inductance
Load Capacitance*
Oscillation Mode
Drive Level (typ)
D.C. Resistance
Insertion Loss
Turns Ratio
Frequency
HIPOT
Name
Name
Aging
o
C ± 2
o
C ; Drive Level = 0.5 mW
o
C)
Parallel Resonance, Fundamental Mode
> 5 dB below main within 500 kHz
1 CT : 1 CT ± 5%
0.40 µH (max)
350 µH (min)
25 pF (max)
0.9 Ω (max)
0.4 dB (typ)
1500 Vrms
25.00000
50-100
Value
Value
±50
4**
±2
±5
10
10
60
78Q2123/78Q2133 Data Sheet
@ 10 mV, 10 kHz
@ 1 MHz (min)
0 - 65 MHz
Condition
PPM/yr
Units
MHz
PPM
PPM
µW
pF
pF
pF
Ω
33