TLK111_14 Datasheet, PDF (87/110 Pages) Texas Instruments – PHYTER® Industrial Temperature 10/100Mbs Ethernet Physical Layer Transceiver

TLK111
www.ti.com
SLLSEF8B – AUGUST 2013 – REVISED JANUARY 2014
9.8 Power Supply Characteristics
The data was measured using a TLK111 evaluation board. The current from each of the power supplies is
measured and the power dissipation is computed. For the single 3.3V external supply case the power dissipation
across the internal linear regulator is also included. All the power dissipation numbers are measured at the
nominal power supply and typical temperature of 25°C. The power needed is given both for the device only, and
including the center tap of the transformer for a total system power requirement. The center tap of the
transformer is normally connected to the 3.3V supply, thus the current needed may also be easily calculated.
9.8.1 Active Power, Single Supply Operation
PARAMETER
100Base-TX /W Traffic (full packet 1518B
rate)
10Base-T /W Traffic (full packet 1518B rate)
TEST CONDITIONS
Single 3.3V external supply
FROM POWER PINS
203
96
FROM
TRANSFORMER
CENTER TAP
73
211
UNIT
mW
9.8.2 Active Power, Dual Supply Operation
PARAMETER
100Base-TX /W Traffic (full packet
1518B rate)
10Base-T /W Traffic (full packet
1518B rate)
TEST CONDITIONS
Dual external supplies,
3.3V and 1.55V
FROM 3.3V
POWER
53
23
FROM 1.55V
PFBIN1, PFBIN2
73
35
FROM
UNIT
TRANSFORMER
CENTER TAP
73
mW
212
9.8.3 Power-Down Power
PARAMETER
TEST CONDITIONS⁽¹⁾
FROM 3.3V POWER
IEEE PWDN
Single 3.3V external supply
12
Passive Sleep Mode
71
Active Sleep Mode
71
IEEE PWDN
Dual external supplies,
12
Passive Sleep Mode
3.3V and 1.55V
21
Active Sleep Mode
21
(1) Measured under typical conditions.
FROM 1.55V
PFBIN1, PFBIN2
–
–
–
0
23
23
FROM
TRANSFORMER
CENTER TAP
5
5
5
5
5
5
UNIT
mW
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