TNETEL1400

EtherLoop

™ TRANSCEIVER

SPHS004A – FEBRUARY 1999 – REVISED MARCH 1999

10

POST OFFICE BOX 655303

receiver (see Figures 6 and 7) (continued)

PARAMETER

TEST CONDITIONS

MIN

TYP†

MAX

UNIT

RX output total

harmonic distortion

RL = 2 kΩ, CL = 20 pF, TX_EN = 0, V(RXOUT) = 2 VPP,

V(RXIP – RXIN) = 0.04 VPP sinusoid at f = 500 kHz

RX_TERM = 1,

RXGAIN = 111

–40

dBc

RX ZIN

RL = 2 kΩ, CL = 20 pF, RXGAIN = 111, TX_EN = 0,

RX_TERM = 1

77

110

143

Ω

RX ZIN

L

,

L

,,

_

,

V(RXIP – RXIN) = 0.04 VPP sinusoid at f = 500 kHz

RX_TERM = 0

10

k

Ω

RX maximum

supply current

RL = 2 kΩ, CL = 20 pF, TX_EN = 0, V(RXOUT) = 4 VPP,

V(RXIP – RXIN) = 0.04 VPP sinusoid at f = 500 kHz

RX_TERM = 1,

RXGAIN = 111

20

mA

RX power-up time

RL = 2 kΩ, CL = 20 pF, TX_EN = 0,

V(RXIP – RXIN) = 0.04 VPP sinusoid at f = 500 kHz

(see Note 2)

RX_TERM = 1,

RXGAIN = 111

30

µs

Power-down

supply current

RL = 2 kΩ, CL = 20 pF, RX_TERM = 1, TX_EN = 0,

V(RXIP – RXIN) = 0.04 VPP sinusoid at f = 500 kHz

(see Note 2)

TXGAIN = 1111,

RXGAIN = 000

3

mA

† All typical values are at VCC = 5 V, TA = 25°C (unless otherwise noted).

NOTE 2. The power-up/power-down time is the time it takes for the signal path to completely settle and meet all the transmission specifications

after TXGAIN and RXGAIN are set to power-up condition or switched from one gain setting to another. This time consists of slewing

and exponential settling of bias and AC coupling capacitors and, therefore, the values of these components must be as shown in the

application diagram, Figure 4.