DS2290 Просмотр технического описания (PDF) - Dallas Semiconductor -> Maxim Integrated
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DS2290 Datasheet PDF : 9 Pages
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DS2290
ANALOG ELECTRICAL CHARACTERISTICS
(0°C to 70°C; VDD=5V ± 5%)
PARAMETER
SYMBOL MIN
TYP
MAX
UNITS NOTES
Input Impedance at RXTIP and
IZ
RXRING at 772 KHz
95
100
105
ohms
1
Transmit Jitter Generation
JGEN
0.03
UIpp
2
Transmit Pulse Amplitude
PAMP
2.5
3.0
3.5
Vpk
3,4,5
Pulse Width Balance @ 50%
PWBAL
1
10
ns
3,6
Pulse Amplitude Balance
PABAL
10
100
mV
3,6
Power Level at 772 KHz
PLVL
12
19
dBm
7
NOTES:
1. RX+ and RX– left open circuited.
2. Jitter present at TXTIP and TXRING with no jitter at TCLK (LB=0) or LCLK (LB=1).
3. Measured with 100 ohm (±5%) termination at TXTIP and TXRING.
4. Measured directly at TXTIP and TXRING with 0 dB of line build out.
5. Pulse shape meets template in Figure 3 over temperature and voltage.
6. Measured over 17 consecutive pulses.
7. Measured in a 2 KHz to 3 KHz band about 772 KHz; power level in a 2 to 3 KHz band at 1.544 MHz is at least
25 dB lower.
DIGITAL ELECTRICAL CHARACTERISTICS
PARAMETER
SYMBOL MIN
TYP
TCLK Period
tP
TPOS, TNEG or LPOS, LNEG
tSD
50
Setup Time to TCLK or LCLK
Falling
TPOS, TNEG or LPOS, LNEG
tHD
50
Hold Time from TCLK or LCLK
Falling
NOTE:
1. Necessary to meet current carrier and FCC specifications.
(0°C to 70°C; VDD=5V ± 5%)
MAX
UNITS NOTES
±32
ppm
1
ns
ns
AC TIMING DIAGRAM Figure 5
tP
TCLK
LCLK
TPOS, TNEG
LPOS, LNEG
tSD
tHD
022798 8/9
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