参数资料
型号: DS2290
厂商: DALLAS SEMICONDUCTOR
元件分类: Telecom IC:Other
英文描述: SPECIALTY TELECOM CIRCUIT, SMA30
文件页数: 8/9页
文件大小: 100K
代理商: DS2290
TCLK
LCLK
TPOS, TNEG
LPOS, LNEG
tSD
tHD
tP
DS2290
022798 8/9
ANALOG ELECTRICAL CHARACTERISTICS
(0
°C to 70°C; VDD=5V ± 5%)
PARAMETER
SYMBOL
MIN
TYP
MAX
UNITS
NOTES
Input Impedance at RXTIP and
RXRING at 772 KHz
IZ
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
(0
°C to 70°C; VDD=5V ± 5%)
PARAMETER
SYMBOL
MIN
TYP
MAX
UNITS
NOTES
TCLK Period
tP
±32
ppm
1
TPOS, TNEG or LPOS, LNEG
Setup Time to TCLK or LCLK
Falling
tSD
50
ns
TPOS, TNEG or LPOS, LNEG
Hold Time from TCLK or LCLK
Falling
tHD
50
ns
NOTE:
1. Necessary to meet current carrier and FCC specifications.
AC TIMING DIAGRAM Figure 5
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