Datasheet

ADN2817/ADN2818 Data Sheet
Rev. E | Page 4 of 40
SPECIFICATIONS
T
A
= T
MIN
to T
MAX
, VCC = V
MIN
to V
MAX
, VEE = 0 V, C
F
= 0.47 µF, SLICEP = SLICEN = VEE, input data pattern: PRBS 2
23
− 1,
unless otherwise noted.
Table 1.
Parameter Conditions Min Typ Max Unit
QUANTIZER—DC CHARACTERISTICS
Input Voltage Range At PIN or NIN, dc-coupled 1.8 2.8 V
Peak-to-Peak Differential Input PIN − NIN 2.0 V
Input Common-Mode Level DC-coupled (see Figure 40, Figure 41, and Figure 42) 2.3 2.5 2.8 V
Differential Input Sensitivity 2
23
− 1 PRBS, ac-coupled,
1
BER = 1 × 10
−10
ADN2817 10 5 mV p-p
ADN2818 200 mV p-p
QUANTIZER—AC CHARACTERISTICS
Data Rate
10
2700
Mbps
S11 At 2.5 GHz −15 dB
Input Resistance Differential 100 Ω
Input Capacitance 0.65 pF
QUANTIZER—SLICE ADJUSTMENT ADN2817 only
Gain SLICEP − SLICEN = ±0.5 V 0.10 0.11 0.13 V/V
Differential Control Voltage Input SLICEP − SLICEN −0.95 +0.95 V
Control Voltage Range DC level @ SLICEP or SLICEN VEE 0.95 V
Slice Threshold Offset ±1 mV
LOSS OF SIGNAL DETECT (LOS) ADN2817 only
Loss of Signal Detect Range (See Figure 6) R
Thresh
= 0 Ω 14.2 20.0 mV
R
Thresh
= 100 kΩ 2.1 5.0 mV
Hysteresis (Electrical)
OC-48 R
Thresh
= 0 Ω 6.2 8.2 dB
R
Thresh
= 100 kΩ 4.7 7.7 dB
OC-1 R
Thresh
= 0 Ω 4.9 7.5 dB
R
Thresh
= 10 kΩ 3.0 7.3 dB
LOS Assert Time
DC-coupled
2
450
ns
LOS Deassert Time DC-coupled
2
500 ns
LOSS OF LOCK DETECT (LOL)
VCO Frequency Error for LOL Assert
With respect to nominal
1000
ppm
VCO Frequency Error for LOL Deassert With respect to nominal 250 ppm
LOL Response Time
OC-48 1.0 µs
OC-12 1.0 µs
10 Mbps 500 µs
ACQUISITION TIME
Lock to Data Mode
OC-48 1.3 ms
OC-12 2.0 ms
OC-3 3.4 ms
OC-1 9.8 ms
10 Mbps 40.0 ms
Optional Lock to REFCLK Mode 10.0 ms
DATA RATE READBACK ACCURACY
Coarse Readback See Table 19 10 %
Fine Readback In addition to REFCLK accuracy 100 ppm