KDC2708CEVAL Intersil, KDC2708CEVAL Datasheet - Page 14

• Manufacturer Part Number: KDC2708CEVAL
• Description: DAUGHTER CARD FOR KAD2708
• Manufacturer: Intersil
• Series: FemtoCharge™r

Specifications of KDC2708CEVAL

• Number Of Adc's: 1
• Number Of Bits: 8
• Sampling Rate (per Second): 275M
• Data Interface: Parallel
• Inputs Per Adc: 1 Differential
• Input Range: 1.5 Vpp
• Power (typ) @ Conditions: 261mW @ 275MSPS
• Voltage Supply Source: Single Supply
• Operating Temperature: -40°C ~ 85°C
• Utilized Ic / Part: KAD2708C-27, KMB001 Motherboard
• For Use With: KMB001LEVAL - MOTHERBOARD FOR LVDS ADC CARD
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

INP
INN
Equivalent Circuits
10 0
9 5
9 0
8 5
8 0
7 5
7 0
6 5
6 0
5 5
5 0
1
AVDD3
AVDD3
FIGURE 27. SNR vs CLOCK JITTER
tj=1 00 ps
FIGURE 28. ANALOG INPUTS
2pF
2pF
1 0
In put Fr equen cy - MH z
Φ
F 1
Φ
F 1
tj=10 p s
14
Φ
Φ
F 2
F 2
tj=1 ps
tj=0.1 ps
1 00
DATA
Csamp
Csamp
0.3pF
0.3pF
FIGURE 30. LVCMOS OUTPUT
1 0 Bits
14 Bits
12 Bits
Pipeline
Pipeline
Charge
Charge
OVDD
To
To
KAD2708C
1 00 0
OVDD
Any internal aperture jitter combines with the input clock
jitter, in a root-sum-square fashion since they are not
statistically correlated, and this determines the total jitter in
the system. The total jitter, combined with other noise
sources, then determines the achievable SNR.
Digital Outputs
Data is output on a parallel bus with LVDS-compatible
drivers.
The output format (Binary or Two’s Complement) is selected
via the 2SC pin as shown in Table 3.
CLKN
CLKP
D[9:0]
AVDD2
AVDD2
2SC PIN
AVDD
AVSS
TABLE 3. 2SC PIN SETTINGS
FIGURE 29. CLOCK INPUTS
Two’s Complement
AVDD2
MODE
Binary
April 14, 2011
Generation
To Clock
FN6812.1