Datasheet

AD9522-1
Rev. 0 | Page 12 of 84
CLOCK OUTPUT ADDITIVE TIME JITTER (VCO DIVIDER USED)
Table 12.
Parameter Min Typ Max Unit Test Conditions/Comments
LVDS OUTPUT ADDITIVE TIME JITTER
Distribution section only; does not include
PLL and VCO; uses rising edge of clock signal
CLK = 500 MHz; VCO DIV = 5; LVDS = 100 MHz;
Bypass Channel Divider; Duty-Cycle Correction = On
248 fs rms
Calculated from SNR of ADC method
(broadband jitter)
CMOS OUTPUT ADDITIVE TIME JITTER
Distribution section only; does not include
PLL and VCO; uses rising edge of clock signal
CLK = 200 MHz; VCO DIV = 2; CMOS = 100 MHz;
Bypass Channel Divider; Duty-Cycle Correction = Off
290 fs rms
Calculated from SNR of ADC method
(broadband jitter)
CLK = 200 MHz; VCO DIV = 1; CMOS = 100 MHz;
Bypass Channel Divider; Duty-Cycle Correction = Off
288 fs rms
Calculated from SNR of ADC method
(broadband jitter)
SERIAL CONTROL PORT—SPI MODE
Table 13.
Parameter Min Typ Max Unit Test Conditions/Comments
CS (INPUT) CS has an internal 30 kΩ pull-up resistor
Input Logic 1 Voltage 2.0 V
Input Logic 0 Voltage 0.8 V
Input Logic 1 Current 3 μA
Input Logic 0 Current −110 μA
The minus sign indicates that current is flowing out of
the AD9522, which is due to the internal pull-up resistor
Input Capacitance 2 pF
SCLK (INPUT) IN SPI MODE
SCLK has an internal 30 kΩ pull-down resistor in SPI
mode, but not in I
2
C mode
Input Logic 1 Voltage 2.0 V
Input Logic 0 Voltage 0.8 V
Input Logic 1 Current 110 μA
Input Logic 0 Current 1 μA
Input Capacitance 2 pF
SDIO (WHEN AN INPUT IN BIDIRECTIONAL MODE)
Input Logic 1 Voltage 2.0 V
Input Logic 0 Voltage 0.8 V
Input Logic 1 Current 1 μA
Input Logic 0 Current 1 μA
Input Capacitance 2 pF
SDIO, SDO (OUTPUTS)
Output Logic 1 Voltage 2.7 V
Output Logic 0 Voltage 0.4 V
TIMING
Clock Rate (SCLK, 1/t
SCLK
) 25 MHz
Pulse Width High, t
HIGH
16 ns
Pulse Width Low, t
LOW
16 ns
SDIO to SCLK Setup, t
DS
4 ns
SCLK to SDIO Hold, t
DH
0 ns
SCLK to Valid SDIO and SDO, t
DV
11 ns
CS to SCLK Setup and Hold, t
S
, t
C
2 ns
CS Minimum Pulse Width High, t
PWH
3 ns