AD9148
Data Sheet
Rev. B | Page 6 of 72
INPUT/OUTPUT SIGNAL SPECIFICATIONS
TMIN to TMAX, AVDD33 = 3.3 V, IOVDD = 3.3 V, DVDD18 = 1.8 V, CVDD18 = 1.8 V, IOUTFS = 20 mA, maximum sample rate, unless
otherwise noted. LVDS driver and receiver are compliant to the IEEE-1596 reduced range link, unless otherwise noted.
Table 2.
Parameter
Min
Typ
Max
Unit
CMOS INPUT LOGIC LEVEL (SCLK, SDIO, CS, RESET, TMS, TDI, TCK)
Input VIN Logic High (IOVDD = 1.8 V)
1.2
V
Input VIN Logic High (IOVDD = 3.3 V)
2.0
V
Input VIN Logic Low (IOVDD = 1.8 V)
0.6
V
Input VIN Logic Low (IOVDD = 3.3 V)
0.8
V
CMOS OUTPUT LOGIC LEVEL (SDIO, SDO, IRQ, PLL_LOCK, TDO)
Output VOUT Logic High (IOVDD = 1.8 V)
1.4
V
Output VOUT Logic High (IOVDD = 3.3 V)
2.4
V
Output VOUT Logic Low (IOVDD = 1.8 V)
0.4
V
Output VOUT Logic Low (IOVDD = 3.3 V)
0.4
V
LVDS RECEIVER INPUTS (A[15:0]_x, B[15:0]_x, DCIA_x, DCIB_x)
Input Voltage Range, VIA or VIB
825
1575
mV
Input Differential Threshold, VIDTH
100
+100
mV
Input Differential Hysteresis, VIDTHH to VIDTHL
20
mV
Receiver Differential Input Impedance, RIN
80
120
Ω
1200
MSPS
LVDS RECEIVER INPUTS (FRAMEA_x, FRAMEB_x)
Input Voltage Range, VIA or VIB
825
1575
mV
DAC CLOCK INPUT (CLK_P, CLK_N)
Differential Peak-to-Peak Voltage
100
500
2000
mV
Common-Mode Voltage (Self-Biasing, AC-Coupled)
1.25
V
Maximum Clock Rate
1000
MSPS
REFERENCE CLOCK INPUT (REFCLK_x/SYNC_x)
Differential Peak-to-Peak Voltage
100
500
2000
mV
Common-Mode Voltage (Self-Biasing, AC-Coupled)
1.25
V
Maximum Clock Rate
500
MSPS
Minimum Clock Rate (PLL Enabled)
Loop Divider = /2
125
MSPS
Loop Divider = /4
62.5
MSPS
Loop Divider = /8
31.25
MSPS
Loop Divider = /16
15.625
MSPS
SERIAL PERIPHERAL INTERFACE
Maximum Clock Rate (SCLK)
40
MHz
Minimum Pulse Width High (tPWH)
12.5
ns
Minimum Pulse Width Low (tPWL)
12.5
ns
Set-Up Time, SDI to SCLK (tDS)
1.9
ns
Hold Time, SDI to SCLK (tDH)
0.2
ns
Data Valid, SDO to SCLK (tDV)
23
ns
Setup time, CS to SCLK (tDCSB)
1.4
ns