AD9251 Analog Devices, AD9251 Datasheet - Page 6

• Manufacturer Part Number: AD9251
• Description: 14-Bit, 20 MSPS/40 MSPS/65 MSPS/80 MSPS, 1.8 V Dual Analog-to-Digital Converter
• Manufacturer: Analog Devices

Specifications of AD9251

• Resolution (bits): 14bit
• # Chan: 2
• Sample Rate: 80MSPS
• Interface: Par
• Analog Input Type: Diff-Uni
• Ain Range: (2Vref) p-p,2 V p-p
• Adc Architecture: Pipelined
• Pkg Type: CSP

AD9251
DIGITAL SPECIFICATIONS
AVDD = 1.8 V; DRVDD = 1.8 V, maximum sample rate, 2 V p-p differential input, 1.0 V internal reference; AIN = −1.0 dBFS,
DCS disabled, unless otherwise noted.
Table 3.
Parameter
DIFFERENTIAL CLOCK INPUTS (CLK+, CLK−)
LOGIC INPUTS (SCLK/DFS, SYNC, PDWN)
LOGIC INPUTS (CSB)
LOGIC INPUTS (SDIO/DCS)
DIGITAL OUTPUTS
1
2
Internal 30 kΩ pull-down.
Internal 30 kΩ pull-up.
Logic Compliance
Internal Common-Mode Bias
Differential Input Voltage
Input Voltage Range
High Level Input Current
Low Level Input Current
Input Resistance
Input Capacitance
High Level Input Voltage
Low Level Input Voltage
High Level Input Current
Low Level Input Current
Input Resistance
Input Capacitance
High Level Input Voltage
Low Level Input Voltage
High Level Input Current
Low Level Input Current
Input Resistance
Input Capacitance
High Level Input Voltage
Low Level Input Voltage
High Level Input Current
Low Level Input Current
Input Resistance
Input Capacitance
DRVDD = 3.3 V
DRVDD = 1.8 V
High Level Output Voltage, I
High Level Output Voltage, I
Low Level Output Voltage, I
Low Level Output Voltage, I
High Level Output Voltage, I
High Level Output Voltage, I
Low Level Output Voltage, I
Low Level Output Voltage, I
2
2
OL
OL
OL
OL
OH
OH
OH
OH
= 1.6 mA
= 50 μA
= 1.6 mA
= 50 μA
= 50 μA
= 0.5 mA
= 50 μA
= 0.5 mA
1
Temp
Full
Full
Full
Full
Full
Full
Full
Full
Full
Full
Full
Full
Full
Full
Full
Full
Full
Full
Full
Full
Full
Full
Full
Full
Full
Full
Full
Full
Full
Full
Full
Full
Full
Rev. A | Page 6 of 36
Min
0.2
GND − 0.3
−10
−10
8
1.2
0
−50
−10
1.2
0
−10
40
1.2
0
−10
40
3.29
3.25
1.79
1.75
AD9251-20/AD9251-40/AD9251-65/AD9251-80
Typ
CMOS/LVDS/LVPECL
0.9
10
4
30
2
26
2
26
5
Max
3.6
AVDD + 0.2
+10
+10
12
DRVDD + 0.3
0.8
−75
+10
DRVDD + 0.3
0.8
+10
135
DRVDD + 0.3
0.8
+10
130
0.2
0.05
0.2
0.05
Unit
V
V p-p
V
μA
μA
kΩ
pF
V
V
μA
μA
kΩ
pF
V
V
μA
μA
kΩ
pF
V
V
μA
μA
kΩ
pF
V
V
V
V
V
V
V
V