Datasheet

AD7626 Data Sheet
Rev. B | Page 4 of 28
Parameter Test Conditions/Comments Min Typ Max Unit
REFERENCE BUFFER
REFIN Input Voltage Range 1.18 1.2 1.22 V
REF Output Voltage Range REF @ 25°C, EN0 = EN1 = 1 4.076 4.096 4.116 V
Line Regulation VDD1 ± 5%, VDD2 ± 5% 5 mV
EXTERNAL REFERENCE
Voltage Range REF 4.096 V
VCM PIN
VCM Output REF/2
VCM Error −0.015 +0.015 V
Output Impedance 5 kΩ
LVDS I/O (ANSI-644)
Data Format Serial LVDS twos complement
Differential Output Voltage, V
OD
R
L
= 100 Ω 245 290 454 mV
Common-Mode Output Voltage, V
OCM
R
L
= 100 Ω 980
2
1130 1375 mV
Differential Input Voltage, V
ID
100 650 mV
Common-Mode Input Voltage, V
ICM
800 1575 mV
POWER SUPPLIES
Specified Performance
VDD1 4.75 5 5.25 V
VDD2 2.37 2.5 2.63 V
VIO 2.37 2.5 2.63 V
Operating Currents
Static—Not Converting
VDD1 3.5 4.5 mA
VDD2 16.7 21.2 mA
VIO 11.6 13.5 mA
With Internal Reference 10 MSPS throughput
VDD1 10.4 11.2 mA
VDD2 23.5 27.8 mA
VIO Echoed-clock mode 15.8 17.8 mA
With External Reference 10 MSPS throughput
VDD1 7.5 8.8 mA
VDD2 23 28 mA
VIO Echoed-clock mode 16.4 18.5 mA
Power-Down EN0 = 0, EN1 = 0
VDD1 0.6 4 µA
VDD2 0.8 10 µA
VIO 1 5 µA
Power Dissipation
3
Static—Not Converting 88 107 mW
With Internal Reference 10 MSPS throughput 150 170 mW
With External Reference 10 MSPS throughput 136 160 mW
Power-Down 8 58 µW
Energy per Conversion
10 MSPS throughput
13.6
nJ/sample
TEMPERATURE RANGE
Specified Performance T
MIN
to T
MAX
−40 +85 °C
1
Using an external reference.
2
The ANSI-644 LVDS specification has a minimum output common mode (V
OCM
) of 1125 mV.
3
Power dissipation is for the AD7626 device only. In self-clocked interface mode, 0.9 mW is dissipated in the 100 Ω terminator. In echoed-clock interface mode, 1.8 mW
is dissipated in two 100 Ω terminators.