Datasheet

ADS4122, ADS4125
ADS4142, ADS4145
www.ti.com SBAS520A –FEBRUARY 2011– REVISED MARCH 2011
ABSOLUTE MAXIMUM RATINGS
(1)
Over operating free-air temperature range, unless otherwise noted.
VALUE UNIT
Supply voltage range, AVDD –0.3 to 2.1 V
Supply voltage range, DRVDD –0.3 to 2.1 V
Voltage between AGND and DRGND –0.3 to 0.3 V
Voltage between AVDD to DRVDD (when AVDD leads DRVDD) 0 to 2.1 V
Voltage between DRVDD to AVDD (when DRVDD leads AVDD) 0 to 2.1 V
INP, INM –0.3 to minimum (1.9, AVDD + 0.3) V
Voltage applied to input pins CLKP, CLKM
(2)
, DFS, OE –0.3 to AVDD + 0.3 V
RESET, SCLK, SDATA, SEN –0.3 to 3.9 V
Operating free-air temperature range, T
A
–40 to +85 °C
Operating junction temperature range, T
J
+125 °C
Storage temperature range, T
STG
–65 to +150 °C
ESD, human body model (HBM) 2 kV
(1) Stresses above these ratings may cause permanent damage. Exposure to absolute maximum conditions for extended periods may
degrade device reliability. These are stress ratings only, and functional operation of the device at these or any other conditions beyond
those specified is not implied.
(2) When AVDD is turned off, it is recommended to switch off the input clock (or ensure the voltage on CLKP, CLKM is less than |0.3V|.
This prevents the ESD protection diodes at the clock input pins from turning on.
THERMAL INFORMATION
ADS4122/25/42/45
THERMAL METRIC
(1)
RGZ UNITS
48 PINS
θ
JA
Junction-to-ambient thermal resistance 29
θ
JCtop
Junction-to-case (top) thermal resistance n/a
θ
JB
Junction-to-board thermal resistance 10
°C/W
ψ
JT
Junction-to-top characterization parameter 0.3
ψ
JB
Junction-to-board characterization parameter 9
θ
JCbot
Junction-to-case (bottom) thermal resistance 1.1
(1) For more information about traditional and new thermal metrics, see the IC Package Thermal Metrics application report, SPRA953.
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