Datasheet
ADS41B29
ADS41B49
SBAS486E – NOVEMBER 2009–REVISED JULY 2012
www.ti.com
DIGITAL CHARACTERISTICS
Typical values are at +25°C, AVDD = 1.8V, AVDD_BUF = 3.3V, and DRVDD = 1.8V, unless otherwise noted. Minimum and
maximum values are across the full temperature range: T
MIN
= –40°C to T
MAX
= +85°C, AVDD = 1.8V, AVDD_BUF = 3.3V,
and DRVDD = 1.8V.
ADS41B29, ADS41B49
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
DIGITAL INPUTS (RESET, SCLK, SDATA, SEN, OE)
High-level input voltage RESET, SCLK, SDATA, and 1.3 V
SEN support 1.8V and 3.3V
Low-level input voltage 0.4 V
CMOS logic levels
High-level input voltage 1.3 V
OE only supports 1.8V CMOS
logic levels
Low-level input voltage 0.4 V
High-level input current: SDATA, SCLK
(1)
V
HIGH
= 1.8V 10 µA
High-level input current: SEN
(2)
V
HIGH
= 1.8V 0 µA
Low-level input current: SDATA, SCLK V
LOW
= 0V 0 µA
Low-level input current: SEN V
LOW
= 0V –10 µA
DIGITAL OUTPUTS (CMOS INTERFACE: D0 TO D13, OVR_SDOUT)
High-level output voltage DRVDD – 0.1 DRVDD V
Low-level output voltage 0 0.1 V
DIGITAL OUTPUTS (LVDS INTERFACE: D0_D1_P/M to D12_D13_P/M, CLKOUTP/M)
High-level output voltage
(3)
V
ODH
Standard swing LVDS 270 +350 430 mV
Low-level output voltage
(3)
V
ODL
Standard swing LVDS –430 –350 –270 mV
High-level output voltage
(3)
V
ODH
Low swing LVDS +200 mV
Low-level output voltage
(3)
V
ODL
Low swing LVDS –200 mV
Output common-mode voltage V
OCM
0.85 1.05 1.25 V
(1) SDATA and SCLK have an internal 180kΩ pull-down resistor.
(2) SEN has an internal 180kΩ pull-up resistor to AVDD.
(3) With an external 100Ω termination.
THERMAL INFORMATION
ADS41B29,
ADS41B49
THERMAL METRIC
(1)
UNITS
RGZ
48 PINS
θ
JA
Junction-to-ambient thermal resistance 27.9
θ
JCtop
Junction-to-case (top) thermal resistance 15.1
θ
JB
Junction-to-board thermal resistance 5.4
°C/W
ψ
JT
Junction-to-top characterization parameter 0.3
ψ
JB
Junction-to-board characterization parameter 5.4
θ
JCbot
Junction-to-case (bottom) thermal resistance 1.7
(1) For more information about traditional and new thermal metrics, see the IC Package Thermal Metrics application report, SPRA953.
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Product Folder Link(s): ADS41B29 ADS41B49