ADS1291
ADS1292
ADS1292R
SBAS502A –DECEMBER 2011–REVISED MARCH 2012
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ELECTRICAL CHARACTERISTICS (continued)
Minimum and maximum specifications apply from –40°C to +85°C. Typical specifications are at +25°C. All specifications are
at DVDD = 1.8 V, AVDD – AVSS = 3 V(1), VREF = 2.42 V, external fCLK = 512 kHz, data rate = 500 SPS, CFILTER = 4.7 nF(2)
,
and gain = 6, unless otherwise noted.
ADS1291, ADS1292, ADS1292R
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
SUPPLY CURRENT (RLD Amplifier Turned Off)
AVDD – AVSS = 3 V
205
250
75
μA
μA
μA
μA
IAVDD
AVDD – AVSS = 5 V
DVDD = 3.3 V
Normal mode
IDVDD
DVDD = 1.8 V
32
POWER DISSIPATION (Analog Supply = 3 V, RLD Amplifier Turned Off)
Normal mode
ADS1292 and
670
160
450
160
335
335
450
740
495
µW
µW
µW
µW
µW
µW
µW
ADS1292R
Standby mode
Quiescent power
dissipation
Normal mode
ADS1291
Standby mode
ADS1292R
ADS1292
ADS1291
Normal mode
Normal mode
Normal mode
Quiescent power
dissipation, per
channel
POWER DISSIPATION (Analog Supply = 5 V, RLD Amplifier Turned Off)
Normal mode
ADS1292 and
1300
340
950
340
670
670
860
µW
µW
µW
µW
µW
µW
µW
ADS1292R
Standby mode
Quiescent power
dissipation
Normal mode
ADS1291
Standby mode
ADS1292R
ADS1292
ADS1291
Normal mode
Normal mode
Normal mode
Quiescent power
dissipation, per
channel
POWER DISSIPATION IN POWER-DOWN MODE
DVDD = 1.8 V
Analog supply = 3 V
1
4
µW
µW
µW
µW
DVDD = 3.3 V
DVDD = 1.8 V
Analog supply = 5 V
5
DVDD = 3.3 V
10
TEMPERATURE
Specified temperature range
Operating temperature range
Storage temperature range
–40
–40
–60
+85
+85
°C
°C
°C
+150
THERMAL INFORMATION
ADS1291,
ADS1292,
ADS1292R
THERMAL METRIC(1)
UNITS
PBS (TQFP)
32 PINS
68.4
θJA
Junction-to-ambient thermal resistance
θJCtop
θJB
Junction-to-case (top) thermal resistance
Junction-to-board thermal resistance
25.9
30.5
°C/W
ψJT
Junction-to-top characterization parameter
Junction-to-board characterization parameter
Junction-to-case (bottom) thermal resistance
0.5
ψJB
24.3
θJCbot
n/a
(1) For more information about traditional and new thermal metrics, see the IC Package Thermal Metrics application report, SPRA953.
6
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