ADS1208
www.ti.com
SBAS348A–MARCH 2005–REVISED MARCH 2005
ELECTRICAL CHARACTERISTICS (continued)
Over recommended operating free-air temperature range at –40°C to +85°C, AVDD = BVDD = +5V, VREF = internal +2.5V,
Mode 3, MCLK input = 20MHz, differential input voltage = 200mVPP, common-mode voltage = 1.4V, and 16-bit Sinc3 filter with
OSR = 256, unless otherwise noted.
ADS1208I
PARAMETER
AC Accuracy
SNR
TEST CONDITIONS
MIN
TYP(1)
MAX
UNIT
VIN = 200mVPP at 1kHz
VIN = 200mVPP at 1kHz
VIN = 200mVPP at 1kHz
VIN = 200mVPP at 1kHz
80
77
82
81.5
–91
93
dB
dB
dB
dB
SINAD
THD
–80
SFDR
80
Digital Inputs(6)
Logic family
CMOS
VIH
VIL
IIN
High-level input voltage
0.7 x BVDD
–0.3
BVDD + 0.3
0.3 x BVDD
50
V
V
Low-level input voltage
Input current
VIN = BVDD or GND
–50
nA
pF
CI
Input capacitance
5
Digital Outputs(6)
Logic family
CMOS
VOH
VOL
CL
High-level output voltage
BVDD = 4.5V, IOH = –100µA
BVDD = 4.5V, IOL = +100µA
4.44
V
V
Low-level output voltage
Load capacitance
0.5
30
pF
Data format
Digital Inputs(7)
Bit stream
LVCMOS
Logic family
VIH
VIL
IIN
High-level input voltage
BVDD = 3.6V
BVDD = 2.7V
2
–0.3
–50
BVDD + 0.3
V
V
Low-level input voltage
Input current
0.8
50
VIN = BVDD or GND
nA
pF
CI
Input capacitance
5
Digital Outputs(7)
Logic family
LVCMOS
VOH
VOL
CL
High-level output voltage
BVDD = 2.7, IOH = –100µA
BVDD = 2.7, IOL = +100µA
BVDD – 0.2
V
V
Low-level output voltage
Load capacitance
0.2
30
pF
Data format
Bit stream
Power Supply
Analog supply voltage, AVDD
Digital interface supply voltage, BVDD
Operating supply current, AIDD
Operating supply current, AIDD
Operating supply current, BIDD
Operating supply current, BIDD
Power dissipation
4.5
2.7
5.0
5
5.5
5.5
V
V
Modes 0, 1 and 2
Mode 3
11.9
11.5
2.3
1.3
71
15.0
14.5
3.0
mA
mA
mA
mA
mW
mW
Modes 0, 1 and 2
Mode 3
2.0
Modes 0, 1 and 2
Mode 3
90
Power dissipation
64
82.5
(6) Applicable for 5.0V nominal supply; BVDD (min) = 4.5V and BVDD (max) = 5.5V.
(7) Applicable for 3.0V nominal supply; BVDD (min) = 2.7V and BVDD (max) = 3.6V
4
BB [ BURR-BROWN CORPORATION ]
