AD7718BR Analog Devices Inc, AD7718BR Datasheet - Page 3

• Manufacturer Part Number: AD7718BR
• Description: A/D Converter (A-D) IC
• Manufacturer: Analog Devices Inc

Specifications of AD7718BR

• Peak Reflow Compatible (260 C): No
• No. Of Bits: 24 Bit
• Leaded Process Compatible: No
• Mounting Type: Surface Mount
• Features: Analog Front End For Low Frequency Measurement
• No. Of Channels: 10
• Rohs Status: RoHS non-compliant
• Number Of Bits: 24
• Sampling Rate (per Second): 1.37k
• Data Interface: DSP, MICROWIRE™, QSPI™, Serial, SPI™
• Number Of Converters: 1
• Power Dissipation (max): 3.84mW
• Voltage Supply Source: Analog and Digital
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 28-SOIC (0.300", 7.50mm Width)
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• For Use With: EVAL-AD7718EBZ - BOARD EVALUATION FOR AD7718
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

AD7718 SPECIFICATIONS
REFIN(+) = 2.5 V; REFIN(–) = AGND; AGND = DGND = 0 V; XTAL1/XTAL2 = 32.768 kHz Crystal Input Buffer Enabled. All specifications T
T
Parameter
AD7718 (CHOP DISABLED)
ANALOG INPUTS
REFERENCE INPUTS (REFIN1 AND REFIN2)
MAX
Output Update Rate
No Missing Codes
Resolution
Output Noise and Update Rates
Integral Nonlinearity
Offset Error
Offset Error Drift vs. Temp
Full-Scale Error
Gain Drift vs. Temp
Negative Full-Scale Error
Differential Input Full-Scale Voltage
Absolute AIN Voltage Limits
Absolute AINCOM Voltage Limits
Analog Input Current
AINCOM Input Current
Normal-Mode Rejection
Common-Mode Rejection
REFIN(+) to REFIN(–) Voltage
REFIN(+) to REFIN(–) Range
REFIN Common-Mode Range
Reference DC Input Current
Reference DC Input Current Drift
Normal-Mode Rejection
Common-Mode Rejection
unless otherwise noted.)
DC Input Current
DC Bias Current Drift
DC Input Current
DC Bias Current Drift
@ 50 Hz
@ 60 Hz
@ DC
@ 50 Hz
@ 60 Hz
@ 50 Hz
@ 60 Hz
@ DC
@ 50 Hz
@ 60 Hz
3
3
2
4
2
2
2
2
4
2
B Grade
16.06
1.365
24
13
18
See Tables in
ADC Description
± 10
Table VII
± 200
± 10
± 0.5
± 0.003
± 1.024 × REFIN/GAIN V nom
AGND + 100 mV
AV
AGND – 30 mV
AV
± 1
± 5
± 125
± 2
100
100
90
100
100
2.5
1
AV
AGND – 30 mV
AV
0.5
± 0.1
100
100
100
100
100
1
DD
DD
DD
DD
(AV
– 100 mV
+ 30 mV
+ 30 mV
DD
= 2.7 V to 3.6 V or 4.75 V to 5.25 V, DV
Unit
Hz min
kHz max
Bits min
Bits p-p
Bits p-p
ppm of FSR max
µV typ
nV/°C typ
µV typ
ppm/°C typ
% FSR max
V min
V max
V min
V max
nA max
pA/°C typ
nA/V typ
pA/V/°C typ
dB min
dB min
dB min
dB typ
dB typ
V nom
V min
V max
V min
V max
µA/V typ
nA/V/°C typ
dB min
dB min
dB typ
dB typ
dB typ
Test Conditions
CHOP = 1
± 20 mV Range, SF = 69
± 2.56 V Range, SF = 69
2 ppm Typical
Offset Error is in the order of the noise for the
programmed gain and update rate following a
calibration
REFIN Refers to Both REFIN1 and
REFIN2. REFIN = REFIN(+) –REFIN(–)
GAIN = 1 to 128
AIN1–AIN10 and AINCOM with
NEGBUF = 1
NEGBUF = 0
AIN1–AIN10 and AINCOM with NEGBUF = 1
NEGBUF = 0
± 2.56 V Range
50 Hz ± 1 Hz, SF Word = 82
60 Hz ± 1 Hz, SF Word = 68
100 dB typ, Analog Input = 1 V,
Input Range = ± 2.56 V
110 dB typ on ± 20 mV Range
50 Hz ± 1 Hz, SF Word = 82
60 Hz ± 1 Hz, SF Word = 68
REFIN Refers to Both REFIN1 and REFIN2
50 Hz ± 1 Hz, SF Word = 82
60 Hz ± 1 Hz, SF Word = 68
Input Range = ± 2.56 V
Analog Input = 1 V. Input Range = ± 2.56 V
DD
= 2.7 V to 3.6 V or 4.75 V to 5.25 V,
AD7708/AD7718
MIN
to