EVAL-AD7796EB View Datasheet(PDF) - Analog Devices
Part Name
Description
MFG CO.
'EVAL-AD7796EB' PDF : 24 Pages View PDF
AD7796/AD7797
Parameter
INTERNAL/EXTERNAL CLOCK
Internal Clock
Frequency2
Duty Cycle
External Clock
Frequency
Duty Cycle
LOGIC INPUTS
CS2
Input Low Voltage, VINL
Input High Voltage, VINH
SCLK, CLK, and
DIN (Schmitt-Triggered Input)2
VT(+)
VT(–)
VT(+) − VT(–)
VT(+)
VT(–)
VT(+) − VT(–)
Input Currents
Input Capacitance
LOGIC OUTPUTS (INCLUDING CLK)
Output High Voltage, VOH2
Output Low Voltage, VOL2
Floating-State Leakage Current
Floating-State Output Capacitance
Data Output Coding
SYSTEM CALIBRATION2
Full-Scale Calibration Limit
Zero-Scale Calibration Limit
Input Span
POWER REQUIREMENTS7
Power Supply Voltage
AVDD – GND
DVDD – GND
Power Supply Currents
IDD Current
IDD (Power-Down Mode)
AD7796B/AD7797B1 Unit
Test Conditions/Comments
64 ± 3%
50:50
64
45:55 to 55:45
kHz min/max
% typ
kHz nom
% typ
A 128 kHz clock can be used if the divide by 2
function is used (Bit CLK1 = CLK0 = 1)
Applies for external 64 kHz clock (a 128 kHz
clock can have a less stringent duty cycle)
0.8
0.4
2.0
1.4/2
0.8/1.7
0.1/0.17
0.9/2
0.4/1.35
0.06/0.13
±10
10
DVDD − 0.6
4
0.4
0.4
±10
10
Offset Binary
+1.05 × FS
−1.05 × FS
0.8 × FS
2.1 × FS
V max
V max
V min
DVDD = 5 V
DVDD = 3 V
DVDD = 3 V or 5 V
V min/V max
V min/V max
V min/V max
V min/V max
V min/V max
V min/V max
μA max
pF typ
V min
V min
V max
V max
μA max
pF typ
DVDD = 5 V
DVDD = 5 V
DVDD = 5 V
DVDD = 3 V
DVDD = 3 V
DVDD = 3 V
VIN = DVDD or GND
All digital inputs
DVDD = 3 V, ISOURCE = 100 μA
DVDD = 5 V, ISOURCE = 200 μA
DVDD = 3 V, ISINK = 100 μA
DVDD = 5 V, ISINK = 1.6 mA (DOUT/RDY)/800 μA (CLK)
V max
V min
V min
V max
2.7/5.25
2.7/5.25
325
1
V min/max
V min/max
μA max
μA max
250 μA typ @ AVDD = 3 V, 280 μA typ @ AVDD = 5 V
1 Temperature range is –40°C to +85°C.
2 Specification is not production tested, but is supported by characterization data at initial product release.
3 Following a calibration, this error is in the order of the noise for the update rate selected.
4 Recalibration at any temperature removes these errors.
5 Full-scale error applies to both positive and negative full-scale and applies at the factory calibration conditions (AVDD = 4 V, TA = 25°C).
6 FS[3:0] are the four bits used in the mode register to select the output word rate.
7 Digital inputs equal to DVDD or GND.
Rev. A | Page 4 of 24
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