AD6645(Rev0) Ver la hoja de datos (PDF) - Analog Devices
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AD6645 Datasheet PDF : 20 Pages
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AD6645–SPECIFICATIONS
DC SPECIFICATIONS (AVCC = 5 V, DVCC = 3.3 V; TMIN = –40؇C, TMAX = +85؇C, unless otherwise noted.)
Parameter
Temp Test Level Min
AD6645ASQ-80
Typ
Max Unit
RESOLUTION
14
Bits
ACCURACY
No Missing Codes
Full
II
Offset Error
Full
II
–10
Gain Error
Full
II
–10
Differential Nonlinearity (DNL)
Full
II
–1.0
Integral Nonlinearity (INL)
Full
V
TEMPERATURE DRIFT
Offset Error
Gain Error
Full
V
Full
V
POWER SUPPLY REJECTION (PSRR) 25∞C V
REFERENCE OUT (VREF)1
Full
V
ANALOG INPUTS (AIN, AIN)
Differential Input Voltage Range
Differential Input Resistance
Differential Input Capacitance
Full
V
Full
V
25∞C V
POWER SUPPLY
Supply Voltages
AVCC
DVCC
Supply Current
I AVCC (AVCC = 5.0 V)
I DVCC (DVCC = 3.3 V)
Rise Time2
AVCC
POWER CONSUMPTION
Full
II
4.75
Full
II
3.0
Full
II
Full
II
Full
IV
Full
II
Guaranteed
+1.2
0
± 0.25
± 0.5
1.5
48
± 1.0
2.4
2.2
1
1.5
+10 mV
+10 % FS
+1.5 LSB
LSB
ppm/∞C
ppm/∞C
mV/V
V
V p-p
kW
pF
5.0
5.25 V
3.3
3.6 V
275
320 mA
32
45
mA
TBD ms
1.5
1.75 W
NOTES
1VREF is provided for setting the common-mode offset of a differential amplifier such as the AD8138 when a dc-coupled analog input is required. VREF should be
buffered if used to drive additional circuit functions.
2Specified for dc supplies with linear rise-time characteristics. The use of dc supplies with linear rise-times of <45 ms is highly recommended.
Specifications subject to change without notice
DIGITAL SPECIFICATIONS (AVCC = 5 V, DVCC = 3.3 V; TMIN = –40؇C, TMAX = +85؇C, unless otherwise noted.)
Parameter (Conditions)
AD6645ASQ-80
Temp Test Level Min
Typ
Max
ENCODE INPUTS (ENC, ENC)
Differential Input Voltage1
Full
IV
0.4
Differential Input Resistance
25∞C V
10
Differential Input Capacitance
25∞C V
2.5
LOGIC OUTPUTS (D13–D0, DRY, OVR2)
Logic Compatibility
Logic “1” Voltage (DVCC = 3.3 V)3
Full
II
2.85
Logic “0” Voltage (DVCC = 3.3 V)3
Full
II
Output Coding
DMID
Full
V
CMOS
DVCC – 0.2
0.2
0.5
Two’s Complement
DVCC /2
NOTES
1All ac specifications tested by driving ENCODE and ENCODE differentially.
2The functionality of the Over-Range bit is specified for a temperature range of 25 ∞C to 85∞C only.
3Digital output logic levels: DVCC = 3.3 V, CLOAD = 10 pF. Capacitive loads >10 pF will degrade performance.
Specifications subject to change without notice.
Unit
V p-p
kW
pF
V
V
V
–2–
REV. 0
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