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AD6645 数据表(PDF) 2 Page - Analog Devices

部件名 AD6645
功能描述  14-Bit, 80 MSPS A/D Converter
Download  20 Pages
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制造商  AD [Analog Devices]
网页  http://www.analog.com
标志 AD - Analog Devices

AD6645 数据表(HTML) 2 Page - Analog Devices

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REV. 0
–2–
AD6645
DC SPECIFICATIONS
AD6645ASQ-80
Parameter
Temp
Test Level
Min
Typ
Max
Unit
RESOLUTION
14
Bits
ACCURACY
No Missing Codes
Full
II
Guaranteed
Offset Error
Full
II
–10
+1.2
+10
mV
Gain Error
Full
II
–10
0
+10
% FS
Differential Nonlinearity (DNL)
Full
II
–1.0
±0.25
+1.5
LSB
Integral Nonlinearity (INL)
Full
V
±0.5
LSB
TEMPERATURE DRIFT
Offset Error
Full
V
1.5
ppm/
∞C
Gain Error
Full
V
48
ppm/
∞C
POWER SUPPLY REJECTION (PSRR)
25
∞CV
±1.0
mV/V
REFERENCE OUT (VREF)
1
Full
V
2.4
V
ANALOG INPUTS (AIN,
AIN)
Differential Input Voltage Range
Full
V
2.2
V p-p
Differential Input Resistance
Full
V
1
k
W
Differential Input Capacitance
25
∞CV
1.5
pF
POWER SUPPLY
Supply Voltages
AVCC
Full
II
4.75
5.0
5.25
V
DVCC
Full
II
3.0
3.3
3.6
V
Supply Current
I AVCC (AVCC = 5.0 V)
Full
II
275
320
mA
I DVCC (DVCC = 3.3 V)
Full
II
32
45
mA
Rise Time
2
AVCC
Full
IV
TBD
ms
POWER CONSUMPTION
Full
II
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
AD6645ASQ-80
Parameter (Conditions)
Temp
Test Level
Min
Typ
Max
Unit
ENCODE INPUTS (ENC,
ENC)
Differential Input Voltage
1
Full
IV
0.4
V p-p
Differential Input Resistance
25
∞CV
10
k
W
Differential Input Capacitance
25
∞CV
2.5
pF
LOGIC OUTPUTS (D13–D0, DRY, OVR
2)
Logic Compatibility
CMOS
Logic “1” Voltage (DVCC = 3.3 V)
3
Full
II
2.85
DVCC – 0.2
V
Logic “0” Voltage (DVCC = 3.3 V)
3
Full
II
0.2
0.5
V
Output Coding
Two’s Complement
DMID
Full
V
DVCC/2
V
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: DV
CC = 3.3 V, CLOAD = 10 pF. Capacitive loads >10 pF will degrade performance.
Specifications subject to change without notice.
(AVCC = 5 V, DVCC = 3.3 V; TMIN = –40 C, TMAX = +85 C, unless otherwise noted.)
(AVCC = 5 V, DVCC = 3.3 V; TMIN = –40 C, TMAX = +85 C, unless otherwise noted.)
–SPECIFICATIONS


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