AD6644ST/PCB(Rev0) View Datasheet(PDF) - Analog Devices
Part Name
Description
Manufacturer
AD6644ST/PCB Datasheet PDF : 19 Pages
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AD6644–SPECIFICATIONS
DC SPECIFICATIONS (AVCC = 5 V, DVCC = 3.3 V; TMIN = –25؇C, TMAX = +85؇C)
Parameter
Test
Temp Level
AD6644AST-40
Min
Typ
Max
AD6644AST-65
Min
Typ
Max
RESOLUTION
14
14
ACCURACY
No Missing Codes
Offset Error
Gain Error
Differential Nonlinearity (DNL)
Integral Nonlinearity (INL)
Full II
Full II
Full II
Full II
Full V
Guaranteed
–10
3
+10
–10
–6
+10
–1.0
± 0.25 +1.5
± 0.50
Guaranteed
–10
3
+10
–10
–6
+10
–1.0
± 0.25 +1.5
± 0.50
TEMPERATURE DRIFT
Offset Error
Full V
10
10
Gain Error
Full V
95
95
POWER SUPPLY REJECTION (PSRR) Full V
± 1.0
± 1.0
REFERENCE OUT (VREF)
Full V
2.4
2.4
ANALOG INPUTS (AIN, AIN)
Differential Input Voltage Range
Full V
2.2
2.2
Differential Input Resistance
Full V
1
1
Differential Input Capacitance
25°C V
1.5
1.5
POWER SUPPLY
Supply Voltage
AVCC1
DVCC
Supply Current
IAVCC (AVCC = 5.0 V)
IDVCC (DVCC = 3.3 V)
Full II
Full II
Full II
Full II
4.85
5.0
5.25
4.85
5.0
5.25
3.0
3.3
3.6
3.0
3.3
3.6
245
276
30
36
245
276
30
36
POWER CONSUMPTION
Full II
1.3
1.5
1.3
1.5
NOTES
1AVCC may be varied from 4.85 V to 5.25 V. However, rated ac (harmonics) performance is valid only over the range AVCC = 5.0 V to 5.25 V.
Specifications subject to change without notice.
Unit
Bits
mV
% FS
LSB
LSB
ppm/°C
ppm/°C
mV/V
V
V p-p
kΩ
pF
V
V
mA
mA
W
DIGITAL SPECIFICATIONS (AVCC = 5 V, DVCC = 3.3 V; TMIN = –25؇C, TMAX = +85؇C)
Parameter
ENCODE INPUTS (ENC, ENC)
Differential Input Voltage1
Differential Input Resistance
Differential Input Capacitance
Test
Temp Level
AD6644AST-40
Min
Typ
Max
Full IV
0.4
25°C V
10
25°C V
2.5
AD6644AST-65
Min
Typ
Max
0.4
10
2.5
LOGIC OUTPUTS (D13–D0, DRY, OVR)
Logic Compatibility
Logic “1” Voltage2
Logic “0” Voltage2
Full V
Full V
CMOS
2.5
0.4
CMOS
2.5
0.4
Output Coding
Two’s Complement
Two’s Complement
DMID
Full V
DVCC/2
DVCC/2
NOTES
1All ac specifications tested by driving ENCODE and ENCODE differentially. Reference Figure 22 for performance versus encode power.
2Digital 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
kΩ
pF
V
V
V
SWITCHING SPECIFICATIONS (AVCC = 5 V, DVCC = 3.3 V; ENCODE and ENCODE = Maximum Conversion Rate MSPS; TMIN =
–25؇C, TMAX = +85؇C)
Parameter
Maximum Conversion Rate
Minimum Conversion Rate
ENCODE Pulsewidth High
ENCODE Pulsewidth Low
Temp
Full
Full
Full
Full
Test
Level
II
IV
IV
IV
AD6644AST-40
Min
Typ
Max
40
15
10
10
AD6644AST-65
Min
Typ Max
65
15
6.5
6.5
Unit
MSPS
MSPS
ns
ns
Specifications subject to change without notice.
–2–
REV. 0
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