AD7895AN-10 Ver la hoja de datos (PDF) - Analog Devices
Número de pieza
componentes Descripción
Fabricante
AD7895AN-10 Datasheet PDF : 12 Pages
| |||
AD7895–SPECIFICATIONS (VDD= +5 V, GND = 0 V, REF IN = +2.5 V.
All specifications TMIN to TMAX unless otherwise noted)
Parameter
A Versionsl B Versions
Units
Test Conditions/Comments
DYNAMIC PERFORMANCE2
Signal to (Noise + Distortion) Ratio3
@ +25°C
70
70
TMIN to TMAX
70
70
Total Harmonic Distortion (THD)3
–78
–78
Peak Harmonic or Spurious Noise3
–89
–89
Intermodulation Distortion (IMD)3
2nd Order Terms
–87
–87
3rd Order Terms
–87
–87
dB min
dB min
dB max
dB typ
dB typ
dB typ
fIN = 50 kHz Sine Wave, fSAMPLE = 200 kHz
fIN = 50 kHz Sine Wave, fSAMPLE = 200 kHz,
Typically –87 dB
fIN = 50 kHz Sine Wave, fSAMPLE = 200 kHz
fa = 9 kHz, fb = 9.5 kHz, fSAMPLE = 200 kHz
DC ACCURACY
Resolution
12
12
Minimum Resolution for which
No Missing Codes are Guaranteed
12
12
Relative Accuracy3
±1
±1
Differential Nonlinearity3
±1
±1
Positive Full-Scale Error3
±3
±2
AD7895-2
Unipolar Offset Error
±3
±2
AD7895-10, AD7895-3 Only
Negative Full-Scale Error3
±3
±2
Bipolar Zero Error
±4
±3
Bits
Bits
LSB max
LSB max
LSB max
LSB max
LSB max
LSB max
Typically 0.4 LSB
ANALOG INPUT
AD7895-10
Input Voltage Range
Input Resistance
AD7895-3
Input Voltage Range
Input Resistance
AD7895-2
Input Voltage Range
Input Current
± 10
24
± 2.5
9
0 to +2.5
500
± 10
24
± 2.5
9
0 to +2.5
500
Volts
kΩ min
Volts
kΩ min
Volts
nA max
REFERENCE INPUT
REF IN Input Voltage Range
Input Current
Input Capacitance3
2.375/2.625
1
10
2.375/2.625
1
10
V min/V max
µA max
pF max
2.5 V ± 5%
LOGIC INPUTS
Input High Voltage, VINH
Input Low Voltage, VINL
Input Current, IIN
Input Capacitance, CIN4
LOGIC OUTPUTS
Output High Voltage, VOH
Output Low Voltage, VOL
Output Coding
AD7895-10, AD7895-3
AD7895-2
2.4
2.4
0.8
0.8
± 10
± 10
10
10
4.0
4.0
0.4
0.4
2s Complement
Straight (Natural) Binary
V min
V max
µA max
pF ax
V min
V max
VDD = 5 V ± 5%
VDD = 5 V ± 5%
VIN = 0 V to VDD
ISOURCE = 200 µA
ISINK = 1.6 mA
CONVERSION RATE
Conversion Time
Mode 1 Operation
3.8
3.8
Mode 2 Operation5
9.8
9.8
Track/Hold Acquisition Time3
0.5
0.5
µs max
µs max
µs max
POWER REQUIREMENTS
VDD
IDD
Power Dissipation
+5
+5
4
4
20
20
V nom
mA max
mW max
± 5% for Specified Performance
Digital Inputs @ VDD, VDD = 5 V ± 5%
Typically 16 mW
Power-Down Mode
IDD @ +25°C
TMIN to TMAX
Power Dissipation @ +25°C
5
5
10
10
25
25
µA max
µA max
µW max
Digital Inputs @ GND, VDD = 5 V ± 5%
Digital Inputs @ GND, VDD = 5 V ± 5%
NOTES
1Temperature ranges are as follows: A, B Versions: –40°C to +85°C.
2Applies to Mode 1 operation. See section on “Operating Modes.”
3See Terminology.
4Sample tested @ +25°C to ensure compliance.
5This 9.8 µs includes the “wake-up” time from standby. This “wake-up” time is timed from the rising edge of CONVST, whereas conversion is timed from the falling edge of CONVST, for
narrow CONVST pulse width the conversion time is effectively the “wake-up” time plus conversion time hence 9.8 µs. This can be seen from Figure 3. Note that if the CONVST pulse width
is greater than 6 µs then the effective conversion time will increase beyond 9.8 µs.
Specifications subject to change without notice.
–2–
REV. 0
Share Link: 