AD7883 データシートの表示（PDF） - Analog Devices
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AD7883 Datasheet PDF : 12 Pages
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AD7883–SPECIFICATIONS (VDD = +3 V to +3.6 V, VREF = VDD, AGND = DGND = 0 V, fCLKIN = 2 MHz,
MODE = Logic High. All specifications TMIN to TMAX unless othewise noted.)
Parameter
B Versions1 Units
Test Conditions/Comments
DYNAMIC PERFORMANCE2
Signal-to-Noise Ratio3 (SNR)
69
Total Harmonic Distortion (THD) –80
Peak Harmonic or Spurious Noise
–80
Intermodulation Distortion (IMD)
Second Order Terms
–80
Third Order Terms
–80
DC ACCURACY
Resolution
12
Integral Nonlinearity
±2
Differential Nonlinearity
±1
Full-Scale Error
± 20
Bipolar Zero Error
± 12
Unipolar Offset Error
±3
dB min
dB typ
dB typ
dB typ
dB typ
Bits
LSB max
LSB max
LSB max
LSB max
LSB max
Typically SNR Is 71 dB
VIN = 1 kHz Sine Wave, fSAMPLE = 50 kHz
VIN = 1 kHz Sine Wave, fSAMPLE = 50 kHz
VIN = 1 kHz, fSAMPLE = 50 kHz
fa = 0.983 kHz, fb = 1.05 kHz, fSAMPLE = 50 kHz
fa = 0.983 kHz, fb = 1.05 kHz, fSAMPLE = 50 kHz
All DC ACCURACY Specifications Apply for the Two
Analog Input Ranges
Guaranteed Monotonic
ANALOG INPUT
Input Voltage Ranges
Input Resistance
REFERENCE INPUT
VREF (For Specified Performance)
IREF
LOGIC INPUTS
CONVST, RD, CS, CLKIN
Input High Voltage, VINH
Input Low Voltage, VINL
Input Current, IIN
Input Capacitance, CIN4
MODE INPUT
Input High Voltage, VINH
Input Low Voltage, VINL
Input Current, IIN
Input Capacitance, CIN4
LOGIC OUTPUTS
DB11–DB0, BUSY
Output High Voltage, VOH
Output Low Voltage, VOL
DB11–DB0
Floating-State Leakage Current
Floating-State Output Capacitance4
0 to VREF
± VREF
10
5/12
VDD
1.2
2.1
0.6
± 10
10
VDD –0.2
0.2
± 100
10
2.4
0.4
± 10
10
Volts
Volts
MΩ min
kΩ min/max
See Figure 4
See Figure 5
0 to VREF Range
8 kΩ typical: ± VREF Range
V
mA max
V min
V max
µA max
pF max
V
V
µA max
pF max
VIN = 0 V or VDD
VIN = 0 V or VDD
V min
V max
µA max
pF max
ISOURCE = 200 µA
ISINK = 0.8 mA
CONVERSION
Conversion Time
15
Track/Hold Acquisition Time
5
µs max
µs max
fCLKIN = 2 MHz
POWER REQUIREMENTS
VDD
IDD
Normal Power Mode @ +25°C
TMIN to TMAX
Power Save Mode @ +25°C
TMIN to TMAX
Power Dissipation
Normal Power Mode @ +25°C
TMIN to TMAX
Power Save Mode @ +25°C
TMIN to TMAX
+3.3
3
4
400
800
11
15
1.5
3
V nom
mA max
mA max
µA max
µA max
mW max
mW max
mW max
mW max
+3 V to +3.6 V for Specified Performance
Typically 2 mA; MODE = VDD
Typically 2.5 mA; MODE = VDD
Logic Inputs @ 0 V or VDD; MODE = 0 V; Typically 250 µA
Logic Inputs @ 0 V or VDD; MODE = 0 V; Typically 300 µA
VDD = 3.6 V: Typically 8 mW; MODE = VDD
VDD = 3.6 V: Typically 9 mW; MODE = VDD
VDD = 3.6 V: Typically 1 mW; MODE = 0 V
VDD = 3.6 V: Typically 1 mW; MODE = 0 V
NOTES
1Temperature range is as follows: B Versions, –40°C to +85°C.
2VIN = 0 to VREF.
3SNR calculation includes distortion and noise components.
4Sample tested @ +25°C to ensure compliance.
Specifications subject to change without notice.
–2–
REV. 0
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