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AD7886KD bảng dữ liệu(PDF) 2 Page - Analog Devices

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Giải thích chi tiết về linh kiện  LC2MOS 12-Bit, 750 kHz/1 MHz, Sampling ADC
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AD7886–SPECIFICATIONS
–2–
REV. B
(VDD = +5 V
5%, VSS = –5 V
5%, A6ND = DGND = O V, VREF = –3.5 V, connected
as shown in Figure 2. All Specifications TMIN to TMAX unless otherwise noted. Specifications apply for 750 kHz version.)
Parameter
J Version
1
K, B Versions
1
T Version
1
Units
Test Conditions/Comments
DYNAMIC PERFORMANCE
2
Signal-to-Noise Ratio3 (SNR)
65
67
65
dB min
VIN = 100 kHz Sine Wave, fSAMPLE = 750 kHz
Total Harmonic Distortion (THD)
–75
–75
–75
dB typ
VIN = 100 kHz Sine Wave, fSAMPLE = 750 kHz
Peak Harmonic or Spurious Noise
–77
–77
–77
dB typ
VIN = 100 kHz Sine Wave, fSAMPLE = 750 kHz
Intermodulation Distortion (IMD)
Second Order Terms
–80
–80
–80
dB typ
fa = 96 kHz, fb = 103 kHz, fSAMPLE = 750 kHz
Third Order Terms
–80
–80
–80
dB typ
ACCURACY
Resolution
12
12
12
Bits
Integral Linearity TMIN to TMAX
±2
±2
LSB max
Minimum Resolution for Which
No Missing Codes Are Guaranteed
12
12
12
Bits
Unipolar Offset Error @ +25
°C
±5
±5
±5
LSB max
Input Range: 0 V to 5 V or 0 V to 10 V
TMIN to TMAX
±5
±5
±5
LSB max
Bipolar Offset Error @ +25
°C
±5
±5
±5
LSB max
Input Range:
±5 V
TMIN to TMAX
±5
±5
±5
LSB max
Unipolar Gain Error @ +25
°C
±5
±5
±5
LSB max
Input Range: 0 V to 5 V or 0 V to 10 V
TMIN to TMAX
±5
±5
±5
LSB max
Bipolar Gain Error @ +25
°C
±5
±5
±5
LSB max
Input Range:
±5 V
TMIN to TMAX
±5+5
±5
LSB max
ANALOG INPUT
Unipolar Input Current
1.5
1.5
1.5
mA max
Input Ranges: 0 V to 5 V or 0 V to 10 V
Bipolar Input Current
±0.75
±0.75
±0.75
mA max
Input Range:
±5 V
REFERENCE INPUT
VREF
–3.5
–3.5
–3.5
Volts
±2% For Specified Performance
Input Reference Current
–10
–10
–10
mA max
R1, Resistance
9
9
9
k
Ω nom
±25%
R2, Resistance
6.3
6.3
6.3
k
Ω nom
±25%
R2/R1 Ratio
0.7
0.7
0.7
nom
±0.1%
POWER SUPPLY REJECTION
VDD Only, (FS Change)
0.5
0.5
0.5
LSB typ
VSS = –5 V, VDD = +4.75 V to +5.25 V
VSS Only, (FS Change)
0.5
0.5
0.5
LSB typ
VDD = +5 V, VSS = –4.75 V to –5.25 V
LOGIC INPUTS
Input High Voltage, VINH
2.4
2.4
2.4
V min
VDD = 5 V ± 5%
Input Low Voltage, VINL
0.8
0.8
0.8
V max
VDD = 5 V ± 5%
Input Current, IIN
±10
±10
±10
µA max
VIN = 0 V to VDD
Input Capacitance, CIN
4
10
10
10
pF max
LOGIC OUTPUTS
DB11–DB0,
BUSY
Output High Voltage, VOH
4
4
4
V min
ISOURCE = 200 µA
Output Low Voltage, VOL
0.4
0.4
0.4
V max
ISINK = 1.6 mA
DB11–DB0
Floating-State Leakage Current
±10
±10
±10
pA max
Floating-State Output Capacitance
4
15
15
15
pF max
POWER REQUIREMENTS
VDD
+5
+5
+5
V nom
±5% for Specified Performance
VSS
–5
–5
–5
V nom
±5% for Specified Performance
IDD
35
35
35
mA max
Typically 25 mA,
CONVST = CS = RD = VDD
ISS
–35
–35
–35
mA max
Typically 25 mA,
CONVST = CS = RD = VDD
Power Dissipation
250
250
250
mW typ
CONVST = CS = RD = VDD
350
350
350
mW max
NOTES
ITemperature ranges are as follows: J, K Versions: 0
°C to +70°C; B Version: –40°C to +85°C; T Version: –55°C to + 125°C.
2Applies to all three input ranges, V
IN = 0 to FS, pk-to-pk V.
3SNR calculation includes distortion and noise components.
4Sample tested @ +25
°C to ensure compliance.
Specifications subject to change without notice.


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