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AD7858L датащи(PDF) 2 Page - Analog Devices

номер детали AD7858L
подробное описание детали  3 V to 5 V Single Supply, 200 kSPS 8-Channel, 12-Bit Sampling ADC
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производитель  AD [Analog Devices]
домашняя страница  http://www.analog.com
Logo AD - Analog Devices

AD7858L датащи(HTML) 2 Page - Analog Devices

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Parameter
A Version
1
B Version
1
Units
Test Conditions/Comments
DYNAMIC PERFORMANCE
Signal to Noise + Distortion Ratio3
70
71
dB min
Typically SNR is 72 dB
(SNR)
VIN = 10 kHz Sine Wave, fSAMPLE = 200 kHz (100 kHz)
Total Harmonic Distortion (THD)
–78
–78
dB max
VIN = 10 kHz Sine Wave, fSAMPLE = 200 kHz (100 kHz)
Peak Harmonic or Spurious Noise
–78
–78
dB max
VIN = 10 kHz Sine Wave, fSAMPLE = 200 kHz (100 kHz)
Intermodulation Distortion (IMD)
Second Order Terms
–78
–80
dB typ
fa = 9.983 kHz, fb = 10.05 kHz, fSAMPLE = 200 kHz (100 kHz)
Third Order Terms
–78
–80
dB typ
fa = 9.983 kHz, fb = 10.05 kHz, fSAMPLE = 200 kHz (100 kHz)
Channel-to-Channel Isolation
–90
–90
dB typ
VIN = 25 kHz
DC ACCURACY
Any Channel
Resolution
12
12
Bits
Integral Nonlinearity
±1
±1
LSB max
2.5 V External Reference VDD = 3 V, VDD = 5 V (B Grade Only)
±1
±0.5
LSB max
5 V External Reference VDD = 5 V
(
±1)
LSB max
(L Version, 5 V External Reference, VDD = 5 V)
(
±1)
LSB max
(L Version)
Differential Nonlinearity
±1
±1
LSB max
Guaranteed No Missed Codes to 12 Bits. 2.5 V External
Reference VDD = 3 V, 5 V External Reference, VDD = 5 V
Total Unadjusted Error
±1
±1
LSB typ
Unipolar Offset Error
±5
±5
LSB max
Typically
±2 LSBs
±2.5
±2.5
LSB max
5 V External Reference, VDD = 5 V
(
±3)
(
±3)
LSB max
(L Version)
(
±1.5)
(
±1.5)
LSB max
(L Version, 5 V External Reference, VDD = 5 V)
Unipolar Offset Error Match
1.5
1.5
LSB max
Positive Full-Scale Error
±4
±4
LSB max
±1.5
±1.5
LSB max
5 V External Reference, VDD = 5 V
Positive Full-Scale Error Match
1
1
LSB max
ANALOG INPUT
Input Voltage Ranges
0 to VREF
0 to VREF
Volts
i.e., AIN(+) – AIN(–) = 0 to VREF, AIN(–) can be biased
up but AIN(+) cannot go below AIN(–)
Leakage Current
±1
±1
µA max
Input Capacitance
20
20
pF typ
REFERENCE INPUT/OUTPUT
REFIN Input Voltage Range
2.3/VDD
2.3/VDD
V min/max
Functional from 1.2 V
Input Impedance
150
150
k
Ω typ
REFOUT Output Voltage
2.3/2.7
2.3/2.7
V min/max
REFOUT Tempco
20
20
ppm/
°C typ
LOGIC INPUTS
Input High Voltage, VINH
2.4
2.4
V min
AVDD = DVDD = 4.5 V to 5.5 V
2.1
2.1
V min
AVDD = DVDD = 3.0 V to 3.6 V
Input Low Voltage, VINL
0.8
0.8
V max
AVDD = DVDD = 4.5 V to 5.5 V
0.6
0.6
V max
AVDD = DVDD = 3.0 V to 3.6 V
Input Current, IIN
±10
±10
µA max
Typically 10 nA, VIN = 0 V or VDD
Input Capacitance, CIN
4
10
10
pF max
LOGIC OUTPUTS
Output High Voltage, VOH
ISOURCE = 200
µA
4
4
V min
AVDD = DVDD = 4.5 V to 5.5 V
2.4
2.4
V min
AVDD = DVDD = 3.0 V to 3.6 V
Output Low Voltage, VOL
0.4
0.4
V max
ISINK = 0.8 mA
Floating-State Leakage Current
±10
±10
µA max
Floating-State Output Capacitance
4
10
10
pF max
Output Coding
Straight (Natural) Binary
CONVERSION RATE
Conversion Time
4.6 (18)
4.6
µs max
(L Versions Only, –40
°C to +85°C, 1 MHz CLKIN)
(10)
µs max
(L Versions Only, 0
°C to +70°C, 1.8 MHz CLKIN)
Track/Hold Acquisition Time
0.4 (1)
0.4 (1)
µs min
(L Versions Only)
REV. B
–2–
AD7858/AD7858L–SPECIFICATIONS1, 2 (AV
DD = DVDD = +3.0 V to +5.5 V, REFIN/REFOUT = 2.5 V External
Reference unless otherwise noted, fCLKIN = 4 MHz (1.8 MHz B Grade (0 C to +70 C), 1 MHz A and B Grades (–40 C to +85 C) for L Version); fSAMPLE =
200 kHz (AD7858), 100 kHz (AD7858L);
SLEEP = Logic High; T
A = TMIN to TMAX, unless otherwise noted.) Specifications in ( ) apply to the AD7858L.


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