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AD7940 Folha de dados(PDF) 3 Page - Analog Devices

Nome de Peças AD7940
Descrição Electrónicos  3mW, 100kSPS, 14-Bit ADC in 6-Lead SOT-23
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Fabricante Electrônico  AD [Analog Devices]
Página de início  http://www.analog.com
Logo AD - Analog Devices

AD7940 Folha de dados(HTML) 3 Page - Analog Devices

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AD7940
Rev. 0 | Page 3 of 20
SPECIFICATIONS1
VDD = 2.50 V to 5.5 V, fSCLK = 2.5 MHz, fSAMPLE = 100 kSPS, unless otherwise noted; TA = TMIN to TMAX, unless otherwise noted.
Table 2.
Parameter
B Version
1
Unit
Test Conditions/Comments
DYNAMIC PERFORMANCE
fIN = 10 kHz sine wave
Signal-to-Noise + Distortion (SINAD)2
81
dB min
Total Harmonic Distortion (THD)2
−98
dB typ
Peak Harmonic or Spurious Noise (SFDR)2
−95
dB typ
Intermodulation Distortion (IMD)2
Second-Order Terms
−94
dB typ
Third-Order Terms
−100
dB typ
Aperture Delay
20
ns max
Aperture Jitter
30
ps typ
Full Power Bandwidth
7
MHz typ
@ −3 dB
2
MHz typ
@ −0.1 dB
DC ACCURACY
Resolution
14
Bits min
VDD = 2.5 V to 4.096 V
13
Bits min
VDD > 4.096 V
Integral Nonlinearity2
±1
LSB max
VDD = 2.5 V to 4.096 V
±2
LSB max
VDD > 4.096 V
Offset Error2
±6
LSB max
Gain Error2
±8
LSB max
ANALOG INPUT
Input Voltage Ranges
0 to VDD
V
DC Leakage Current
±0.3
µA max
Input Capacitance
30
pF typ
LOGIC INPUTS
Input High Voltage, VINH
2.4
V min
Input Low Voltage, VINL
0.4
V max
VDD = 3 V
0.8
V max
VDD = 5 V
Input Current, IIN
±0.3
µA max
Typically 10 nA, VIN = 0 V or VDD
Input Capacitance, CIN2, 3
10
pF max
LOGIC OUTPUTS
Output High Voltage, VOH
VDD – 0.2
V min
ISOURCE = 200 µA; VDD = 2.50 V to 5.25 V
Output Low Voltage, VOL
0.4
V max
ISINK = 200 µA
Floating-State Leakage Current
±0.3
µA max
Floating-State Output Capacitance2, 3
10
pF max
Output Coding
Straight (Natural) Binary
CONVERSION RATE
Conversion Time
8
µs max
16 SCLK cycles
Track-and-Hold Acquisition Time
500
ns max
Full-scale step input
400
ns max
Sine wave input ≤ 10 kHz
Throughput Rate
100
kSPS max
See the Serial Interface section
POWER REQUIREMENTS
VDD
2.50/5.5
V min/V max
IDD
Digital I/PS = 0 V or VDD
Normal Mode (Static)
5.2
mA max
VDD = 5.5 V; SCLK on or off
2
mA max
VDD = 3.6 V; SCLK on or off
Normal Mode (Operational)
4.8
mA max
VDD = 5.5 V; fSAMPLE = 100 kSPS; 3.3 mA typ
1.9
mA max
VDD = 3.6 V; fSAMPLE = 100 kSPS; 1.29 mA typ
Full Power-Down Mode
0.5
µA max
SCLK on or off. VDD = 5.5 V
0.3
µA max
SCLK on or off. VDD = 3.6 V


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