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AD9238BSTZRL-20 Scheda tecnica(PDF) 5 Page - Analog Devices

Il numero della parte AD9238BSTZRL-20
Spiegazioni elettronici  Dual A/D Converter
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Produttore elettronici  AD [Analog Devices]
Homepage  http://www.analog.com
Logo AD - Analog Devices

AD9238BSTZRL-20 Scheda tecnica(HTML) 5 Page - Analog Devices

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AD9238
Rev. C | Page 4 of 48
SPECIFICATIONS
DC SPECIFICATIONS
AVDD = 3 V, DRVDD = 2.5 V, maximum sample rate, CLK_A = CLK_B; AIN = −0.5 dBFS differential input, 1.0 V internal reference,
TMIN to TMAX, DCS enabled, unless otherwise noted.
Table 1.
Test
AD9238BST/BCP-20
AD9238BST/BCP-40
AD9238BST/BCP-65
Parameter
Temp
Level
Min
Typ
Max
Min
Typ
Max
Min
Typ
Max
Unit
RESOLUTION
Full
VI
12
12
12
Bits
ACCURACY
No Missing Codes Guaranteed
Full
VI
12
12
12
Bits
Offset Error
Full
VI
±0.30
±1.2
±0.50
±1.1
±0.50
±1.1
% FSR
Gain Error1
Full
IV
±0.30
±2.2
±0.50
±2.4
±0.50
±2.5
% FSR
Differential Nonlinearity (DNL)2
Full
V
±0.35
±0.35
±0.35
LSB
25°C
I
±0.35
±0.9
±0.35
±0.8
±0.35
±1.0
LSB
Integral Nonlinearity (INL)2
Full
V
±0.45
±0.60
±0.70
LSB
25°C
I
±0.40
±1.4
±0.50
±1.4
±0.55
±1.75
LSB
TEMPERATURE DRIFT
Offset Error
Full
V
±4
±4
±6
μV/°C
Gain Error
Full
V
±12
±12
±12
ppm/°C
INTERNAL VOLTAGE REFERENCE
Output Voltage Error (1 V Mode)
Full
VI
±5
±35
±5
±35
±5
±35
mV
Load Regulation @ 1.0 mA
Full
V
0.8
0.8
0.8
mV
Output Voltage Error (0.5 V Mode)
Full
V
±2.5
±2.5
±2.5
mV
Load Regulation @ 0.5 mA
Full
V
0.1
0.1
0.1
mV
INPUT REFERRED NOISE
Input Span = 1 V
25°C
V
0.54
0.54
0.54
LSB rms
Input Span = 2.0 V
25°C
V
0.27
0.27
0.27
LSB rms
ANALOG INPUT
Input Span = 1.0 V
Full
IV
1
1
1
V p-p
Input Span = 2.0 V
Full
IV
2
2
2
V p-p
Input Capacitance3
Full
V
7
7
7
pF
REFERENCE INPUT RESISTANCE
Full
V
7
7
7
POWER SUPPLIES
Supply Voltages
AVDD
Full
IV
2.7
3.0
3.6
2.7
3.0
3.6
2.7
3.0
3.6
V
DRVDD
Full
IV
2.25
3.0
3.6
2.25
3.0
3.6
2.25
3.0
3.6
V
Supply Current
IAVDD2
Full
V
60
110
200
mA
IDRVDD2
Full
V
4
10
14
mA
PSRR
Full
V
±0.01
±0.01
±0.01
% FSR
POWER CONSUMPTION
DC Input4
Full
V
180
330
600
mW
Sine Wave Input2
Full
VI
190
212
360
397
640
698
mW
Standby Power5
Full
V
2.0
2.0
2.0
mW
MATCHING CHARACTERISTICS
Offset Error
25°C
V
±0.1
±0.1
±0.1
% FSR
Gain Error
25°C
V
±0.05
±0.05
±0.05
% FSR
1 Gain error and gain temperature coefficient are based on the ADC only (with a fixed 1.0 V external reference).
2 Measured at maximum clock rate with a low frequency sine wave input and approximately 5 pF loading on each output bit.
3 Input capacitance refers to the effective capacitance between one differential input pin and AVSS. Refer to Figure
for the equivalent analog input structure.
29
4 Measured with dc input at maximum clock rate.
5 Standby power is measured with the CLK_A and CLK_B pins inactive (that is, set to AVDD or AGND).


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