AD9238 Analog Devices, AD9238 Datasheet - Page 4

• Manufacturer Part Number: AD9238
• Description: Dual 12-Bit, 20/40/65 MSPS, 3 V ADC
• Manufacturer: Analog Devices

Specifications of AD9238

• Resolution (bits): 12bit
• # Chan: 2
• Sample Rate: 65MSPS
• Interface: Par
• Analog Input Type: Diff-Uni,SE-Uni
• Ain Range: (2Vref) p-p,1 V p-p,2 V p-p
• Adc Architecture: Pipelined
• Pkg Type: CSP,QFP

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