AD9238BSTZ-20 datasheet(5/49 Pages) AD

部件名	AD9238BSTZ-20

功能描述	Dual A/D Converter

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制造商	AD [Analog Devices]

网页	http://www.analog.com

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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

Bits

ACCURACY

No Missing Codes Guaranteed

Full

VI

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

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

±6

μV/°C

Gain Error

Full

V

±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

mV

Output Voltage Error (0.5 V Mode)

Full

V

±2.5

mV

Load Regulation @ 0.5 mA

Full

V

0.1

mV

INPUT REFERRED NOISE

Input Span = 1 V

25°C

V

0.54

LSB rms

Input Span = 2.0 V

25°C

V

0.27

LSB rms

ANALOG INPUT

Input Span = 1.0 V

Full

IV

1

V p-p

Input Span = 2.0 V

Full

IV

2

V p-p

Input Capacitance3

Full

V

7

pF

REFERENCE INPUT RESISTANCE

Full

V

7

kΩ

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

% 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

mW

MATCHING CHARACTERISTICS

Offset Error

25°C

V

±0.1

% FSR

Gain Error

25°C

V

±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).

类似零件编号 - AD9238BSTZ-20

制造商	部件名	数据表	功能描述
Analog Devices	AD9238BSTZ-20	1Mb / 48P	12-Bit, 20 MSPS/40 MSPS/65 MSPS Dual A/D Converter REV. B
Analog Devices	AD9238BSTZ-20EB	1Mb / 48P	12-Bit, 20 MSPS/40 MSPS/65 MSPS Dual A/D Converter REV. B

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