ADC-228 Ver la hoja de datos (PDF) - DATEL Data Acquisition products

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ADC-228

8-Bit, 20MHz, Complete Flash A/D Converter

DATEL Data Acquisition products  

ADC-228

®

®

ABSOLUTE MAXIMUM RATINGS

PARAMETER

LIMITS

Power Supply Voltage,

Pin 19

Pin 10

Digital Inputs, Pins 8,9,11,12,18

Analog Input, Pin 5

Digital Outputs

Lead Temp. (10 seconds)

Pin 1

–0.5 to +7V

–0.3 to +18V

+0.3 to –18V

–0.5 to +5.5V

–6 to +7.5V

–0.5 to +5.5V (short circuit protected to ground)

+300°C

FUNCTIONAL SPECIFICATIONS

(Apply over the operating temperature range with 20MHz clock and ±15V and +5V

power supply voltages, unless otherwise specified.)

ANALOG INPUTS

MIN. TYP. MAX. UNITS

Single-Ended, Non-Isolated

Input Range, dc-20MHz

Input Resistance

Input Capacitance

0

—

+5.0

Volts

2.45

2.5

2.55

kΩ

—

5

10

pF

DIGITAL INPUTS

Logic Levels

Logic 1

Logic 0

Logic Loading

Logic 1

Logic 0

Clock Pulse Widths

"High"

"Low"

+2.0

—

—

Volts

—

—

+0.8

Volts

—

—

+160

µA

—

—

–0.5

mA

25

—

—

ns

19

—

—

ns

DIGITAL OUTPUTS

Coding

Resolution

Logic Levels

Logic 1

Logic 0

Logic Loading

Logic 1

Logic 0

Output Data Valid Delay

From Rising Edge

Output Hold Time

Straight bin., comp. bin., two's

comp.,

comp. two's comp.

8 bits

+2.4

—

—

Volts

—

—

+0.4

Volts

—

—

–1

mA

—

—

+1

mA

—

30

40

ns

5

—

—

ns

PERFORMANCE

Sampling Rate Œ

Differential Linearity 

Code Transitions

Code Centers

Integral Linearity, +25°C

End-point

Best-fit Line

Over Temperature End-point

Best-fit Line

Zero-Scale Offset

Code "0" to "1" Transition

+25°C

–55 to +125°C

Gain error

Full Scale Absolute Accuracy

Differential Gain Ž

Differential Phase Ž

Aperture Delay

Aperture Jitter

No Missing Codes

Power Supply Rejection

20

—

—

MHz

—

±0.5

±0.75

LSB

—

±0.25

±0.5

LSB

—

±0.5

±0.75

LSB

—

±0.35

±0.5

LSB

—

—

±1

LSB

—

—

±1

LSB

—

—

±0.5

LSB

—

±0.5

±1.5

LSB

—

±0.5

±1.5

LSB

—

±0.5

±1.5

LSB

—

2

—

%

—

1

—

deg.

—

8

—

ns

—

50

—

ps

Over the operating temperature range

±0.02% FSR/ %VS maximum

DYNAMIC PERFORMANCE MIN. TYP. MAX. UNITS

Total Harm. Distortion, –0.5dB

DC to 2.5 MHz

—

–55

–53

dB

2.5 MHz to 5 MHz

—

–50

–48

dB

5 MHz to 10 MHz

—

–39

–36

dB

Signal-to-Noise Ratio

and Distortion, –0.5dB

DC to 2.5 MHz

44

49

—

dB

2.5 MHz to 5 MHz

43

46

—

dB

5 MHz to 10 MHz

35

38

—

dB

Signal-to-Noise Ratio

w/o Distortion, –0.5 dB

DC to 2.5 MHz

45

48

—

dB

2.5 MHz to 5 MHz

45

48

—

dB

5 MHz to 10 MHz

42

45

—

dB

Effective Bits, –0.5dB

DC to 2.5 MHz

7.1

7.75

—

Bits

2.5 MHz to 5 MHz

6.9

7.4

—

Bits

5 MHz to 10 MHz

5.6

6.1

—

Bits

Input Bandwidth

Full Power

7

—

—

MHz

Small Signal (–20dB)

40

—

—

MHz

POWER SUPPLY

Power Supply Range

+15V Supply

–15V Supply

+5V Supply

Power Supply Current

+15V Supply

–15V Supply

+5V Supply

Power Dissipation

±12V, +5V Nominal

Over full supply range

±15V, +5V Nominal

+11

–11

+4.75

—

—

—

—

—

—

+15

+15.75 Volts

–15 –15.75 Volts

+5

+5.25 Volts

—

+30

mA

—

–10

mA

—

+230

mA

1.4

1.65

Watts

1.6

1.85

Watts

1.5

1.75

Watts

PHYSICAL/ENVIRONMENTAL

Operating Temp. Range, Case

ADC-228MC

ADC-228MM, ADC-228/883

Storage Temp. Range

Package Type

Weight

0 to +70°C

–55 to +125°C

–65 to +150°C

24-pin, ceramic DDIP

0.3 ounces (8.5 grams)

Footnotes:

ΠAt full power input and chip selects enabled.

 See Technical Note 3.

Ž For 10-step, 40 IRE NTSC ramp test.

2

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