ADC-321 datasheet(2/8 Pages) MURATA-PS

No de pièce	ADC-321

Description	8-Bit, 50MHz Video A/D Converter

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Fabricant	MURATA-PS [Murata Power Solutions Inc.]

Site Internet	http://www.murata-ps.com

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DIGITAL OUTPUTS (continued)

MIN.

TYP.

MAX.

UNITS

Output Data Delay

(OE = 0V, CL = 15pF)

(@ +DVS = +5V)

t PLH

5.5

9.5

12.0

ns

t PHL

5.5

8.5

12.0

ns

(@+DVS = +3.3V)

t PLH

4.3

11.8

16.3

ns

t PHL

4.3

7.6

16.3

ns

3-State Output Enable Time

(RL = 1k , CL = 15pF)

(@ +DVS = +5V)

t PZH

2.5

4.5

8.0

ns

t PZL

2.5

6.0

8.0

ns

(@+DVS = +3.3V)

t PZH

3.0

7.0

9.0

ns

t PZL

3.0

5.0

9.0

ns

3-State Output Disable Time

(RL = 1k , CL = 15pF)

(@+DVS = +5V)

t PHZ, t PLZ

3.5

5.5

7.5

ns

(@+DVS = +3.3V)

t PHZ, t PLZ

2.5

5.5

8.0

ns

CLAM CIRCUIT

Clamp Offset Voltage

020

40

mV

Clamp Pulse Width

1.75

2.75

3.75

μA

PERFORMANCE

Resolution

8

—

Bit

Sampling Rate, maximum, FS

50

—

MHz

minimum, FS

—

0.5

MHz

Aperature Delay (Tds)

—0

—

ns

Integral Linearity Error

—

±0.7

±1.5

LSB

Diff. Linearity Error

—

±0.3

±0.5

LSB

Diff. Gain Error

—3

—

%

Diff. Phase Error

—1.5

—

deg

S/N Ratio with THD

(fIN = 100kHz)

—

45

—

dB

(fIN = 500kHz)

—

44

—

dB

(fIN = 1MHz)

—

44

—

dB

(fIN = 3MHz)

—

43

—

dB

(fIN = 10MHz)

—

38

—

dB

(fIN = 25MHz)

—

32

—

dB

Spurious Free Dynamic Range

(fIN = 100kHz)

—

51

—

dB

(fIN = 500kHz)

—

46

—

dB

(fIN = 1MHz)

—

49

—

dB

(fIN = 3MHz)

—

46

—

dB

(fIN = 10MHz)

—

45

—

dB

(fIN = 25MHz)

—

45

—

dB

POWER REQUIREMENTS

Power Supply

+AVS

+4.75

+5.0

+5.25

Volts

+DVS

+3.0

—

+5.5

Volts

|AGND – DGND|

0

—

100

mW

Power Supply Current

1. AIS, DIS (@ +DVS = +5V)

—

25

36

mA

2. AIS

—23

33

mA

DIS (@ +DVS = +3.3V)

—

2

3

mA

Power Dissipation

—125

180

mW

ENVIRONMENTAL/PHYSICAL

Operating Temp. Range, Case

–40

—

+85

°C

Storage Temperature Range

–55

—

+150

°C

Package Type

32-pin, plastic QFP

Weight

0.007 ounces (0.2 grams)

ANALOG INPUTS

MIN.

TYP.

MAX.

UNITS

Input Voltage Range

+0.5

—

+2.5

Volts

Input Capacitance

(@ VIN = +1.5Vdc +0.07VRMS)

—15

—

pF

Input Signal Bandwidth

–1dB (@ RIN = 33 )

—60

—

MHz

–3dB (@ RIN = 33 )

—

100

—

MHz

REFERENCE INPUTS

Reference Resistance

VRT – VRB

260

370

480

Reference Current

4.1

5.4

7.7

mA

Reference Voltage

VRT

—

+2.7

Volts

VRB

0

—

Volts

VRT – VRB

1.7

—

Volts

Self Bias Voltage

VRB

+0.52

+0.56

+0.60

Volts

VRT – VRB

1.80

1.92

2.04

Volts

Capacitance (VRT,VRTS,VRB, VRBS)—

—

11

pF

Offset Voltage

VRT

–70

–50

–30

mV

VRB

20

40

60

mV

DIGITAL INPUTS

Logic Levels

Input Voltage "1"

2.2

—

Volts

Input Voltage "0"

—

+0.8

Volts

Input Current

A/D CLK

–240

—

240

μA

CLP, CLE

–240

—

40

μA

OE

–40

—

240

μA

Input Capacitance

——

11

pF

A/D Clock Pulse Width

(tpw1)

10

—

ns

(tpw0)

10

—

ns

DIGITAL OUTPUTS

MIN.

TYP.

MAX.

UNITS

Output Current (OE = 0V)

(@ +DVS = +5V)

"1"

—

–2

mA

"0"

4

—

mA

Output Current (OE = 0V)

(@ +DVS = +3.3V)

"1"

—

–1.2

mA

"0"

2.4

—

mA

Output Current

(@ OE = +3V)

"1"

–40

—

40

μA

"0"

–40

—

40

μA

Capacitance

——

11

pF

PARAMETERS

LIMITS

UNITS

Power Supply Voltage (+AVS, +DVS)

–0.5 to 7

Volts

Analog Input Voltage, (VIN)

–0.5 to +AVS + 0.5

Volts

Reference Input Voltage (VRT, VRB)

–0.5 to +AVS + 0.5

Volts

Digital Input Voltage (VIH, VIL)

–0.5 to +AVS + 0.5

Volts

Digital Output Voltage (VOH, VOL)

–0.5 to +DVS + 0.5

Volts

ABSOLUTE MAXIMUM RATINGS

FUNCTIONAL SPECIFICATIONS

Typical at TA = 25°C, VRT = +2.5V, VRB = +0.5V, +AVS = +5V, +DVS = +3V to +5.5V,

FS = 50MHz unless otherwise specified.

(TA = +25°C)

Footnotes:

See technical note 6

Pin 25 tied to AGND and pin 17 tied to +AVS

+AVS = +4.75 to +5.25V and +DVS = 3 to +5.5V, full operating tem. range.

VIL = 0V and VIH = +AVS, full operating temp. range

VOH = +DVS–0.8V and VOL = +0.4V, full operating temp. range

+DVS = +3 to +5.5V, full operating temp. range

OE: +3 to 0V change

OE: 0 to +3V change

2.75μs clamp pulse width, 14.3MHz sampling,

15.75kHz clamping rate

The clamp pulse width given is for NTSC. For other processing

systems adjust the rate to the clamp pulse cycle (1/15.75kHz for

NTSC) to equal the value for NTSC.

NTSC 40IRE ramp, 14.3MHz sampling

50MHz sampling, +AVS = +5V

11

12

11

12

ADC-321

8-Bit, 50MHz Video A/D Converter

Technical enquiries email: sales@murata-ps.com, tel: +1 508 339 3000

www.murata-ps.com

MDA_ADC-321.B01 Page 2 of 8

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