LTC1747CFW#PBF Datasheet LTC1747CFW#PBF, LTC1747IFW#PBF | P4-P6

4

LTC1747

1747fa

SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS

V

DD

Positive Supply Voltage 4.75 5.25 V

I

DD

Positive Supply Current ● 280 310 mA

P

DIS

Power Dissipation ● 1.4 1.55 W

OV

DD

Digital Output Supply Voltage 0.5 V

DD

V

The ● indicates specifications which apply over the full operating temperature

range, otherwise specifications are at T

A

= 25°C. (Note 5)

POWER REQUIRE E TS

WU

SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS

V

IH

High Level Input Voltage V

DD

= 5.25V ● 2.4 V

V

IL

Low Level Input Voltage V

DD

= 4.75V ● 0.8 V

I

IN

Digital Input Current V

IN

= 0V to V

DD

● ±10 µA

C

IN

Digital Input Capacitance MSBINV and OE Only 1.5 pF

V

OH

High Level Output Voltage OV

DD

= 4.75V I

O

= –10µA 4.74 V

I

O

= –200µA ● 4 4.74 V

V

OL

Low Level Output Voltage OV

DD

= 4.75V I

O

= 160µA 0.05 V

I

O

= 1.6mA ● 0.1 0.4 V

I

OZ

Hi-Z Output Leakage D11 to D0 V

OUT

= 0V to V

DD

, OE = High ● ±10 µA

C

OZ

Hi-Z Output Capacitance D11 to D0 OE = High (Note 8) ● 15 pF

I

SOURCE

Output Source Current V

OUT

= 0V –50 mA

I

SINK

Output Sink Current V

OUT

= 5V 50 mA

The ● indicates specifications which apply over the full

operating temperature range, otherwise specifications are at T

A

= 25°C. (Note 5)

DIGITAL I PUTS A D DIGITAL OUTPUTS

UU

SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS

t

0

ENC Period (Note 9) ● 12.5 2000 ns

t

1

ENC High (Note 8) ● 6 1000 ns

t

2

ENC Low (Note 8) ● 6 1000 ns

t

3

Aperture Delay (Note 8) 0 ns

t

4

ENC to CLKOUT Falling C

L

= 10pF (Note 8) ● 1 2.4 4 ns

t

5

ENC to CLKOUT Rising C

L

= 10pF (Note 8) t

1

+ t

4

ns

For 80Msps 50% Duty Cycle C

L

= 10pF (Note 8) ● 7.25 8.65 10.25 ns

t

6

ENC to DATA Delay C

L

= 10pF (Note 8) ● 2 4.9 7.2 ns

t

7

ENC to DATA Delay (Hold Time) (Note 8) ● 1.4 3.4 4.7 ns

t

8

ENC to DATA Delay (Setup Time) C

L

= 10pF (Note 8) t

0

– t

6

ns

For 80Msps 50% Duty Cycle C

L

= 10pF (Note 8) ● 5.3 7.6 10.5 ns

t

9

CLKOUT to DATA Delay (Hold Time), (Note 8) ● 6ns

80Msps 50% Duty Cycle

t

10

CLKOUT to DATA Delay (Setup Time), C

L

= 10pF (Note 8) ● 2.1 ns

80Msps 50% Duty Cycle

t

11

DATA Access Time After OE C

L

= 10pF (Note 8) 10 25 ns

t

12

BUS Relinquish (Note 8) 10 25 ns

Data Latency 5 cycles

The ● indicates specifications which apply over the full operating temperature

range, otherwise specifications are at T

A

= 25°C. (Note 5)

TI I G CHARACTERISTICS

UW

5

LTC1747

1747fa

Note 1: Absolute Maximum Ratings are those values beyond which the life

of a device may be impaired.

Note 2: All voltage values are with respect to GND (unless otherwise

noted).

Note 3: When these pin voltages are taken below GND or above V

DD

, they

will be clamped by internal diodes. This product can handle input currents

of greater than 100mA below GND or above V

DD

without latchup.

Note 4: When these pin voltages are taken below GND, they will be

clamped by internal diodes. This product can handle input currents of

>100mA below GND without latchup. These pins are not clamped to V

DD

.

Note 5: V

DD

= 5V, f

SAMPLE

= 80MHz, differential ENC/ENC = 2V

P-P

80MHz

sine wave, input range = ±1.6V differential, unless otherwise specified.

Note 6: Integral nonlinearity is defined as the deviation of a code from a

straight line passing through the actual endpoints of the transfer curve.

The deviation is measured from the center of the quantization band.

Note 7: Bipolar offset is the offset voltage measured from –0.5 LSB

when the output code flickers between 0000 0000 0000 and

1111 1111 1111.

Note 8: Guaranteed by design, not subject to test.

Note 9: Recommended operating conditions.

ELECTRICAL CHARACTERISTICS

TYPICAL PERFOR A CE CHARACTERISTICS

UW

INL, 3.2V Range

DNL, 3.2V Range

Averaged 8192 Point FFT,

5.2MHz Input, –1dB, 3.2V Range

OUTPUT CODE

0

–1.0

INL ERROR (LSB)

–0.8

–0.4

–0.2

0

1

T

A

= 25°C

0.4

1024

2048

1747 G01

–0.6

0.6

0.8

0.2

3072

4096

OUTPUT CODE

0

–1.0

DNL ERROR (LSB)

–0.8

–0.4

–0.2

0

1

T

A

= 25°C

0.4

1024

2048

1747 G02

–0.6

0.6

0.8

0.2

3072

4096

FREQUENCY (MHz)

0

AMPLITUDE (dBFS)

–60

–30

–20

40

1747 G04

–70

–80

–120

10

20

30

5

15

25

35

–100

0

–10

–40

–50

–90

–110

T

A

= 25°C

Averaged 8192 Point FFT,

5.2MHz Input, –10dB, 3.2V Range

FREQUENCY (MHz)

0

AMPLITUDE (dBFS)

–60

–30

–20

40

1747 G05

–70

–80

–120

10

20

30

5

15

25

35

–100

0

–10

–40

–50

–90

–110

T

A

= 25°C

Averaged 8192 Point FFT,

5.2MHz Input, –20dB, 3.2V Range

FREQUENCY (MHz)

0

AMPLITUDE (dBFS)

–60

–30

–20

40

1747 G06

–70

–80

–120

10

20

30

5

15

25

35

–100

0

–10

–40

–50

–90

–110

T

A

= 25°C

6

LTC1747

1747fa

TYPICAL PERFOR A CE CHARACTERISTICS

UW

Averaged 8192 Point FFT,

20.2MHz Input, –1dB, 3.2V Range

Averaged 8192 Point FFT,

20.2MHz Input, –10dB, 3.2V Range

FREQUENCY (MHz)

0

AMPLITUDE (dBFS)

–60

–30

–20

40

1747 G07

–70

–80

–120

10

20

30

5

15

25

35

–100

0

–10

–40

–50

–90

–110

T

A

= 25°C

FREQUENCY (MHz)

0

AMPLITUDE (dBFS)

–60

–30

–20

40

1747 G08

–70

–80

–120

10

20

30

5

15

25

35

–100

0

–10

–40

–50

–90

–110

T

A

= 25°C

Averaged 8192 Point FFT,

20.2MHz Input, –20dB, 3.2V Range

FREQUENCY (MHz)

0

AMPLITUDE (dBFS)

–60

–30

–20

40

1747 G09

–70

–80

–120

10

20

30

5

15

25

35

–100

0

–10

–40

–50

–90

–110

T

A

= 25°C

Averaged 8192 Point FFT,

50.2MHz Input, –1dB, 3.2V Range

Averaged 8192 Point FFT,

50.2MHz Input, –10dB, 3.2V Range

Averaged 8192 Point FFT,

50.2MHz Input, –20dB, 3.2V Range

FREQUENCY (MHz)

0

AMPLITUDE (dBFS)

–60

–30

–20

40

1747 G10

–70

–80

–120

10

20

30

5

15

25

35

–100

0

–10

–40

–50

–90

–110

T

A

= 25°C

FREQUENCY (MHz)

0

AMPLITUDE (dBFS)

–60

–30

–20

40

1747 G11

–70

–80

–120

10

20

30

5

15

25

35

–100

0

–10

–40

–50

–90

–110

T

A

= 25°C

FREQUENCY (MHz)

0

AMPLITUDE (dBFS)

–60

–30

–20

40

1747 G12

–70

–80

–120

10

20

30

5

15

25

35

–100

0

–10

–40

–50

–90

–110

T

A

= 25°C

Averaged 8192 Point FFT,

70.2MHz Input, –1dB, 3.2V Range

Averaged 8192 Point FFT,

70.2MHz Input, –10dB, 3.2V Range

Averaged 8192 Point FFT,

70.2MHz Input, –20dB, 3.2V Range

FREQUENCY (MHz)

0

AMPLITUDE (dBFS)

–60

–30

–20

40

1747 G13

–70

–80

–120

10

20

30

5

15

25

35

–100

0

–10

–40

–50

–90

–110

T

A

= 25°C

FREQUENCY (MHz)

0

AMPLITUDE (dBFS)

–60

–30

–20

40

1747 G14

–70

–80

–120

10

20

30

5

15

25

35

–100

0

–10

–40

–50

–90

–110

T

A

= 25°C

FREQUENCY (MHz)

0

AMPLITUDE (dBFS)

–60

–30

–20

40

1747 G15

–70

–80

–120

10

20

30

5

15

25

35

–100

0

–10

–40

–50

–90

–110

T

A

= 25°C

LTC1747CFW#PBF

LTC1747CFW#PBF

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