ADG781 Ver la hoja de datos (PDF) - Analog Devices

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componentes Descripción

Fabricante

ADG781

2.5 Ω Quad SPST Switches in Chip Scale Package

Analog Devices 

ADG781/ADG782/ADG783

VDD

GND

S

D

IN

RON

ΔRON

RFLAT(ON)

IS (OFF)

ID (OFF)

ID, IS (ON)

VD (VS)

CS (OFF)

CD (OFF)

TERMINOLOGY

Most positive power supply potential.

Ground (0 V) reference.

Source terminal. May be an input or output.

Drain terminal. May be an input or output.

Logic control input.

Ohmic resistance between D and S.

On-resistance match between any two chan-

nels (i.e., RON max and RON min).

Flatness is defined as the difference between

the maximum and minimum value of on

resistance as measured over the specified

analog signal range.

Source leakage current with the switch “OFF.”

Drain leakage current with the switch “OFF.”

Channel leakage current with the switch “ON.”

Analog voltage on terminals D, S.

“OFF” switch source capacitance.

“OFF” switch drain capacitance.

CD, CS (ON)

tON

tOFF

tD

Crosstalk

Off Isolation

Charge

Injection

On Response

On Loss

“ON” switch capacitance.

Delay between applying the digital control

input and the output switching on.

Delay between applying the digital control

input and the output switching off.

“OFF” time or “ON” time measured

between the 90% points of both switches,

when switching from one address state to

another (ADG783 only).

A measure of unwanted signal that is coupled

through from one channel to another as a

result of parasitic capacitance.

A measure of unwanted signal coupling

through an “OFF” switch.

A measure of the glitch impulse transferred

from the digital input to the analog output

during switching.

The frequency response of the “ON” switch.

The loss due to the on resistance of the switch.

Typical Performance Characteristics

6

5.5

TA = 25؇C

5

VDD = 2.7V

4.5

4

3.5

3

VDD = 3V

VDD = 4.5V

2.5

2

VDD = 5V

1.5

1

0.5

0

0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5

VD OR VS – DRAIN OR SOURCE VOLTAGE – V

TPC 1. On Resistance as a Function of VD (VS)

6

5.5

5

4.5

4

3.5

3

2.5

2

1.5

1

0.5

0

0

+85؇C

– 40؇ C

VDD = 3V

+25؇C

0.5

1

1.5

2

2.5

3

VD OR VS – DRAIN OR SOURCE VOLTAGE – V

TPC 2. On Resistance as a Function of VD (VS) for

Different Temperatures VDD = 3 V

REV. C

6

5.5

VDD = 5V

5

4.5

4

+85؇C

3.5

3

+25؇C

2.5

2

1.5

– 40؇ C

1

0.5

0

0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5

VD OR VS – DRAIN OR SOURCE VOLTAGE – V

TPC 3. On Resistance as a Function of VD (VS) for

Different Temperatures VDD = 5 V

10m

VDD = 5V

1m

100␮

10␮

1␮

4 SW

1 SW

100n

10n

1n

100

1k

10k

100k

1M

10M

FREQUENCY – Hz

TPC 4. Supply Current vs. Input Switching Frequency

–5–

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