FSA3157L6X datasheet(5/11 Pages) FAIRCHILD

Part #	FSA3157L6X

Description	Low-Voltage SPDT Analog Switch or 2:1Multiplexer / De-multiplexer Bus Switch

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Manufacturer	FAIRCHILD [Fairchild Semiconductor]

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NC7SB3157, FSA3157 Rev. 1.0.2

5

AC Electrical Characteristics

Notes:

8. This parameter is guaranteed by design but not tested. The bus switch contributes no propagation delay other than

the RC delay of the on resistance of the switch and the 50pF load capacitance, when driven by an ideal voltage

source (zero output impedance).

9. Guaranteed by design.

10. Off Isolation = 20 log10 [VA / VBn].

Capacitance

TA = +25°C, f = 1MHz. Capacitance is characterized, but not tested in production.

Symbol

Parameter

Conditions

VCC

(V)

TA = +25°C

TA = –40°C to

+85°C

Units

Figure

Number

Min. Typ. Max. Min.

Max.

tPHL,

tPLH

Propagation Delay

Bus-to-Bus(8)

VI = OPEN

1.65 – 1.95

3.5

ns

Figure 12

Figure 13

2.3 – 2.7

1.2

3.0 – 3.6

0.8

4.5 – 5.5

0.3

tPZL,

tPZH

Output Enable Time

Turn-On Time

(A to Bn)

VI = 2 x VCC for tPZL

VI = 0V for tPZH

1.65 – 1.95

7.0

23.0

7.0

24.0

ns

Figure 12

Figure 13

2.3 – 2.7

3.5

13.0

3.5

14.0

3.0 – 3.6

2.5

6.9

2.5

7.6

4.5 – 5.5

1.7

5.2

1.7

5.7

tPLZ,

tPHZ

Output Disable Time

Turn-Off Time

(A Port to B Port)

VI = 2 x VCC for tPLZ

VI = 0V for tPHZ

1.65 – 1.95

3.0

12.5

3.0

13.0

ns

Figure 12

Figure 13

2.3 – 2.7

2.0

7.0

2.0

7.5

3.0 – 3.6

1.5

5.0

1.5

5.3

4.5 – 5.5

0.8

3.5

0.8

3.8

tB-M

Break-Before-Make

Time(9)

1.65 –1.95

0.5

ns

Figure 14

2.3 – 2.7

0.5

3.0 – 3.6

0.5

4.5 – 5.5

0.5

Q

Charge Injection(9)

CL = 0.1nF, VGEN = 0V,

5.0

7.0

pC

Figure 15

RGEN = 0Ω

3.3

3.0

OIRR

Off Isolation(10)

RL = 50Ω, f = 10MHz

1.65 – 5.5

–57.0

dB

Figure 16

Xtalk

Crosstalk

RL = 50Ω, f = 10MHz

1.65 – 5.5

–54.0

dB

Figure 17

BW

–3dB Bandwidth

RL = 50Ω

1.65 – 5.5

250

MHz Figure 20

THD

Total Harmonic

Distortion(9)

RL = 600Ω, 0.5 VPP,

f = 600 Hz to 20 KHz

5.0

.011

%

Symbol

Parameter

Conditions

Typ.

Max.

Units

Figure

Number

CIN

Control Pin Input Capacitance

VCC = 0V

2.3

pF

CIO-B

B Port Off Capacitance

VCC = 5.0V

6.5

pF

Figure 18

CIOA-ON A Port Capacitance When Switch Is Enabled

VCC = 5.0V

18.5

pF

Figure 19

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