LTC1380CS View Datasheet(PDF) - Linear Technology

Part Name

Description

MFG CO.

LTC1380CS

Single-Ended 8-Channel/Differential 4-Channel Analog Multiplexer with SMBus Interface

Linear Technology 

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TEST CIRCUITS

LTC1380/LTC1393

SCL

SDA

1V

SCL

SDA

LTC1380

S

D

VD

RL

1k

CL

35pF

VC

1/2 • (VCC + VEE)

1.5V

SCL

0.4V

1.5V

SDA

0.4V

VD VC

STOP CONDITION

WITH EN = 1

STOP CONDITION

WITH EN = 0

1V

1V

tON

20%

tr < 20ns, tf < 20ns

tOFF

80%

1380/93 F01

Figure 1. Switch tON/tOFF Propagation Delay from SMBus STOP Condition

SCL SCL

SDA SDA

LTC1380

VS

200mVP-P

100kHz

S

D

VC1

1/2 • (VCC + VEE)

VD

RL

1k

OIRR = 20LOG10 (VD/ VS)

WHERE VS AND VD ARE THE

AC VOLTAGE COMPONENTS

AT S AND D

VC2

1/2 • (VCC + VEE)

1380/93 F02

Figure 2. Off-Channel Isolation (OIRR) Test

SCL

SDA

VC

SCL

SDA

LTC1380

S

D

CHARGE INJECTION

∆Q = ∆VD • CL

VD

CL

1000pF

1.5V

SCL

0.4V

1.5V

SDA

0.4V

VD VC

STOP CONDITION

WITH EN = 1

∆VD

Figure 3. Charge Injection Test

STOP CONDITION

WITH EN = 0

∆VD

1380/93 F03

7

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