ST STG5678 User Manual

Features

■ Distortion-free negative signal throughput

down to V

■ Wide operating voltage range:

V

(opr) = 1.65 to 4.5 V single supply

CC

■ Ultra low power dissipation:

I

= 0.2 µA (max.) at TA = 85 °C

CC

■ Low ON resistance:

R

= 0.5 Ω (max. TA = 25 °C) at VCC = 3.6 V

ON

■ 4.3 V tolerant and 1.8 V compatible threshold

on digital control input at V

■ Latch-up performance exceeds 300 mA

(JESD 17)

■ ESD performance:

– 2000-V human-body model

(IEC61340-3-1:2002 level 2)

– 200-V machine model

(IEC61340-3-2 level M2)

– 1000-V charge device model

(JESD22-C101-A level III)

- 5.5 V

CC

= 1.65 V to 4.5 V

CC

STG5678

Low voltage dual SPDT switch

with negative rail capability

Flip-chip 12

Description

The STG5678 is a high-speed CMOS low voltage
dual analog SPDT (single pole dual throw) switch
or 2:1 multiplexer/de-multiplexer switch fabricated
in silicon gate CMOS technology. It is designed to
operate from 1.65 to 4.5 V.

The device is capable of handling signals with
negative voltages from V
any distortion.

- 5.5 V to VCC without

CC

Additional key features are fast switching speed,
break-before-make delay time and ultra low power
consumption. All inputs and outputs are equipped
with protection circuits against static discharge,
giving them ESD immunity and transient excess
voltage.

Table 1. Device summary

Order code Package Packaging

STG5678BJR Flip-chip 12 Tape and reel

STG5678CJR Flip-chip 12 (with back side coating) Tape and reel

June 2010 Doc ID 14580 Rev 3 1/23

www.st.com

23

Contents STG5678

Contents

1 Pin settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

1.1 Pin connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

1.2 Pin description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

2 STG5678 device summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

3 Maximum rating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

3.1 Recommended operating conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

4 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

5 Test circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

6 Application hint . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

6.1 Input signal dynamic range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

7 Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

8 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

2/23 Doc ID 14580 Rev 3

STG5678 Pin settings

1 Pin settings

1.1 Pin connection

Figure 1. Pin connection (bump side view)

See note 1

1. Note 1: bump A1 is distinguished by a circular dot on the top-side. There is no circular dot on the bump­side.

A B C D

A1

A2

2

A3

1.2 Pin description

Table 2. Pin assignment

Pin number Symbol Name and function

B1

B2

B3

C1

C2

C3

D1

D2

D3

A B C D

1SEL

NC

2

2SEL

1S1

GND

2S1

D1

GND

D2

1S2

V

2S2

CC

A1 1SEL Selection control for switch 1

A2 NC No connection

A3 2SEL Selection control for switch 2

B1 1S1 Independent channel for switch 1

B2 GND Ground (0 V)

B3 2S1 Independent channel for switch 2

C1 D1 Common channel for switch 1

C2 GND Ground (0 V)

C3 D2 Common channel for switch 2

D1 1S2 Independent channel for switch 1

D2

V

CC

Positive supply voltage

D3 2S2 Independent channel for switch 2

Doc ID 14580 Rev 3 3/23

STG5678 device summary STG5678

2 STG5678 device summary

Figure 2. Functional diagram

D2

D2

D1

D1

Figure 3. Input equivalent circuit

D

2SEL

2SEL

1SEL

1SEL

2S1

2S1

2S2

2S2

1S1

1S1

1S2

1S2

S2

SEL

Table 3. Truth table

SEL Switch S1 Switch S2

HONOFF

LOFF

1. High impedance

4/23 Doc ID 14580 Rev 3

(1)

S1

(1)

ON

STG5678 Maximum rating

3 Maximum rating

Stressing the device above the rating listed in the “absolute maximum ratings” table may
cause permanent damage to the device. These are stress ratings only and operation of the
device at these or any other conditions above those indicated in the operating sections of
this specification is not implied. Exposure to absolute maximum rating conditions for
extended periods may affect device reliability.

Table 4. Absolute maximum ratings

Symbol Parameter Value Unit

V

V

V

I

I

I

I

CC

I

GND

P

T

1. Derate above 70 ºC by 18.5 mW/C

Supply voltage -0.5 to 5.5 V

CC

V

DC input voltage

I

DC control input voltage -0.5 to 5.5 V

IC

DC output voltage

O

DC input diode current on control pin (V

IKC

DC input diode current (VIN<0V) ±50 mA

I

IK

DC output diode current ±20 mA

OK

DC output current ±150 mA

I

O

DC output current peak (pulse at 1ms, 10% duty cycle) ±400 mA

OP

or

DC VCC or ground current ±100 mA

Power dissipation at TA = 70°C

D

Storage temperature -65 to 150 °C

stg

Lead temperature (10 sec) 300 °C

T

L

(1)

- 6.0) to

- (V

CC

VCC + 0.5

- 6.0 V) to

- (V

CC

+ 0.5

V

CC

<0V) -50 mA

SEL

1120 mW

V

V

Doc ID 14580 Rev 3 5/23

Maximum rating STG5678

3.1 Recommended operating conditions

Table 5. Recommended operating conditions

Symbol Parameter Value Unit

V

CC

V

I

V

IC

V

O

T

op

dt/dv

Supply voltage 1.65 to 4.5 V

Input voltage VCC -5.5 to V

CC

V

Control input voltage 0 to 4.5 V

Output voltage VCC -5.5 to V

CC

V

Operating temperature -40 to 85 °C

= 1.65 to 2.7 V 0 to 20

V

Input rise and fall time control
input

CC

= 3.0 to 4.5 V 0 to 10

V

CC

ns/V

6/23 Doc ID 14580 Rev 3

STG5678 Electrical characteristics

4 Electrical characteristics

Table 6. DC specifications

Test conditions Value

Symbol Parameter

V

CC

(V)

1.65

−1.95 0.9 – – 0.9 –

2.25

V

IH

High level
input voltage

−2.7 0.9 – – 0.9 –

−4.3 1.0 – – 1.0 –

3.0

4.5 1.1 – – 1.1 –

1.65 −1.95 – – 0.6 – 0.6

2.25

V

IL

Low level
input voltage

−2.7 – – 0.6 – 0.6

3.0

−4.3 – – 0.7 – 0.7

4.5 – – 0.7 – 0.7

1.8

2.7 – 0.77 0.90 – 1.2

3.0 – 0.64 0.80 – 1.0

ON

Switch ON
resistance

R

3.6 – 0.51 0.65 – 1.0

1.8

2.7 – 20 – – 500

3.0 – 15 – – 500

3.6 – 15 – – 500

ΔR

ON

ON
resistance
match
between
channels

(1)

1.8

R

FLAT

ON
resistance
flatness

(2)

2.7 – 0.50 – – 0.8

3.0 – 0.40 – – 0.6

3.6 – 0.25 – – 0.5

Sn OFF

OFF

state
leakage

3.6

I

current

Sn ON state

I

ON

leakage

3.6

current

V

= V

S

CC

to VCC;

= 100 mA

I

S

at RON max

V

S

= 100 mA

I

S

V

= V

S

CC

to V

;

CC

= 100 mA

I

S

= -1.2 to

V

S

3.6 V
= 3.6 to

V

D

-1.2 V

= -1.2 to

V

S

3.6 V
= open

V

D

−5.5 V

−5.5 V

= 25 °C -40 to 85 °C

T

A

Min Typ Max Min Max

–3.804.60–7.0

– 50 – – 500

–3.5– –6.6

– -0.55 – -2 1 µA

– -0.55 – -2 1 µA

Unit

V

V

Ω

mΩ

Ω

Doc ID 14580 Rev 3 7/23