Datasheet STG3856 Datasheet (ST)

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Page 1

Low voltage 1.0 Ω max dual SP3T switch

Features

■ High speed:

–t –t

■ Ultra low power dissipation:

–I

■ Low ON resistance V

–R

■ Wide operating voltage range:

–V

■ 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 (analog channel vs. GND):

HBM > 2 kV (MIL STD 883 method 3015)

= 0.3 ns (typ.) at VCC=3.0V

= 0.4 ns (typ.) at VCC=2.3V

=0.2µA (max.) at TA=85°C

=0V:

=1.0Ω (max. TA=25°C) at

=4.3V

=1.5Ω (max. TA=25°C) at

=3.0V

=1.8Ω (max. TA=25°C) at

=2.3V

(opr) = 1.65 V to 4.3 V single supply

= 2.3 to 4.3 V

STG3856

with break-before-make feature

QFN12L

Description

The STG3856 is a high-speed CMOS low voltage dual analog SP3T (single pole triple throw) switch or dual 3 : 1 multiplexer /demultiplexer switch fabricated in silicon gate C designed to operate from 1.65 V to 4.3 V, making this device ideal for portable applications.

The device offers very low ON resistance (< 1.0 Ω) at V

= 4.3 V. The disabling and

enabling of switches are done by setting the 1IN and 2IN control pins. Additional key features are fast switching speed, 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.

MOS technology. It is

Table 1. Device summary

Order code Temperature range Package Packaging

STG3856QTR -40°C to +85°C QFN12L (2.2 x 1.4 mm) Tape and reel

March 2010 Doc ID 11932 Rev 3 1/15

www.st.com

Page 2

Summary description STG3856

1 Summary description

1.1 Pin connections and description

Figure 1. Connection diagram (top through view)

IN1 VCC IN2

Table 2. Pin description

Pin Symbol Name and function

12, 10 1IN, 2IN Controls

1,2,3, 9,8,7 1S1, 1S2, 1S3, 2S1, 2S2, 2S3 Independent channels

4,6 D1, D2 Common channels

11 V

1.2 Truth table

1S1

1S2

1S3

45 6

D1 GND D2

2S1

2S2

2S3

Positive supply voltage

5 GND Ground (0 V)

Table 3. Truth table

1IN 2IN Switch state

L L High impedance

L H D1-1S1, D2-2S1

H L D1-1S2, D2-2S2

H H D1-1S3, D2-2S3

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Page 3

STG3856 Summary description

1.3 Internal schematic

Figure 2. Internal schematic

1.4 Input equivalent circuit

Figure 3. Input equivalent circuit

Doc ID 11932 Rev 3 3/15

Page 4

Maximum ratings STG3856

2 Maximum ratings

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

Supply voltage -0.5 to 5.5 V

DC Input voltage -0.5 to V

IKC

or I

GND

STG

1. Derate above 70ºC by 18.5mW/C.

DC Control input voltage -0.5 to 5.5 V

DC output voltage -0.5 to VCC+0.5 V

DC input diode current on control pin (V

<0V)

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

DC output diode current ± 20 mA

DC output current ± 150 mA

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

DC V

or ground current ± 100 mA

Power dissipation at T

Storage temperature -65 to 150 °C

Lead temperature (10 sec) 300 °C

=70ºC

(1)

+0.5 V

-50 mA

±300 mA

4/15 Doc ID 11932 Rev 3

Page 5

STG3856 Electrical characteristics

3 Electrical characteristics

Table 5. Recommended operating conditions

Symbol Parameter Value Unit

dt/dv

1. Truth table guaranteed: 1.2 V to 4.3 V.

Supply voltage

Input voltage 0 to VCC V

Control input voltage 0 to V

Output voltage 0 to V

Operating temperature -55 to 125 °C

Input rise and fall time control input

(1)

= 1.65 V to

= 3.0 to

4.3 V

2.7 V

1.4 to 4.3 V

0 to 20

ns/V

0 to 10

3.1 DC electrical characteristics

Table 6. DC electrical characteristics

Test condition Value

Symb

Parameter

High level input voltage

Low level input voltage

1.65 -

1.95

2.3 -

2.5

2.7 -

3.0

3.3 -

4.3

1.65 -

1.95

2.3 -

2.5

2.7 -

3.0

3.3 -

4.3

(V)

Min Typ Max Min Max Min Max

0.65 V

1.4 – – 1.4 – 1.4 –

1.5 – – 1.5 – 1.5 –

= 25°C -40 to 85°C -55 to 125°C

––

0.65 V

–

– – 0.40 – 0.40 – 0.40

– – 0.50 – 0.50 – 0.50

Unit

Doc ID 11932 Rev 3 5/15

Page 6

Electrical characteristics STG3856

Table 6. DC electrical characteristics (continued)

Test condition Value

Symb

Parameter

(V)

4.3

3.0 – 1.3 1.5 – 1.8 – – VS=0V

Switch ON resistance

2.7 – 1.5 1.8 – 2.2 – –

2.3 – 2.0 2.2 – 2.6 – –

1.8 – 2.5 3.0 – 3.6 – –

to V

IS= 100

1.65 – 3.3 4.0 – 4.8 – –

ΔR

ON resistance match between channels

2.7

VSat R

max

=100

4.3

FLAT

ON resistance flatness

(1)(2)

3.0 – – – – – – –

2.7 – 0.22 0.35 – 0.35 – –

2.3 – – – – – – –

=0V

to V

IS=100

1.65 – – – – – – –

OFF state

OFF

leakage current

4.3

=0.3

or 4 V

(nSN), (Dn)

CCLV

Input leakage current

Quiescent supply current

Quiescent supply current low voltage driving

0-4.3

1.65 -

4.3

to 4.3 V

IN=VC

GND

IN1

IN2

.65 V

IN1

=1.

IN2

80V

IN1

IN2

.60V

1. ΔRon = max |mSN-nSN|, where m = 1 and n = 2, N = 1..3

2. Flatness is defined as the difference between the maximum and minimum value of ON resistance as measured over the specified analog signal ranges.

= 25°C -40 to 85°C -55 to 125°C

Unit

Min Typ Max Min Max Min Max

–0.61.0 – 1.2 – –

–0.01– – – – – Ω

––– – – – –

––±20–

±10

––nA

––±0.1–±1– µA

––

±0.0

–±37±50 –

–±33±40 – ±50 – –

±0.

–

±10

–±1µA

––

µA

–±12±20 – ±30 – –

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Page 7

STG3856 Electrical characteristics

3.2 AC electrical characteristics

Table 7. AC electrical characteristics (CL = 35 pF, RL = 50 Ω, tr = tf ≤ 5ns)

Test condition Value

Symbol Parameter

PHL

OFF

Propagation delay

Turn-ON time

Turn-OFF time

PLH

Break-before -

make time

delay

Charge

injection

(V)

1.65 -

1.95

TA = 25°C -40 to 85°C -55 to 125°C

Min Typ Max Min Max Min Max

–0.45– – – – –

2.3 - 2.7 – 0.40 – – – – –

3.0 - 3.3 – 0.30 – – – – –

3.6 - 4.3 – 0.30 – – – – –

1.65 -

1.95

2.3 - 2.7

3.0 - 3.3 – 21 40 – 50 – –

=0.8V – 56 – – – – –

–3350 –60– –

=1.5V

3.6 - 4.3 – 19 40 – 50 – –

1.65 -

1.95

2.3 - 2.7

3.0 - 3.3 – 14 20 – 30 – –

=0.8 – 24 – – – –

–1725 –40– –

=1.5V

3.6 - 4.3 – 12 20 – 30 – –

1.65 -

1.95

2.3 - 2.7

3.0 - 3.3 10 18 30 – 40 – –

= 0.8 10 31 – – – – –

10 22 40 – 50 – –

=1.5V

3.6 - 4.3 10 7 25 – 35 – –

1.65 -

1.95

2.3 - 2.7 – 35 – – – – –

3.0 - 3.3 – 40 – – – – –

=100pF

GEN

=1MO

=0V =0Ω

–25– – – – –

3.6 - 4.3 – 55 – – – – –

Unit

Doc ID 11932 Rev 3 7/15

Page 8

Electrical characteristics STG3856

3.3 Analog switch

Table 8. Analog switch characteristics (CL=5pF, RL=50Ω, TA=25°C)

Test condition Value

Symbol Parameter

Off Isolation

IRR

Crosstalk 1.6 - 4.3

talk

Total harmonic

distortion

BW -3dB bandwidth 1.65 - 4.3 R

(1)

(V)

1.65 - 4.3

2.3 - 4.3

=1V

RMS

f=100kHz

VS= 1 V

RMS

f=100kHz

=600Ω

=2V

f = 20 Hz to 20 kHz

=50Ω – 100 – – – – – MHz

Min Typ Max Min Max Min Max

–-82– – – – –dB

–-84– – – – –dB

–0.03– – – – – %

Control pin

input

–5– –– – –

capacitance

Sn(OFF)

Sn(ON)

Sn port OFF capacitance

Sn port ON capacitance

3.3 f = 1 MHz – – – – – – –

D port capacitance

when switch is

3.3 f = 1 MHz – – – – – – –

enabled

1. OFF Isolation = 20 Log10 (VD/VS), VD= output, VS= input at off switch

TA= 25°C -40 to 85°C -55 to 125°C

Unit

8/15 Doc ID 11932 Rev 3

Page 9

STG3856 Package mechanical data

4 Package mechanical data

In order to meet environmental requirements, ST offers these devices in different grades of ECOPACK specifications, grade definitions and product status are available at: www.st.com. ECOPACK

Figure 4. QFN12L (2.2 x 1.4 mm) package outline

packages, depending on their level of environmental compliance. ECOPACK®

is an ST trademark.

All dimensions are in millimeters

Doc ID 11932 Rev 3 9/15

Page 10

Package mechanical data STG3856

Table 9. FN12L (2.2 x 1.4 mm) mechanical data

Millimeters Inches

Symbol

Min Typ Max Min Typ Max

A 0.50 0.55 0.60 0.019 0.021 0.023

A1 0 0.02 0.05 0 0.001 0.002

b 0.15 0.20 0.25 0.006 0.007 0.010

D 1.30 1.40 1.50 0.051 0.055 0.059

E 2.10 2.20 2.30 0.082 0.086 0.090

e 0.40 0.015

L 0.35 0.40 0.45 0.013 0.015 0.017

Figure 5. Footprint recommendation

10/15 Doc ID 11932 Rev 3

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STG3856 Package mechanical data

Figure 6. QFN12L (2.2 x 1.4 mm) reel for carrier tape information

Doc ID 11932 Rev 3 11/15

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Package mechanical data STG3856

Figure 7. QFN12L (2.2 x 1.4 mm) reel for carrier tape information

12/15 Doc ID 11932 Rev 3

Page 13

STG3856 Package mechanical data

Figure 8. QFN12L (2.2 x 1.4 mm) carrier tape information

Doc ID 11932 Rev 3 13/15

Page 14

Revision history STG3856

5 Revision history

Table 10. Document revision history

Date Revision Changes

22-Dec-2005 1 First draft.

23-Dec-2005 2 Few changes.

15-Mar-2010 3

The document has been reformatted, added tape and reel information.

14/15 Doc ID 11932 Rev 3

Page 15

STG3856

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Doc ID 11932 Rev 3 15/15