Datasheet

ManualsBrandsFAIRCHILD SEMICONDUCTOR ManualsInterface ICsInterface IC - analogue switches MicroPak™ 8

November 2013

FSA1256(A) / FSA1257(A) / FSA1258(A) Rev. 1.0.9

FSA1256(A) / FSA1257(A) / FSA1258(A) — Low-R

Low-Voltage, Dual SPST Analog Switch with Low-I

CCT

“A” Option

FSA1256(A) / FSA1257(A) / FSA1258(A)

Low-R

Low-Voltage, Dual SPST Analog Switch

with Low-I

CCT

“A” Option

Features

 FSA1256A, FSA1257A, FSA1258A Feature Low

CCT

when S Input is Lower than V

 Maximum 1.1 Ω On Resistance (R

) for

4.5 V Supply

 0.4 Ω Max. R

Flatness for 4.5 V Supply

 Space-Saving Pb-Free MicroPak™ Packaging

 Broad V

Operating Range:

- FSA1256, FSA1257, FSA1258: 1.65 V to 5.5 V

- FSA1256A, FSA1257A, FSA1258A: 2.7 V to

5.5 V

 Fast Turn-On and Turn-Off Times

 FSA1258, FSA1258A Feature Break-Before-Make

Enable Circuitry

 Over-Voltage Tolerant TTL-Compatible Control Input

Applications

 Cell Phone, PDA, Digital Camera, and Notebook

 LCD Monitor, TV, and Set-Top Box

Description

The FSA1256, FSA1256A, FSA1257, FSA1257A,

FSA1258, and FSA1258A are high performance dual

Single-Pole / Single-Throw (SPST) analog switches. All

devices feature ultra-low R

of 1.1 Ω maximum at 4.5 V

. The FSA1256, FSA1257, and FSA1258 operate

over a wide V

range of 1.65 V to 5.5 V. The

FSA1256A, FSA1257A, and FSA1258A operation range

is 2.7 V to 5.5 V. These devices are fabricated with sub-

micron CMOS technology to achieve fast switching

speeds and are designed for break-before-make

operation. The select input is TTL level compatible. The

FSA1256 and FSA1256A feature two Normally Open

(NO) switches. The FSA1257 and FSA1257A feature

two Normally Closed (NC) switches. The FSA1258 and

FSA1258A have one NO switch and one NC switch.

IMPORTANT NOTE:

For additional performance information, please contact

analogswitch@fairchildsemi.com

Ordering Information

Part Number Top Mark Package Description Packing Method

FSA1256L8X EB 8-Lead, MicroPak™, 1.6 mm Wide 5000 Units Tape and Reel

FSA1256AL8X FN 8-Lead, MicroPak, 1.6 mm Wide 5000 Units Tape and Reel

FSA1257L8X EC 8-Lead, MicroPak, 1.6 mm Wide 5000 Units Tape and Reel

FSA1257AL8X FP 8-Lead, MicroPak, 1.6 mm Wide 5000 Units Tape and Reel

FSA1258L8X ED 8-Lead, MicroPak, 1.6 mm Wide 5000 Units Tape and Reel

FSA1258AL8X FS 8-Lead, MicroPak, 1.6 mm Wide 5000 Units Tape and Reel

MicroPak™ is a trademark of Fairchild Semiconductor Corporation.

Summary of content (10 pages)

PAGE 1
FSA1256(A) / FSA1257(A) / FSA1258(A) Low-RON Low-Voltage, Dual SPST Analog Switch with Low-ICCT “A” Option Features Description  FSA1256A, FSA1257A, FSA1258A Feature Low ICCT when S Input is Lower than VCC  Maximum 1.1 Ω On Resistance (RON) for 4.5 V Supply    0.4 Ω Max. RON Flatness for 4.5 V Supply The FSA1256, FSA1256A, FSA1257, FSA1257A, FSA1258, and FSA1258A are high performance dual Single-Pole / Single-Throw (SPST) analog switches. All devices feature ultra-low RON of 1.1 Ω maximum at 4.
PAGE 2
Figure 1. FSA1256, FSA1256A Figure 2. FSA1257, FSA1257A Truth Tables Control Input (s) Function Control Input (s) Function LOW Logic Level Disconnect LOW Logic Level A Connected to B HIGH Logic Level A Connected to B HIGH Logic Level Disconnected Vcc 1 1S 2B 2 2A 3 8 7 1A 6 1B 5 2S 4 GND Figure 3.
PAGE 3
Stresses exceeding the absolute maximum ratings may damage the device. The device may not function or be operable above the recommended operating conditions and stressing the parts to these levels is not recommended. In addition, extended exposure to stresses above the recommended operating conditions may affect device reliability. The absolute maximum ratings are stress ratings only. Symbol VCC Parameter Supply Voltage (1) VS Switch Voltage Vin (1) Input Voltage Min. Max. Units -0.5 6.0 V -0.
PAGE 4
All typical values are at 25ºC unless otherwise specified. The 1.65 V to 1.95 V range applies to FSA1256, FSA1257, and FSA1258 only. Symbol Parameter VCC (V) Conditions TA=-40 to +85°C TA=+25°C Min. Typ. Max. Min. VIH VIL IIN INO(0FF) , INC(0FF) RON ∆RON RFLAT(ON) Input Voltage High (3) 4.5 to 5.5 2.4 2.7 to 3.6 2.0 1.65 to 1.95 0.9 Max. V 4.5 to 5.5 0.8 2.7 to 3.6 0.4 FSA1256, FSA1257, FSA1258 Only 2.7 to 3.6 0.6 1.65 to 1.95 0.4 Control Input Leakage (S) VIN=0 to VCC 1.
PAGE 5
All typical values are at 25ºC unless otherwise specified. The 1.65 V to 1.95 V range applies to FSA1256, FSA1257, and FSA1258 only. Symbol Parameter VCC (V) Conditions Min. tON tOFF tBBM Q OIRR Turn-On Time Turn-Off Time (7) (7) Break-Before(7) Make Time Charge (7) Injection Off Isolation (7) TA=-40 to +85°C TA=+25ºC Typ. Unit Figure ns Figure 8 ns Figure 8 ns Figure 9 pC Figure 13 Max. Min. Max. 1B or 2B=3.0 V, RL=50 Ω, CL=35 pF 4.5 to 5.5 10 35 40 1B or 2B=1.
PAGE 6
V ON B0,B1 A I A(OFF) NC V SW A I ON GND Select RON = VON / ION Figure 4. V IN GND Select GND VS = 0 or VCC VS = 0 or Vcc On Resistance Figure 5. Off Leakage (Ports Tested Separately) nBn nA I A(ON) NC V IN A GND RS V OUT GND V IN Select V Sel GND VS =0 orVcc Figure 6. RL CL GND On Leakage Figure 7. Test Circuit Load tFALL = 2.5ns tRISE = 2.5ns VCC 90% Input - V Sel 10% GND 90% VCC /2 VCC /2 10% VOH 90% 90% Output-- V OUT VOL Figure 8.
PAGE 7
tRISE=2.5ns VCC 90% B0nB1 Input - VSel nA VSW VCC/2 10% GND CL VIN 0V VOUT RL VOUT GND GND 0.9*VOUT 0.9*VOUT RS tD V Sel GND RL and CL are functions of the application environment (50, 75, or 100 ). CL includes test fixture and stray capacitance. Figure 9. Break-Before-Make Interval Timing Network Analyzer RS V IN VS GND GND VS GND V OUT GND RT GND RS and RT are functions of the application environment (50, 75, or 100 ). Figure 10.
PAGE 8
Network Analyzer RS V IN VS GND GND VSel GND VOUT GND RT RT GND GND RS and RT are functions of the application environment (50, 75, or 100 ). Figure 12. Crosstalk = 20 Log (VOUT / VIN) Adjacent Channel Crosstalk Generator VCC B RS VS VIN Input – VSEL mA nSn On Off 0V VOUT CL GND Off ∆VOUT GND VOUT VSEL Figure 13. Charge Injection Test B0,B1 Capacitance Meter Figure 14.
PAGE 9
0.10 2X C A 1.6 B 1.6 INDEX AREA 0.10 2X C TOP VIEW 0.55 MAX 0.05 0.05 0.00 DETAIL A 8X(0.09) C 8X 0.05 Recommended Landpattern C (0.20) 1.0 2 1 4 (0.1) C 8 0.35 0.25 3X(0.2) 0.35 0.25 0.5 3 4 7 6 5 (0.15) 0.15 8X 0.25 0.35 0.25 0.10 0.05 C A B C DETAIL A PIN #1 TERMINAL SCALE: 2X BOTTOM VIEW Notes: 1. PACKAGE CONFORMS TO JEDEC MO-255 VARIATION UAAD 2. DIMENSIONS ARE IN MILLIMETERS 3. DRAWING CONFORMS TO ASME Y.14M-1994 4. PIN 1 FLAG, END OF PACKAGE OFFSET 5.
PAGE 10
FSA1256(A) / FSA1257(A) / FSA1258(A) — Low-RON Low-Voltage, Dual SPST Analog Switch with Low-ICCT © 2004 Fairchild Semiconductor Corporation FSA1256(A) / FSA1257(A) / FSA1258(A) Rev. 1.0.9 www.fairchildsemi.