Datasheet

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SBFS019A – JANUARY 1988 — REVISED OCTOBER 2003

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Products conform to specifications per the terms of Texas Instruments

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MPC508A

MPC509A

FUNCTIONAL DIAGRAMS

Single-Ended 8-Channel/Differential 4-Channel

CMOS ANALOG MULTIPLEXERS

FEATURES

● ANALOG OVERVOLTAGE PROTECTION: 70V

● NO CHANNEL INTERACTION DURING

OVERVOLTAGE

● BREAK-BEFORE-MAKE SWITCHING

● ANALOG SIGNAL RANGE:

±15V

● STANDBY POWER: 7.5mW typ

● TRUE SECOND SOURCE

Level

Shift

1kΩ

Overvoltage

Clamp and

Signal

Isolation

Ref

Decoder/

Driver

NOTE: (1) Digital

Input Protection.

In 1A

In 1B

In 4B

MPC509A

Out A

1kΩ

In 4A

Out B

(1) (1) (1)

Level

Shift

1kΩ

Overvoltage

Clamp and

Signal

Isolation

Ref

Decoder/

Driver

NOTE: (1) Digital

Input Protection.

In 1

In 2

In 8

MPC508A

(1)

Out

(1)

DESCRIPTION

The MPC508A is an 8-channel single-ended analog

multiplexer and the MPC509A is a 4-channel differential

multiplexer.

The MPC508A and MPC509A multiplexers have input

overvoltage protection. Analog input voltages may exceed

either power supply voltage without damaging the device or

disturbing the signal path of other channels. The protection

circuitry assures that signal fidelity is maintained even under

fault conditions that would destroy other multiplexers. Analog

inputs can withstand 70V

signal levels and standard ESD

tests. Signal sources are protected from short circuits should

multiplexer power loss occur; each input presents a 1kΩ

resistance under this condition. Digital inputs can also sustain

continuous faults up to 4V greater than either supply voltage.

These features make the MPC508A and MPC509A ideal for

use in systems where the analog signals originate from

external equipment or separately powered sources.

The MPC508A and MPC509A are fabricated with Burr-

Brown’s dielectrically isolated CMOS technology. The

multiplexers are available in plastic DIP and plastic SOIC

packages. Temperature range is –40°C to +85°C.

C508

PC509

Summary of content (18 pages)

PAGE 1
MP C50 MPC508A MPC509A 8 MP C50 9 SBFS019A – JANUARY 1988 — REVISED OCTOBER 2003 Single-Ended 8-Channel/Differential 4-Channel CMOS ANALOG MULTIPLEXERS FEATURES FUNCTIONAL DIAGRAMS ● ANALOG OVERVOLTAGE PROTECTION: 70VPP ● NO CHANNEL INTERACTION DURING OVERVOLTAGE ● BREAK-BEFORE-MAKE SWITCHING ● ANALOG SIGNAL RANGE: ±15V ● STANDBY POWER: 7.
PAGE 2
ELECTRICAL CHARACTERISTICS Supplies = +15V, –15V; VAH (Logic Level High) = +4.0V, VAL (Logic Level Low) = +0.8V, unless otherwise specified.
PAGE 3
PIN CONFIGURATIONS Top View Top View A0 1 16 A1 A0 1 16 A1 En 2 15 A2 En 2 15 –VSUPPLY 3 14 Ground –VSUPPLY 3 14 +VSUPPLY In 1 4 13 In 1A 4 13 In 1B In 2 5 12 In 5 In 2A 5 12 In 2B In 3 6 11 In 6 In 3A 6 11 In 3B In 4 7 10 In 7 In 4A 7 10 In 4B Out 8 9 In 8 Out A 8 9 +VSUPPLY MPC508A (Plastic) Ground Out B MPC509 A (Plastic) TRUTH TABLES MPC508A MPC509A A2 A1 A0 EN "ON" CHANNEL X L L L L H H H H X L L H H L L H H X L H L H L H L H L H H H H H
PAGE 4
TYPICAL PERFORMANCE CURVES Typical at +25°C unless otherwise noted. SETTLING TIME vs SOURCE RESISTANCE FOR 20V STEP CHANGE CROSSTALK vs SIGNAL FREQUENCY 1k Crosstalk (% of Off Channel Signal) 1 Settling Time (µs) 100 To ±0.01% 10 To ±0.1% 1 0.1 0.01 0.1 Rs = 100kΩ Rs = 10kΩ 0.01 Rs = 1kΩ Rs = 100Ω 0.001 0.0001 0.
PAGE 5
Differential Multiplexer Static Accuracy DISCUSSION OF PERFORMANCE DC CHARACTERISTICS The static or dc transfer accuracy of transmitting the multiplexer input voltage to the output depends on the channel ON resistance (RON), the load impedance, the source impedance, the load bias current and the multiplexer leakage current.
PAGE 6
Source Characteristics • • • The source impedance unbalance will produce offset, common-mode and channel-to-channel gain-scatter errors. Use sources which do not have large impedance unbalances if at all possible. RSA Node A CSA RCMS Source CSB Keep source impedances as low as possible to minimize resistive loading errors. CCMS Minimize ground loops. If signal lines are shielded, ground all shields to a common point at the system analog common.
PAGE 7
Factors which will degrade multiplexer and system DC CMR are: • • Amplifier bias current and differential impedance mismatch Load impedance mismatch • Multiplexer impedance and leakage current mismatch • Load and source common-mode impedance AC CMR roll off is determined by the amount of commonmode capacitances (absolute and mismatch) from each signal line to ground.
PAGE 8
PERFORMANCE CHARACTERISTICS AND TEST CIRCUITS Unless otherwise specified: TA = +25, VS = ±15V, VAM = +4V, VAL = 0.8V. ON RESISTANCE vs ANALOG INPUT SIGNAL, SUPPLY VOLTAGE 100µA RON = V2/100µA V2 In Out VIN NORMALIZED ON RESISTANCE vs SUPPLY VOLTAGE ON RESISTANCE vs ANALOG INPUT VOLTAGE 1.6 1.4 1.3 Normalized On Resistance (Referred to Value at ±15V) On Resistance (kΩ) 1.2 1.1 TA = +25°C 1.0 TA = –55°C 0.9 ±125°C > TA > –55°C VIN = +5V 1.5 TA = +125°C 0.8 1.4 1.3 1.2 1.1 1.0 0.9 0.7 0.8 0.
PAGE 9
PERFORMANCE CHARACTERISTICS AND TEST CIRCUITS (CONT) LEAKAGE CURRENT vs TEMPERATURE En +0.8V Out Out ±10V ID (Off) A0 ± A ± 10V A En A1 ID (On) ±10V 10V +4.0V Leakage Current 100nA Out IS (Off) A ±10V En Off Output Current ID (Off) 10nA On Leakage Current ID (On) 1nA Off Input Leakage Current IS (Off) +0.8V 10V ± 100pA 10pA 25 NOTE: (1) Two measurements per channel: +10V/–10V and –10V/+10V. (Two measurements per device for ID (Off): +10V/–10V and –10V/+10V).
PAGE 10
PERFORMANCE CHARACTERISTICS AND TEST CIRCUITS (CONT) ACCESS TIME vs LOGIC LEVEL (High) 1000 +15V A2 VA A1 A0 50Ω +4V 900 +V In 1 In 2 Thru In 7 MPC 508A(1) In 8 En GND –10V +10V Access Time (ns) VREF Probe –V Out 10MΩ –15V 14pF 800 700 600 500 400 300 3 4 5 6 NOTE: (1) Similar connection for MPC509A. 7 8 9 10 11 12 13 14 15 Logic Level High (V) ACCESS TIME WAVEFORM VAM 4.
PAGE 11
If the +15V and/or –15V supply voltage is absent or shorted to ground, the MPC509A and MPC508A multiplexers will not be damaged; however, some signal feedthrough to the output will occur. Total package power dissipation must not be exceeded. For best settling speed, the input wiring and interconnections between multiplexer output and driven devices should be kept as short as possible.
PAGE 12
PACKAGE OPTION ADDENDUM www.ti.
PAGE 13
PACKAGE OPTION ADDENDUM www.ti.com 11-Apr-2013 Pb-Free (RoHS): TI's terms "Lead-Free" or "Pb-Free" mean semiconductor products that are compatible with the current RoHS requirements for all 6 substances, including the requirement that lead not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered at high temperatures, TI Pb-Free products are suitable for use in specified lead-free processes.
PAGE 14
PACKAGE MATERIALS INFORMATION www.ti.com 24-Jul-2013 TAPE AND REEL INFORMATION *All dimensions are nominal Device Package Package Pins Type Drawing SPQ Reel Reel A0 Diameter Width (mm) (mm) W1 (mm) B0 (mm) K0 (mm) P1 (mm) W Pin1 (mm) Quadrant MPC508AU/1K SOIC DW 16 1000 330.0 16.4 10.75 10.7 2.7 12.0 16.0 Q1 MPC509AU/1K SOIC DW 16 1000 330.0 16.4 10.75 10.7 2.7 12.0 16.
PAGE 15
PACKAGE MATERIALS INFORMATION www.ti.com 24-Jul-2013 *All dimensions are nominal Device Package Type Package Drawing Pins SPQ Length (mm) Width (mm) Height (mm) MPC508AU/1K SOIC DW 16 1000 367.0 367.0 38.0 MPC509AU/1K SOIC DW 16 1000 367.0 367.0 38.
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