Datasheet

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iC-VX

3-CHANNEL DIFFERENTIAL LINE DRIVER

Rev C1, Page 1/11

SO16W TSSOP20

thermal pad

FEATURES APPLICATIONS

° 6 current-limited and short-circuit-proof push-pull driver

stages in complementary configuration

° Guaranteed driver current can be set to 30mA or 100mA

° Outputs compatible to TTL at low load current

° Integrated free-wheeling diodes

° Short switching times and high slew rate

° Schmitt trigger inputs with integrated pull-up current sources

and clamping diodes

° Inputs compatible to TTL and CMOS levels

° Operating points can be shifted by separate feed of inputs

° On-chip thermal shutdown with hysteresis

° Extended temperature range of -25..85EC

° Line driver for 24V control

engineering

PACKAGES

BLOCK DIAGRAM

iC-Haus GmbH Tel +49-6135-9292-0

Integrated Circuits Fax +49-6135-9292-192

Am Kuemmerling 18, D-55294 Bodenheim http://www.ichaus.com

CHAN1

CHAN2

CHAN3

THERMAL SHUTDOWN

BIAS

VSUB

E11

PROG

VEE

VB2

NA1

NA2 11

NA3 9

VB1

VCC

iC-VX

SO16W

Summary of content (11 pages)

PAGE 1
iC-VX 3-CHANNEL DIFFERENTIAL LINE DRIVER Rev C1, Page 1/11 FEATURES APPLICATIONS ° ° ° ° ° ° ° ° ° ° ° 6 current-limited and short-circuit-proof push-pull driver stages in complementary configuration Guaranteed driver current can be set to 30mA or 100mA Outputs compatible to TTL at low load current Integrated free-wheeling diodes Short switching times and high slew rate Schmitt trigger inputs with integrated pull-up current sources and clamping diodes Inputs compatible to TTL and CMOS levels Operating
PAGE 2
iC-VX 3-CHANNEL DIFFERENTIAL LINE DRIVER Rev C1, Page 2/11 DESCRIPTION The device iC-VX is a monolithic, 3-channel line driver with complementary outputs for 24V applications. The Schmitt trigger inputs contain pull-up current sources and run on separate operating voltages. Their reference potential can be adjusted in the range of the output stage supply voltage to adapt the input threshold voltage for various applications.
PAGE 3
iC-VX 3-CHANNEL DIFFERENTIAL LINE DRIVER Rev C1, Page 3/11 ABSOLUTE MAXIMUM RATINGS Values beyond which damage may occur; device operation is not guaranteed. Item Symbol Parameter Conditions Fig. Unit Min. Max. G001 VCC-VEE Supply Voltage for Schmitt Trigger Inputs 0 12 V G002 VB1, VB2 Positive Supply Voltage for Output Drivers 0 32 V G003 VT 0 30 V 0 2 V -300 300 mA -8 8 mA 1 kV Bias Supply Voltage G004 V(PROG) Voltage at PROG G005 I(A,NA) Output Current in A1..3, NA1..
PAGE 4
iC-VX 3-CHANNEL DIFFERENTIAL LINE DRIVER Rev C1, Page 4/11 ELECTRICAL CHARACTERISTICS Operating Conditions: VEE= VSUB= 0V, VB= 4.5..30V, VT= VCC= 5V ±10%, Tj= -25..125°C, unless otherwise noted Item Symbol Parameter Conditions Tj °C Fig. Unit Min. Typ. Max. Total Device 001 VCCVEE Permissible Supply Voltage Range for Inputs 4.5 11 V 002 VCC Permis. Supply Voltage VCC 4.5 VB V 003 VEE Permis. Supply Voltage VEE 0 VB -4.5V V 004 I(VCC) Supply Current in VCC 2.4 mA mA mA 0.5 1.35 0.
PAGE 5
iC-VX 3-CHANNEL DIFFERENTIAL LINE DRIVER Rev C1, Page 5/11 ELECTRICAL CHARACTERISTICS Operating Conditions: VEE= VSUB= 0V, VB= 4.5..30V, VT= VCC= 5V ±10%, Tj= -25..125°C, unless otherwise noted Item Symbol Parameter Conditions Tj °C Fig. Unit Min. Typ. Max. Driver Outputs A1..3, NA1..3 (continued) 106 Vs()hi Saturation Voltage hi (driver capability 30mA) PROG open, Vs()hi= VB-V(A,NA); I(A,NA)= -3mA I(A,NA)= -10mA I(A,NA)= -30mA 0.9 1.0 1.
PAGE 6
iC-VX 3-CHANNEL DIFFERENTIAL LINE DRIVER Rev C1, Page 6/11 APPLICATIONS INFORMATION Line drivers for control engineering couple digital signals with TTL or CMOS levels via lines to 24V systems. Due to possible line short circuits, the drivers are current-limited and shut down in the event of overtemperature. The device iC-VX permits the operating points of the Schmitt trigger inputs to be shifted with the supply voltages VCC and VEE, thus within the range of the output stage supply voltage VB.
PAGE 7
iC-VX 3-CHANNEL DIFFERENTIAL LINE DRIVER Rev C1, Page 7/11 EXAMPLE 1: Short lines Short lines of 5m, for example, are approximations of capacitive load for the iC; no adjustment of characteristic impedance is required. With each switching slope changeover losses of Pc= 1/2 VB × I(A) per channel occur in the iC. The load capacity is reloaded with the guaranteed driver current I(A)$ 30mA.
PAGE 8
iC-VX 3-CHANNEL DIFFERENTIAL LINE DRIVER Rev C1, Page 8/11 EXAMPLE 2: Long lines Lines which are relatively long, for example 100m, require a higher driver current and an adapter. An appropriate 30S series resistor at the driver output ensures short-circuit strength and a suitable division of the power loss to resistor and iC. The PROG pin at VSUB selects the high driver current of 100mA. In this case the driver supply must be channeled via VB1 and VB2.
PAGE 9
iC-VX 3-CHANNEL DIFFERENTIAL LINE DRIVER Rev C1, Page 9/11 The average power loss in the iC and the resistors declines when the thermal shutdown interrupts the driver outputs due to abnormal rising chip temperature. The installed series resistances should suit for the estimated power dissipation to avoid overload due to permanent line short-circuits. If the drivers are operated at low power supply, e.g.
PAGE 10
iC-VX 3-CHANNEL DIFFERENTIAL LINE DRIVER Rev C1, Page 10/11 DEMO BOARD The device iC-VX with SO16W package is equipped with a Demo Board for test purposes. The following figures show the wiring as well as the top and bottom layout of the test PCB.
PAGE 11
iC-VX 3-CHANNEL DIFFERENTIAL LINE DRIVER Rev C1, Page 11/11 ORDERING INFORMATION Type Package Order designation iC-VX SO16W TSSOP20tp 4.4mm iC-VX SO16W iC-VX TSSOP20 VX Demo Board VX DEMO For information about prices, terms of delivery, options for other case types, etc., please contact: iC-Haus GmbH Am Kuemmerling 18 D-55294 Bodenheim GERMANY Tel +49-6135-9292-0 Fax +49-6135-9292-192 http://www.ichaus.com This specification is for a newly developed product.