IC-DL_技术文档

iC-DL

3-CHANNEL DIFFERENTIAL LINE DRIVER

Rev B1, Page 1/9

FEATURES

APPLICATIONS

♦ 6 current-limited and short-circuit-proof push-pull drivers

♦ Differential 3-channel operation selectable

♦ Integrated impedance adaption for 30 to 140 Ω lines

♦ Wide power supply range from 4 to 40 V

♦ Line drivers for 24 V control

engineering

♦ Linear scales and encoders

♦ MR sensor systems

♦ 200 mA output current (at VB = 24 V)

♦ Low output saturation voltage (< 0.4 V at 30 mA)

♦ Compatible with TIA/EIA standard RS-422

♦ Tristate switching of outputs enables use in buses

♦ Short switching times and high slew rates

♦ Low static power dissipation

♦ Schmitt trigger inputs with pull-down resistors, TTL and CMOS

compatible; voltage-proof up to 40 V

PACKAGES

♦ Thermal shutdown with hysteresis

♦ Error message trigger input TNER

♦ Open-drain error output NER, active low with excessive chip

temperature and undervoltage at VCC or VB

♦ Option: Extended temperature range from -40 to 125 °C

QFN28 5 x 5 mm²

BLOCK DIAGRAM

VCC

ERROR DETECTION

NER

MODE

TNER

ENA

PLC

1

UNDERVOLTAGE &

OVERTEMPERATURE

&

VB1

A1

vert. 8V/div. hor. 2µs/div

E1

E2

1

0

A2

VB2

A3

E3

1

0

A4

VB3

A5

E4

E5

1

0

A6

E6

LINE 100 m

DIFF

iC-DL

GND1

GND2

GND3 GND4

http://www.ichaus.com

iC-DL

3-CHANNEL DIFFERENTIAL LINE DRIVER

Rev B1, Page 2/9

DESCRIPTION

iC-DL is a fast line driver with six independent chan- iC-DL monitors supply voltages VB and VCC and the

nels and integrated impedance adaptation for 30 to chip temperature, switching all output stages to high

140 Ω lines.

impedance in the event of error and set NER activ

low. In addition, the device also monitors voltage

Channels are paired for differential 3-channel oper- differences at the pins VB1, VB2 and VB3 and gen-

ation by a high signal at the DIFF input, providing erates an error signal if the absolut value exceeds

differential output signals for the three inputs E1, E3 0.75 V.

and E5. All inputs are compatible with CMOS and

TTL levels.

The open-drain output NER allows the device to be

wired-ORed to the relevant NER error outputs of

The push-pull output stages have a driver power other iC-DLs. Via input TNER the message outputs

of typically 200 mA from 24 V and are short-circuit- of other ICs can be extended to generate system er-

proof and current-limited, shutting down with exces- ror messages. NER switches to high impedance if

sive temperature. For bus applications the output supply voltage VCC ceases to be applied.

stages can be switched to high impedance using in-

put ENA.

The device is protected against ESD.

PACKAGES QFN28 5 x 5 mm² JEDEC MO-220-VHHD-1

PIN CONFIGURATION QFN28 5 x 5 mm²

PIN FUNCTIONS

No. Name Function

5 E4

6 E5

7 E6

Input Channel 4

Input Channel 5

Input Channel 6

28 27 26 25 24 23 22

8 VCC +5 V Supply

9 n.c.

10 TNER Error Input, low active

11 NER Error Output, active low

21

20

19

18

17

16

15

1

2

3

4

5

6

7

12 A6

Output Channel 6

DL

code...

...

13 GND4 Ground

14 VB3 +4.5 ... 40 V Power Supply

15 A5

Output Channel 5

16 GND3 Ground

17 A4

Output Channel 4

18 VB2 +4.5 ... 40 V Power Supply

19 A3

Output Channel 3

8

9

10 11 12 13 14

20 GND2 Ground

21 A2

Output Channel 2

22 VB1 +4.5 ... 40 V Power Supply

23 GND1 Ground

PIN FUNCTIONS

No. Name Function

24 A1

Output Channel 1

25 n.c.

1 E1

2 E2

3 E3

4 n.c.

Input Channel 1

Input Channel 2

Input Channel 3

26 ENA Enable Input, high active

27 n.c.

28 DIFF Differential Mode Input, high active

The pins VB1, VB2 and VB3 must be connected to the same driver supply voltage VB. The pins GND1, GND2,

GND3 and GND4 must be connected to GND. To improve heat dissipation, the thermal pad at the bottom of the

package should be joined to an extended copper area which must have GND potential.

iC-DL

3-CHANNEL DIFFERENTIAL LINE DRIVER

Rev B1, Page 3/9

ABSOLUTE MAXIMUM RATINGS

Beyond these values damage may occur; device operation is not guaranteed. Absolute Maximum Ratings are no Operating Conditions.

Integrated circuits with system interfaces, e.g. via cable accessible pins (I/O pins, line drivers) are per principle endangered by injected

interferences, which may compromise the function or durability. The robustness of the devices has to be veriﬁed by the user during system

development with regards to applying standards and ensured where necessary by additional protective circuitry. By the manufacturer

suggested protective circuitry is for information only and given without responsibility and has to be veriﬁed within the actual system with

respect to actual interferences.

Item Symbol

No.

Parameter

Conditions

Unit

Min.

Max.

7

G001 VCC

G002 VBx

G003 V()

Supply Voltage

0

V

Driver Supply Voltage VB1, VB2, VB3 pulse tested

40

Voltage at E1...6, A1...6, DIFF, ENA,

TNER, NXS, CXS1, CXS6

36

G004 I(Ax)

G005 I(Ex)

Driver Output Current (x=1...6)

-800

-4

800

4

mA

Input Current Driver E1...E6, Diff, ENA,

TNER, NXS

G006 V(NER)

G007 I(NER)

G008 V()

Voltage at NER

pulse tested

0

36

25

V

Current in NER

-4

mA

kV

°C

ESD Suceptibility at all pins

Operating Junction Temperature

Storage Temperature Range

HBM 100 pF discharged through 1.5 k Ω

2

G009 Tj

-40

140

150

G010 Ts

THERMAL DATA

Operating Conditions: VB = 4...32 V, VCC = 4...5.5 V

Item Symbol

No.

Parameter

Conditions

Unit

°C

Min. Typ. Max.

-25 125

T01 Ta

Operating Ambient Temperature Range

(extended range to -40°C on request)

T02 Rthja

Thermal Resistance Chip to Ambient surface mounted, thermal pad soldered to

40

K/W

approx. 2 cm² heat sink

All voltages are referenced to ground unless otherwise stated.

All currents into the device pins are positive; all currents out of the device pins are negative.

iC-DL

3-CHANNEL DIFFERENTIAL LINE DRIVER

Rev B1, Page 4/9

ELECTRICAL CHARACTERISTICS

Operating Conditions: VB1...3 = 4.5...32 V, VCC = 4...5.5 V, Tj = -40...140 °C, unless otherwise noted

input level lo = 0...0.45 V, hi = 2.4 V...VCC, timing diagram see ﬁg. 1

Item Symbol

No.

Parameter

Conditions

Unit

Min.

Typ.

Max.

General (x=1..6)

001 VBx

Supply Voltage Range (Driver)

Supply Current in VB1...3

4

32

1.5

3

V

002 I(VBx)

003 I(VBx)

004 I(VBx)

Ax = lo

Ax = hi

mA

Supply Current in VB1,

Outputs A1...2 Tri-State

ENA = lo,

V(A1...2) = -0.3...(VB + 0.3 V)

1.2

005 I(VBx)

Supply Current in VB2...3, Out- ENA = lo,

1

mA

puts A3...6 Tri-State

V(A3...6) = -0.3...(VB + 0.3 V)

006 IO(Ax)

007 VCC

Output Leakage Current

Supply Voltage Range (Logic)

Supply Current in VCC

ENA = lo, V(Ax) = 0 ... VB

-20

4

20

5.5

10

µA

V

008 I(VCC)

009 I(VCC)

010 Vc()lo

ENA = hi, Ax = lo

5

mA

V

ENA = hi, Ax = hi

1.5

5

Clamp Voltage low at pins

VB1...3, A1...6, E1...6, DIFF,

ENA TNER, NER, VCC

I() = -10 mA, all other pins open

-1.2

-0.4

011 Vc()hi

012 Vc()hi

Clamp Voltage high at Vcc

I() = 10 mA

5.6

40

7

V

Clamp Voltage high at pins

VB1...3, A1...6, E1...6, DIFF,

ENA TNER, NER

I() ≤ 2 mA, all other pins open

64

013 I(VBx)

Supply Current in VB1...3

ENA = hi, f(E1...6) = 1 MHz

3

10

mA

Driver Outputs A1...6, Low-Side-action (x = 1...6)

101 Vs(Ax)lo

102 Vs(Ax)lo

103 Isc(Ax)lo

104 Isc(Ax)lo

105 Rout(Ax)

Saturation Voltage low

Short circuit current low

Output resistance

I(Ax) = 10 mA, Ax = low

I(Ax) = 30 mA, Ax = low

V(Ax) = 1.5 V

0.2

0.4

90

V

40

60

mA

Ω

V(Ax) = VB, Ax = low

VB = 10...40 V, V(Ax) = 0.5 * VB

VB = 40 V, Cl(Ax) = 100 pF

I(Ax) = -100 mA

800

100

40

75

106 SR(Ax)lo Slew Rate low

200

-1.3

600

V/µs

V

107 Vc(Ax)lo

Free Wheel Clamp Voltage low

-0.5

Driver Outputs A1...6, High-Side-action (x = 1...6)

201 Vs(Ax)hi

Saturation Voltage high

Vs(Ax)hi = VB - V(Ax),

I(Ax) = -10 mA

0.2

0.4

-40

V

202 Vs(Ax)hi

Saturation Voltage high

Vs(Ax)hi = VB - V(Ax),

I(Ax) = -30 mA, Ax = hi

203 Isc(Ax)hi

204 Isc(Ax)hi

205 Rout(Ax)

Short circuit current high

Output resistance

V(Ax) = VB - 1.5 V, Ax = hi

V(Ax) = 0 V, Ax = hi

-90

-800

40

-60

mA

Ω

VB = 10...40 V, V(Ax) =0.5 * VB

VB= 40 V, Cl(Ax) = 100 pF

75

100

1.3

206 SR(Ax)hi Slew Rate high

200

0.5

400

V/µs

V

207 Vc(Ax)hi

Free Wheel Clamp Voltage high I(Ax) = 100 mA,

VB = VCC = GND

Inputs E1...6, DIFF, ENA, TNER

601 Vt()hi

602 Vt()lo

603 Vt()hys

604 Ipd()

605 Ipd()

Threshold Voltage high

2

V

Threshold Voltage low

Input Hysteresis

0.8

200

10

Vt()hys = Vt()hi - Vt()lo

V() = 0.8 V

400

800

80

mV

µA

Pull-Down-Current

V() ≤ 40 V

160

Supply Voltage Control VB

701 VBon

Threshold Value at VB1 for Un- |VB1 - VB2| & |VB2 - VB3| & |VB1 - VB3| <

3.95

V

dervoltage Detection on

0.75 V

(NER ⇒ low)

702 VBoff

Threshold Value at VB1 for Un- |VB1 - VB2| & |VB2 - VB3| & |VB1 - VB3| <

3

dervoltage Detection off

0.75 V

(NER ⇒ high)

iC-DL

3-CHANNEL DIFFERENTIAL LINE DRIVER

Rev B1, Page 5/9

ELECTRICAL CHARACTERISTICS

Operating Conditions: VB1...3 = 4.5...32 V, VCC = 4...5.5 V, Tj = -40...140 °C, unless otherwise noted

input level lo = 0...0.45 V, hi = 2.4 V...VCC, timing diagram see ﬁg. 1

Item Symbol

No.

Parameter

Conditions

Unit

Min.

Typ.

250

Max.

703 VBhys

Hysteresis

VBhys = VBon - VBoff

150

mV

V

Supply Voltage Difference Control VB1...3

801 ∆V(VBx) Threshold Condition for Supply

∆V(VBx) = MAX (|VB1 - VB2| ,

0.75

1.85

Voltage Difference between VB1, |VB2 - VB3| , |VB1 - VB3| )

VB2 and VB3

NER ⇒ low

Supply Voltage Control VCC

901 VCCon

902 VCCoff

903 VCChys

Threshold Value at VCC for Un- NER ⇒ low

3.95

V

dervoltage Detection on

Threshold Value at VCC for Un- NER ⇒ high

3

dervoltage Detection off

Hysteresis

VCChys = VCCon - VCCoff

250

600

mV

Temperatur Control

A01 Toff

A02 Ton

Thermal Shutdown Threshold

145

130

175

165

°C

Thermal Lock-on Threshold

Thermal Shotdown Hysteresis

A03 Thys

Error Output NER

B01 Vs()

Thys = Ton - Toff

12

Saturation Voltage low at NER

I(NER) = 5 mA, NER = lo

0.4

20

10

V

mA

µA

V

B02 Isc()

B03 IO()

Short Circuit Current low at NER V(NER) = 2...40 V, NER = lo

Leakage Current at NER V(NER) = 0 V...VB, NER = hi

-10

2.9

B04 VCC

Supply Voltage for NER function I(NER) = 5 mA, NER = lo,

Vs(NER) < 0.4 V

Time Delays

I01 tplh(E-A)

I02 tphl(E-A)

Propagation Delay Ex ⇒ Ax

DIFF = lo, Cl() = 100 pF, see Fig. 1

100

30

400

200

100

ns

DIFF = lo, Cl() = 100 pF, see Fig. 1

DIFF = hi, Cl() = 100 pF, see Fig. 1

I03 ∆tplh(Ax) Delay Skew

|A1 ⇒ A2|, |A3 ⇒ A4|, |A5 ⇒ A6|

I04 ∆tphl(Ax) Delay Skew

|A1 ⇒ A2|, |A3 ⇒ A4|, |A5 ⇒ A6|

I05 tplh(ENA) Propagation Delay ENA ⇒ Ax

I06 tplh(ENA) Propagation Delay ENA ⇒ Ax

I07 tphl(ENA) Propagation Delay ENA ⇒ Ax

I08 tphl(ENA) Propagation Delay ENA ⇒ Ax

DIFF = hi, Cl() = 100 pF, see Fig. 1

30

100

300

200

500

250

400

2

ns

µs

Ex = hi, DIFF = lo, Cl() = 100 pF,

Rl(Ax, GND) = 5 kΩ, see Fig. 1

130

100

200

250

100

130

0.5

Ex = lo, DIFF = lo, Cl() = 100 pF,

Rl(VB, Ax) = 100 kΩ, see Fig. 1

Ex = lo, DIFF = lo,

Rl(VB, Ax) = 5 kΩ, see Fig. 1

Ex = hi, DIFF = lo,

Rl(Ax, GND) = 5 kΩ, see Fig. 1

I09 tphl(DIFF) Propagation Delay

DIFF ⇒ A2, A4, A6

I10 tplh(DIFF) Propagation Delay

DIFF ⇒ A2, A4, A6

I11 tpll(TNER) Propagation Delay TNER ⇒ NER Rl(VB, NER) = 5 kΩ,

E1, E3, E5 = hi, Cl() = 100 pF, see Fig. 1

E1, E3, E5 = lo, Cl() = 100 pF, see Fig. 1

Cl() = 100 pF, see Fig. 1

V

Input/Output

2.4V

2.0V

0.8V

0.45V

t

1

0

Figure 1: Reference levels for delays

iC-DL

3-CHANNEL DIFFERENTIAL LINE DRIVER

Rev B1, Page 6/9

DESCRIPTION

Line drivers for control engineering couple TTL- or ever, further reﬂection of back travelling signals is pre-

CMOS-compatible digital signals with 24 V systems via vented by an integrated impedance network, as shown

cables. The maximum permissible signal frequency is in Figure 3.

dependent on the capacitive load of the outputs (ca-

ble length) or, more speciﬁcally, the power dissipation

in iC-DL resulting from this. To avoid possible short

circuiting the drivers are current-limited and shutdown

with excessive temperature.

When the output is open the maximum output voltage

corresponds to supply voltage VB (with the exception

of any saturation voltages). Figure 2 gives the typical

DC output characteristic of a driver as a function of the

load. The differential output resistance is typically 75 Ω

over a wide voltage range.

Figure 3: Reﬂections caused by a mismatched line

termination

During a pulse transmission the amplitude at the iC-

DL output initially only increases to half the value of

40

VE = hi

36

32

28

24

20

16

12

8

VB = 40 V

supply voltage VB as the internal driver resistance and

characteristic line impedance form a voltage divider. A

wave with this amplitude is coupled into the line and

experiences after a delay a total reﬂection at the high-

impedance end of the line. At this position, the re-

ﬂected wave superimposes with the transmitted wave

and generates a signal with the double wave amplitude

at the receiving device.

VB = 24 V

4

0

100

200

300

400

500

- I(A) [mA]

Figure 2: Load dependence of the output voltage

(High-side stage)

Figure 4: Pulse transmission and transit times

After a further delay, the reﬂected wave also increases

the driver output to the full voltage swing. iC-DL’s inte-

grated impedance adapter prevents any further reﬂec-

tion and the achieved voltage is maintained along and

at the termination of the line.

Each open-circuited input is set to low by an internal

pull-down current source; an additional connection to

GND increases the device’s immunity to interference.

The inputs are TTL- and CMOS-compatible. Due to

their high input voltage range, the inputs can also be

set to high-level by applying VCC or VB.

A mismatch between iC-DL and the transmission line

inﬂuences the level of the signal wave ﬁrst coupled

LINE EFFECTS

In PLC systems data transmission using 24 V sig- into the line, resulting in reﬂections at the beginning

nals usually occurs without a matched line termina- of the line. The output signal may then have a num-

tion. A mismatched line termination generates reﬂec- ber of graduations. Voltage peaks beyond VB or below

tions which travel back and forth if there is also no line GND are capped by integrated diodes. By this way,

adaptation on the driver side of the device. With rapid transmisssion lines with a characteristic impedance

pulse trains transmission is disrupted. In iC-DL, how- between 30 and 140 Ω permit proper operation.

iC-DL

3-CHANNEL DIFFERENTIAL LINE DRIVER

Rev B1, Page 7/9

PRINTED CIRCUIT BOARD LAYOUT

heat. The thermal pad is to be soldered to the board

The thermal pad at the bottom of the package im- and must be connected to GND.

proves thermal dissipation. The board layout has to

be designed so that an appropriate number of copper

vias below the thermal pad area form a good conduc- To smooth the local IC supply VCC and VBx, block-

tive path to the reverse of the board where a blank cop- ing capacitors must be connected directly to these pins

per surface of sufﬁcient size (approx. 2 cm²) carries off and to GND.

EVALUATION BOARD

iC-DL is in a QFN28 package and comes with a eval-

uation board for test purposes. Figures 5 and 6 show

both the wiring and the top of the evaluation board.

Figure 5: Circuit diagram of the evaluation board

iC-DL

3-CHANNEL DIFFERENTIAL LINE DRIVER

Rev B1, Page 8/9

Figure 6: Evaluation board (component side)

iC-Haus expressly reserves the right to change its products and/or speciﬁcations. An Infoletter gives details as to any amendments and additions made to the

relevant current speciﬁcations on our internet website www.ichaus.de/infoletter; this letter is generated automatically and shall be sent to registered users by

email.

Copying – even as an excerpt – is only permitted with iC-Haus approval in writing and precise reference to source.

iC-Haus does not warrant the accuracy, completeness or timeliness of the speciﬁcation on this site and does not assume liability for any errors or omissions

in the materials. The data speciﬁed is intended solely for the purpose of product description. No representations or warranties, either express or implied, of

merchantability, ﬁtness for a particular purpose or of any other nature are made hereunder with respect to information/speciﬁcation or the products to which

information refers and no guarantee with respect to compliance to the intended use is given. In particular, this also applies to the stated possible applications or

areas of applications of the product.

iC-Haus conveys no patent, copyright, mask work right or other trade mark right to this product. iC-Haus assumes no liability for any patent and/or other trade

mark rights of a third party resulting from processing or handling of the product and/or any other use of the product.

As a general rule our developments, IPs, principle circuitry and range of Integrated Circuits are suitable and speciﬁcally designed for appropriate use in technical

applications, such as in devices, systems and any kind of technical equipment, in so far as they do not infringe existing patent rights. In principle the range of

use is limitless in a technical sense and refers to the products listed in the inventory of goods compiled for the 2008 and following export trade statistics issued

annually by the Bureau of Statistics in Wiesbaden, for example, or to any product in the product catalogue published for the 2007 and following exhibitions in

Hanover (Hannover-Messe).

We understand suitable application of our published designs to be state-of-the-art technology which can no longer be classed as inventive under the stipulations

of patent law. Our explicit application notes are to be treated only as mere examples of the many possible and extremely advantageous uses our products can

be put to.

iC-DL

3-CHANNEL DIFFERENTIAL LINE DRIVER

Rev B1, Page 9/9

ORDERING INFORMATION

Type

Package

Order Designation

iC-DL QFN28

iC-DL

QFN28 5 x 5 mm²

iC-DL Evaluation Board

iC-DL EVAL DL2D

For technical support, information about prices and terms of delivery please contact:

iC-Haus GmbH

Tel.: +49 (61 35) 92 92-0

Am Kuemmerling 18

D-55294 Bodenheim

GERMANY

Fax: +49 (61 35) 92 92-192

Web: http://www.ichaus.com

E-Mail: sales@ichaus.com

Appointed local distributors: http://www.ichaus.com/sales_partners


型号：	IC-DL
厂家：	IC-HAUS GMBH
描述：	3-CHANNEL DIFFERENTIAL LINE DRIVER 3通道差分线路驱动器驱动器
文件：	总9页 (文件大小：300K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

IC-DL [ICHAUS]

相关型号：

IC-DLEVALDL2D

IC-DLQFN28

IC-DN

IC-DNSOT23-6L

IC-DP

IC-DPSOT23-6L

IC-DP_11

IC-DX

IC-DXC

IC-DXC_11

IC-DXDFN6

IC-DX_11