intersil EL1508 DATA SHEET

®

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EL1508

Data Sheet March 26, 2007

Differential DSL Line Driver

The EL1508 is designed for driving full rate ADSL signals in both CO and CPE applications at very low power dissipation. The high drive capability of 450mA makes this driver ideal for both CAP and DMT designs. It contains two wideband, high-voltage, current mode feedback amplifiers with a number of power dissipation reduction features.

These drivers achieve an MTPR distortion measurement of better than 70dB, while consuming typically 6mA of total supply current. This supply current can be set using a resistor on the I also be used to adjust supply current to one of four pre-set modes (full-I EL1508 operates on ±5V to ±12V supplies and retains its bandwidth and linearity over the complete supply range.

The device is supplied in a thermally-enhanced 20 Ld SOIC (0.300”), a thermally-enhanced 16 Ld SOIC (0.150”), and the small footprint (4x5mm) 24 Ld QFN packages. The EL1508 is specified for operation over the full -40°C to +85°C temperature range.

pin. Two other pins (C0 and C1) can

ADJ

, 2/3-IS, 1/3-IS, and full power-down). The

S

FN7014.5

Features

• 450mA output drive capability

•43.6V

nd/3rd

•2

differential output drive into 100Ω

P-P

harmonics of -85dBc/-75dBc

• MTPR of -70dB

• Operates down to 3mA per amplifier supply current

• Power control features

• Pin-compatible with EL1503

• Pb-free plus anneal available (RoHS compliant)

Applications

• ADSL line driver

• HDSL line driver

• Video distribution amplifier

• Video twisted-pair line driver

Pinouts

VIN-A

VOUTA

GND*

VIN+A

EL1508

[20 LD SOIC (0.300”)]

TOP VIEW

1

2

3

VS-

C1

C0

4

5

6

7

8

9

10

AB

POWER

CONTROL

LOGIC

EL1508

[16 LD SOIC (0.150”)]

TOP VIEW

VIN-B

20

VOUTB

19

VS+

18

-+ -+ GND*

17

GND*

16

GND*

15

GND*

14

VIN+B

13

IADJ

12

NC

11

*GND PINS ARE HEAT SPREADERS

1

VIN-A

VOUTA

2

VS-

3

GND*

4

GND*

5

VIN+A

6

C1

7

C0

8 9

POWER

CONTROL

LOGIC

VIN-B

16

VOUTB

15

NC

VS-

NC

GND

1

2

3

4

5

6

7

VS+

14

-+ -+ GND*

13

GND*

12

VIN+B

11

IADJ

10

NC

EL1508

(24 LD QFN)

TOP VIEW

VOUTA

VIN-A

24

23

THERMAL

PAD

8

9 C1

VIN+A

NC 22

10 C0

VIN-B 21

11

IADJ

VOUTB 20

19

18

17

16

15

14

13

12

VIN+B

NC

VS+

NC

GND

1

CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.

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| Intersil (and design) is a registered trademark of Intersil Americas Inc.

All other trademarks mentioned are the property of their respective owners.

EL1508

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Ordering Information

PART NUMBER PART MARKING TAPE & REEL PACKAGE PKG. DWG. #

EL1508CS EL1508CS - 16 Ld SOIC (0.150”) MDP0027 EL1508CS-T7 EL1508CS 7” 16 Ld SOIC (0.150”) MDP0027 EL1508CS-T13 EL1508CS 13” 16 Ld SOIC (0.150”) MDP0027 EL1508CSZ (See Note) EL1508CSZ - 16 Ld SOIC (0.150”) (Pb-Free) MDP0027 EL1508CSZ-T7 (See Note) EL1508CSZ 7” 16 Ld SOIC (0.150”) (Pb-Free) MDP0027 EL1508CSZ-T13 (See Note) EL1508CSZ 13” 16 Ld SOIC (0.150”) (Pb-Free) MDP0027 EL1508CM EL1508CM - 20 Ld SOIC (0.300”) MDP0027 EL1508CM-T13 EL1508CM 13” 20 Ld SOIC (0.300”) MDP0027 EL1508CMZ (See Note) EL1508CMZ - 20 Ld SOIC (0.300”) (Pb-Free) MDP0027 EL1508CMZ-T13 (See Note) EL1508CMZ 13” 20 Ld SOIC (0.300”) (Pb-Free) MDP0027 EL1508CL 1508CL - 24 Ld QFN MDP0046 EL1508CL-T7 1508CL 7” 24 Ld QFN MDP0046 EL1508CL-T13 1508CL 13” 24 Ld QFN MDP0046 EL1508CLZ (See Note) 1508CLZ - 24 Ld QFN (Pb-Free) MDP0046 EL1508CLZ-T7 (See Note) 1508CLZ 7” 24 Ld QFN (Pb-Free) MDP0046 EL1508CLZ-T13 (See Note) 1508CLZ 13” 24 Ld QFN (Pb-Free) MDP0046

NOTE: Intersil Pb-free plus anneal products employ special Pb-free material sets; molding compounds/die attach materials and 100% matte tin plate termination finish, which are RoHS compliant and compatible with both SnPb and Pb-free soldering operations. Intersil Pb-free products are MSL classified at Pb-free peak reflow temperatures that meet or exceed the Pb-free requirements of IPC/JEDEC J STD-020.

2

FN7014.5

March 26, 2007

EL1508

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Absolute Maximum Ratings (T

V

+ to VS- Supply Voltage. . . . . . . . . . . . . . . . . . . . . . .-0.3V to 28V

S

+ Voltage to Ground . . . . . . . . . . . . . . . . . . . . . . . . .-0.3V to 28V

V

S

V

- Voltage to Ground. . . . . . . . . . . . . . . . . . . . . . . . . . -28V to 0.3V

S

Driver V C

0

I

ADJ

CAUTION: Stresses above those listed in “Absolute Maximum Ratings” may cause permanent damage to the device. This is a stress only rating and operation of the device at these or any other conditions above those indicated in the operational sections of this specification is not implied .

IMPORT ANT NOTE: A ll p arameters having Min/Max specificati ons are gua ranteed. Typ values are for information purposes only. Unless otherwise note d, all test s are at the specified temperature and are pulsed tests, therefore: T

+ Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . VS- to VS+

IN

, C1 Voltage to GND . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to 6V

Voltage to GND . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to 4V

Electrical Specifications V

= 25°C)

A

= TC = T

J

= ±12V, RF = 2.2kΩ, RL= 65Ω, I

S

A

Current into any Input . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8mA

Output Current from Driver (Static) . . . . . . . . . . . . . . . . . . . . 100mA

Operating Temperature Range . . . . . . . . . . . . . . . . .-40°C to +85°C

Storage Temperature Range . . . . . . . . . . . . . . . . . .-60°C to +150°C

Operating Junction Temperature . . . . . . . . . . . . . . .-40°C to +150°C

Power Dissipation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . See Curves

= C0 = C1 = 0V, TA = 25°C. Amplifiers tested separately.

ADJL

PARAMETER DESCRIPTION CONDITIONS MIN TYP MAX UNIT

SUPPLY CHARACTERISTICS

+ (Full IS) Positive Supply Current per Amplifier All outputs at 0V, C0 = C1 = 0V 10 14.5 18 mA

I

S

- (Full IS) Negative Supply Current per Amplifier All outputs at 0V, C0 = C1 = 0V -9.5 -13.5 -17.5 mA

I

S

IS+ (2/3 IS) Positive Supply Current per Amplifier All outputs at 0V, C0 = 5V, C1 = 0V 7 10 12.5 mA

- (2/3 IS) Negative Supply Current per Amplifier All outputs at 0V, C0 = 5V, C1 = 0V -6 -9 -12 mA

I

S

+ (1/3 IS) Positive Supply Current per Amplifier All outputs at 0V, C0 = 0V, C1 = 5V 3.75 5.25 7 mA

I

S

- (1/3 IS) Negative Supply Current per Amplifier All outputs at 0V, C0 = 0V, C1 = 5V -2.75 -4.25 -6 mA

I

S

IS+ (6.8k) Positive Supply Current per Amplifier All outputs at 0V, C0 = C1 = 0V,

= 6.8k

R

ADJ

I

- (6.8k) Negative Supply Current per Amplifier All outputs at 0V, C0 = C1 = 0V,

S

+ (Power-down) Positive Supply Current per Amplifier All outputs at 0V, C0 = C1 = 5V 0.75 1.2 2 mA

I

S

- (Power-down) Negative Supply Current per Amplifier All outputs at 0V, C0 = C1 = 5V 0 -0.25 -2 mA

I

S

I

GND

GND Supply Current per Amplifier All outputs at 0V 1 mA

R

= 6.8k

ADJ

33.754.5mA

-3.75 -2.9 -2.25 mA

INPUT CHARACTERISTICS

V

OS

ΔV

OS

+ Non-Inverting Input Bias Current -15 15 µA

I

B

- Inverting Input Bias Current -50 50 µA

I

B

ΔIB-I R

OL

e

N

i

N

V

IH

V

IL

I

IH1

I

IH0

I

IL

Input Offset Voltage -10 1 10 mV VOS Mismatch -5 0 5 mV

- Mismatch -25 0 25 µA

B

Transimpedance 1.1 2.9 5 MΩ Input Noise Voltage 3.5 nV/√Hz

-Input Noise Current 13 pA/√Hz Input High Voltage C0 and C1 inputs 2.25 V Input Low Voltage C0 and C1 inputs 0.8 V Input High Current for C Input High Current for C

1 0

Input Low Current for C0 or C

1

C1 = 5V 126µA C0 = 5V 0.5 1 3 µA C0 = 0V, C1 = 0V -1 1 µA

3

FN7014.5

March 26, 2007

EL1508

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Electrical Specifications V

PARAMETER DESCRIPTION CONDITIONS MIN TYP MAX UNIT

OUTPUT CHARACTERISTICS

V

OUT

I

OL

I

OUT

DYNAMIC PERFORMANCE

BW -3 dB Bandwidth A HD2 2nd Harmonic Distortion f

HD3 3rd Harmonic Distortion f

MTPR Multi-Tone Power Ratio 26kHz to 1.1MHz, R

SR Slewrate V

Loaded Output Swing RL = 100Ω ±10.6 ±10.8 ±11.5 V

Linear Output Current AV = 5, RL = 10Ω, f = 100kHz,

Output Current V

= ±12V, RF = 2.2kΩ, RL= 65Ω, I

S

R

L

THD = -60dBc

OUT

V

= 1MHz, RL = 100Ω, V

C

fC = 1MHz, RL = 25Ω, V

= 1MHz, RL = 100Ω, V

C

= 1MHz, RL = 25Ω, V

f

C

P

LINE OUT

= C0 = C1 = 0V, TA = 25°C. Amplifiers tested separately. (Continued)

ADJL

= 25Ω ±9.8 ±10.2 ±10.6 V

450 mA

= 1V, RL = 1Ω 1A

= +5 80 MHz

= 2V

OUT

= 100Ω,

= 20.4dBM

from -8V to +8V measured at ±4V 450 600 800 V/µs

LINE

= 2V

P-P

-90 dBc

-80 dBc

-90 dBc

-75 dBc

-70 dBc

4

FN7014.5

March 26, 2007

Pin Descriptions

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EL1508

16 Ld SOIC

(0.150")

1 1 23 VIN-A Channel A Inverting Input

2 2 24 VOUTA Channel A Output (Reference Circuit 1) 3 3 3 VS- Negative Supply

4, 5 4, 5, 6, 7 7 GND Ground Connection

6 8 8 VIN+A Channel A Non-inverting Input

7 9 9 C1 Current Control Bit 1

20 Ld SOIC

(0.300") 24 Ld QFN PIN NAME FUNCTION CIRCUIT

CIRCUIT 1

VS+

VS-

CIRCUIT 2

VS+

8 10 10 C0 Current Control Bit 2 (Reference Circuit 3) 9 11 1, 2, 4, 5, 6, 14,

15, 16, 18, 19, 22

10 12 11 IADJ Supply Current Control Pin

11 13 12 VIN+B Channel B Non-inverting Input (Reference Circuit 2)

12, 13 14, 15, 16, 17 13 GND Ground Connection

14 18 17 VS+ Positive Supply 15 19 20 VOUTB Channel B Output (Reference Circuit 1) 16 20 21 VIN-B Channel B Inverting Input (Reference Circuit 1)

NC Not Connected

I

ADJ

6.7V

CIRCUIT 3

VS+

GND

CIRCUIT 4

5

FN7014.5

March 26, 2007

Typical Performance Curves

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EL1508

24

AV=10 V

=±12V

S

=100Ω

R

22

L

R

=0Ω

ADJ

20

18

GAIN (dB)

16

14

100K 1M 10M 100M

RF=2kΩ

RF=2.5kΩ

RF=3kΩ

FREQUENCY (Hz)

RF=1.5kΩ

FIGURE 1. DIFFERENTIAL FREQUENCY RESPONSE vs R

(1/3 POWER MODE)

24

AV=10

=±12V

V

S

R

=100Ω

22

L

=0Ω

R

ADJ

20

18

GAIN (dB)

16

RF=3kΩ

RF=2.5kΩ

RF=1.5kΩRF=2kΩ

18

AV=5 V

=±12V

S

=100Ω

R

16

L

14

12

GAIN (dB)

10

8

100K 1M 10M 100M

F

FIGURE 2. DIFFERENTIAL FREQUENCY RESPONSE

(1/3 POWER MODE)

18

AV=5 V

=±12V

S

=100Ω

R

16

L

14

RF=3.5kΩ

12

GAIN (dB)

10

RF=3kΩ

RF=4kΩ

RF=3.5kΩ

FREQUENCY (Hz)

RF=4kΩ

RF=3kΩ

RF=2kΩ

RF=2.5kΩ

RF=2kΩ

RF=2.5kΩ

14

100K 1M 10M 100M

FREQUENCY (Hz)

FIGURE 3. DIFFERENTIAL FREQUENCY RESPONSE vs R

(2/3 POWER MODE)

24

AV=10 V

=±12V

S

=100Ω

R

22

L

R

=0Ω

ADJ

20

18

GAIN (dB)

16

14

100K 1M 10M 100M

RF=1.5kΩ

RF=2kΩ

RF=2.5kΩ

RF=3kΩ

FREQUENCY (Hz)

FIGURE 5. DIFFERENTIAL FREQUENCY RESPONSE vs R

(FULL POWER MODE)

8

100K 1M 10M 100M

FREQUENCY (Hz)

F

FIGURE 4. DIFFERENTIAL FREQUENCY RESPONSE

(2/3 POWER MODE)

18

AV=5

=±12V

V

S

R

=100Ω

16

L

RF=4kΩ

14

12

GAIN (dB)

10

8

100K 1M 10M 100M

F

FIGURE 6. DIFFERENTIAL FREQUENCY RESPONSE

RF=3kΩ

RF=3.5kΩ

FREQUENCY (Hz)

RF=2kΩ

RF=2.5kΩ

(FULL POWER MODE)

6

FN7014.5

March 26, 2007