Linear Technology LT6552IS8, LT6552IDD, LT6552CS8, LT6552CDD Datasheet

LT6552

Final Electrical Specifications

3.3V Single Supply

Video Difference Amplifier

FEATURES

■

Differential or Single-Ended Gain Block

■

Wide Supply Range 3V to 12.6V

■

Output Swings Rail-to-Rail

■

Input Common Mode Range Includes Ground

■

600V/µs Slew Rate

■

–3dB Bandwidth = 75MHz, AV = ±2

■

CMRR at 10MHz: >60dB

■

Output Swings Rail-to-Rail

■

Specified on 3.3V, 5V and ±5V Supplies

■

High Output Drive: ±70mA

■

Power Shutdown to 300µA

■

Operating Temperature Range: –40°C to 85°C

■

Tiny 3mm x 3mm x 1mm DFN Package

U

APPLICATIO S

■

Differential to Single-Ended Conversion

■

Video Line Driver

■

Automotive Displays

■

RGB Amplifiers

■

Coaxial Cable Drivers

■

Low Voltage High Speed Signal Processing

U

July 2003

DESCRIPTIO

The LT®6552 is a video difference amplifier optimized for
low voltage single supply operation. This versatile ampli­fier features uncommitted high input impedance (+) and
(–) inputs and can be used in differential or single-ended
configurations. A second set of inputs gives gain adjust­ment and DC control to the differential amplifier.

On a single 3.3V supply, the input voltage range extends
from ground to 1.3V and the output can swing to within
400mV of the supply voltage while driving a 150Ω load.
The LT6552 features 75MHz – 3dB bandwidth, 600V/µs
slew rate, and ±70mA output current making it ideal for
driving cables directly. The LT6552 maintains its perfor­mance for supplies from 3V to 12.6V and is fully specified
at 3.3V, 5V and ±5V supplies. The shutdown feature
reduces power dissipation to less than 1mW and allows
multiple amplifiers to drive the same cable.

The LT6552 is available in the 8-pin SO package as well as
a tiny, dual fine pitch leadless package (DFN). The device
is specified over the commercial and industrial tempera­ture range.

, LTC and LT are registered trademarks of Linear Technology Corporation.

TYPICAL APPLICATIO

Cable Sense Amplifier for Loop Through
Connections with DC Adjust

V

IN

3

500Ω

2
1

8

R

G

CABLE

V

= 0.25V

DC

U

Input Referred CMRR vs Frequency

100

VS = 5V, 0V

90

5V

7

+
–

LT6552

REF
FB

4

R

500Ω

C

8pF

Information furnished by Linear Technology Corporation is believed to be accurate and reliable.
However, no responsibility is assumed for its use. Linear Technology Corporation makes no represen­tation that the interconnection of its circuits as described herein will not infringe on existing patent rights.

75Ω

6

F

F

V

75Ω

6552 TA01a

OUT

80

70

60

50

40

30

20

COMMON MODE REJECTION RATIO (dB)

10

100k

VCM = 0V

1 10 100

FREQUENCY (MHz)

6552 TA01b

6552i

1

LT6552

WW

W

ABSOLUTE AXI U RATI GS

U

(Note 1)

Supply Voltage (V+ to V–) .................................... 12.6V

Input Current (Note 2) ........................................ ±10mA

Input Voltage Range .................................................±V

Differential Input Voltage

+Input (Pin 3) to –Input (Pin 2)................................±V

Output Short-Circuit Duration (Note 3)............ Indefinite

UUW

PACKAGE/ORDER I FOR ATIO

TOP VIEW

FB

1REF

–IN

2

+IN

3

–

V

4

8-LEAD (3mm × 3mm) PLASTIC DFN

T

DD PACKAGE

= 125°C, θJA = 160°C/W (NOTE 3)

JMAX

UNDERSIDE METAL INTERNALLY

CONNECTED TO V

(PCB CONNECTION OPTIONAL)

8

+

V

7

OUT

6

SHDN

5

–

ORDER PART

NUMBER

LT6552CDD
LT6552IDD

DD PART MARKING*

ADR

Operating Temperature Range (Note 4) ...–40°C to 85°C

Specified Temperature Range (Note 5)....–40°C to 85°C

Maximum Junction Temperature .......................... 150°C

S

(DD Package) ................................................... 125°C

Storage Temperature Range ..................–65°C to 150°C

S

(DD Package) ....................................–65°C to 125°C

Lead Temperature (Soldering, 10 sec).................. 300°C

ORDER PART

TOP VIEW

REF

1

–IN

2

+IN

3

–

V

4

S8 PACKAGE

8-LEAD PLASTIC SO

T

= 150°C, θJA = 100°C/W

JMAX

FB

8

+

V

7

OUT

6

SHDN

5

NUMBER

LT6552CS8
LT6552IS8

S8 PART MARKING

6552
6552I

*The temperature grade is identified by a label on the shipping container. Consult LTC Marketing for parts specified with wider operating temperature ranges.

3.3V ELECTRICAL CHARACTERISTICS

The ● denotes the specifications which apply over the full

operating temperature range, otherwise specifications are at TA = 25°C. VS = 3.3V, 0V. Figure 1 shows the DC test circuit,
V

= VCM = 1V, V

REF

SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS

V

OS

∆VOS/∆T Input VOS Drift ● 40 µV/°C
I

B

I

OS

= 0V, V

DIFF

Input Offset Voltage Both Inputs (Note 7) 5 20 mV

Input Bias Current Any Input ● 25 50 µA
Input Offset Current Either Input Pair ● 15 µA

= V+, unless otherwise noted. RL = RF + RG = 1k. (Note 6)

SHDN

● 25 mV

2

6552i

LT6552

3.3V ELECTRICAL CHARACTERISTICS

The ● denotes the specifications which apply over the full

operating temperature range, otherwise specifications are at TA = 25°C. VS = 3.3V, 0V. Figure 1 shows the DC test circuit,
V

= VCM = 1V, V

REF

SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS

e

n

i

n

R

IN

CMRR Common Mode Rejection Ratio VCM = 0V to 1.3V ● 58 75 dB

PSRR Power Supply Rejection VS = 3V to 12V ● 48 54 dB

G

E

V

OH

V

OL

SR Slew Rate V

FPBW Full-Power Bandwidth (Note 9) VO = 2V
BW Small-Signal –3dB Bandwidth AV = 2, RL = 150Ω 65 MHz
tr, t

f

t

S

I

SC

I

S

V

L

V

H

t

ON

t

OFF

DIFF

= 0V, V

= V+, unless otherwise noted. RL = RF + RG = 1k. (Note 6)

SHDN

Input Noise Voltage Density f = 10kHz 55 nV/√Hz
Input Noise Current Density f = 10kHz 0.7 pA/√Hz
Input Resistance Common Mode, VCM = 0V to 1.3V 300 kΩ

Input Range ● 0 1.3 V

Minimum Supply (Note 8) ● 3V
Gain Error VO = 0.5V to 2V, RL = 1k ● 13 %

= 150Ω ● 13 %

R

L

Swing High (V

Swing Low (V

= 0.4V), V

DIFF

= 1k ● 3.1 3.2 V

R

L

R

= 150Ω ● 2.5 2.9 V

L

= 75Ω 2 2.5 V

R

L

= –0.1V), V

DIFF

= 1k ● 850 mV

R

L

= 5mA ● 65 120 mV

I

SINK

I

= 10mA ● 40 200 mV

SINK

= 0.5V to 2.5V Measure from 1V to 2V, 350 V/µs

OUT

= 150Ω, AV = 2

R

L

P-P

(Pin 1) = 0V, AV = 10

REF

(Pin 1) = 0V, AV = 10

REF

55 MHz

Rise Time, Fall Time (Note 10) AV =50, VO = 0.5V to 2.5V, 125 175 ns

20% to 80%, R

Settling Time to 3% AV = 2, ∆V
Settling Time to 1% R

= 150Ω 30 ns

L

= 150Ω

L

= 2V 20 ns

OUT

Differential Gain AV = 2, RL = 150Ω, Black Level = 0.6V 0.4 %
Differential Phase AV = 2, RL = 150Ω, Black Level = 0.6V 0.15 Deg
Short-Circuit Current V

OUT

= 0V, V

= 1V 35 50 mA

DIFF

● 25 mA

Supply Current 12 13.5 mA

● 15 mA

Supply Current Shutdown V

= 0.5V ● 300 750 µA

SHDN

Shutdown Pin Input Low Voltage ● 0.5 V
Shutdown Pin Input High Voltage ● 3V
Shutdown Pin Current V

Turn On-Time V
Turn Off-Time V

= 0.5V ● 40 150 µA

SHDN

V

= 3V ● 310 µA

SHDN

from 0.5V to 3V 250 ns

SHDN

from 3V to 0.5V 450 ns

SHDN

6552i

3