Euvis

Differential Linear Amplifier, LI370

Differential Linear Amplifier
LI370
PRODUCT DESCRIPTION
LI370 is a differential amplifier with 0.2% (-55dBc) THD at 1GHz and better than 0.5%(-46dBc) THD at up to 3GHz with 1.2Vp-p (0.6Vp-p single-ended) output. The amplifier
can be used as single-ended to differential, single-ended to single-ended, differential tosingle-ended, or differential to differential amplifier. Both the inputs and outputs arebiased at 0V for ideal interfacing with most devices. The small-signal 3dB bandwidth is4GHz while a ±0.2dB gain flatness is maintained from DC to 2GHz.

KEY FEATURES• 4 GHz small-signal bandwidth• ±0.2dB gain flatness DC to 2GHz
• 12dB differential, 6dB single-ended small signal gain
• 0.2% THD at 1GHz with 1.2Vp-p differential (0.6Vp-p S.E.) output• 0.5% THD at 3GHz with 1.2Vp-p differential (0.6Vp-p S.E.) output• AC or DC input coupling• AC or DC output coupling• Low group delay variation• Low jitter• Low 2nV/√Hz input referred noise• Dual +5V and –5V power supplies• 1.7W power consumption

BLOCK DIAGRAM

INP

OUTP

INN

OUTN

1
LI370_DS_A2 Specs subject to change without prior notice.

EuvisDifferential Linear Amplifier, LI370

ELECTRICAL SPECIFICATIONSParameter

Conditions/Note

Operating Temperature

Min

Typical-40

Max

Unit

85°C

Bandwidth-3dB

Gain Variation

DC to 1GHz

-0.1+0.1dB

DC to 2GHz

-0.2+0.2dB

DC to 3GHz

-0.4

+0.4

dB

Small Signal Gain

4GHz

Differential

12dB

Single-ended6dB

Total Harmonic Distortion Up to 3GHz, 1.2Vp-p differential(600mVp-p single-ended) output
Input Common-mode
Output Common-mode

0.5%0-0.20V+0.2

VDifferential

100ΩSingle-ended50Ω

Differential

100ΩSingle-ended50Ω

Input Return Loss

Up to 3GHz

15dB

Output Return Loss

Up to 3GHz

13dB

Input Referred Noise

Up to 4GHz

2nV/√Hz

20dB

Input Impedance
Output ImpedanceCommon Mode Rejection

2
LI370_DS_A2 Specs subject to change without prior notice.

EuvisDifferential Linear Amplifier, LI370

ELECTRICAL SPECIFICATIONS (CONTINUED)
Parameter

Conditions/NoteMinTypicalMax

Unit

Positive Supply Voltage

Vcc

4.75

55.25

VVcc Current

Icc

Negative Supply Voltage

VeeVee Current

Iee

POWER SUPPLY
150-5.25-5mA-4.75

V180mA

Power Dissipation

1.7W

Warm Up Time

10s

3LI370_DS_A2 Specs subject to change without prior notice.

EuvisDifferential Linear Amplifier, LI370

PERFORMANCE
Distortion vs Frequency
Input: Single-ended –6dBm to INP
Output: Single-ended from OUTP
100-10

Output Power (dBm/dBc)-20-30Fund-40

HD2-50

HD3-60

HD4-70

HD5-80

THD-90-100-110-120-13001234

Input Frequency (GHz)

Note: Spectrum analyzer noise floor is –120dBm.

Distortion vs Input Power
Input: Single-ended 1GHz to INP
Output: Single-ended from OUTP
100-10Output Power (dBm/dBc)-20-30Fund-40

HD2-50

HD3-60

HD4-70

HD5-80

THD-90-100-110-120-130-22-20-18-16-14-12-10-8-6-4

Input Power (dBm)

Note: Spectrum analyzer noise floor is –120dBm.

4LI370_DS_A2 Specs subject to change without prior notice.

EuvisDifferential Linear Amplifier, LI370

Small-Signal Frequency Response
Input: Single-ended to INP
Output: Single-ended from OUTP
20.0
15.0
10.0

Gain (dB)

5.0
0.0-5.0-10.0
-15.0
-20.0
0.E +00

1.E +09

2.E +09

3.E +09

4.E +09

5.E +09

6.E +09

F requency (H z)

Output Spectrum
Input: Single-ended -6dBm at 1GHz to INP
Output: Single-ended from OUTP
THD: -55dB (0.2%)
100-10Power (dBm)-20-30-40-50-60-70-80-90
0.0E+00

1.0E+09

2.0E+09

3.0E+09

4.0E+09

5.0E+096.0E+09

Frequency (Hz)

5LI370_DS_A2 Specs subject to change without prior notice.

EuvisDifferential Linear Amplifier, LI370

PACKAGE DIMENSIONS•••

Unit: mm
Package Format: 32-pin QFNPackage Size: 5 mm x 5 mm
Top View

32 31 30 29 28 27 26 25

01

2402

2303
04
05
06

EUVIS

22LI37020211907

1808

1709 10 11 12 13 14 15 16

5MetalLead

Pin 10.025

SeatingPlane
0.5
53.62

3.62

0.4

0.25

Bottom View

0.9

Side View

6LI370_DS_A2 Specs subject to change without prior notice.

EuvisDifferential Linear Amplifier, LI370

PIN DESCRIPTION
Pin No.

Name

Function

1234567891011121314151617181920212223242526272829303132

GND
GND
GND
VCC
VEE
GND
GND
GND
GND
NC
GND
OUTP
OUTN
GND
NC
GND
GND
GND
GND
VEE
VCC
GND
GND
GND
GND
NC
GND
INN
INP
GND
NC
GND

GroundGroundGroundPositive Power Supply
Negative Power Supply
GroundGroundGroundGroundNo Connect
GroundPositive Output
Negative Output
GroundNo Connect
GroundGroundGroundGroundNegative Power Supply
Positive Power Supply
GroundGroundGroundGroundNo Connect
GroundNegative Input
Positive Input
GroundNo Connect
Ground7
LI370_DS_A2 Specs subject to change without prior notice.

EuvisDifferential Linear Amplifier, LI370

ABSOLUTE MAXIMUM RATINGS
Vcc
Vee
Inputs (INP/N)
Outputs (OUTP/N)θJA
Maximum Junction Temperature
Operating Temperature Range
Storage Temperature Range

0V to 6V
-6V to 0V-1V to 1V-1V to 1V
TBD
150°C
0°C to +70°C-40°C to +125°C

LEAD TEMPERATURE RANGE (SOLDERING 60 SEC)

TBD

8LI370_DS_A2 Specs subject to change without prior notice.

EuvisDifferential Linear Amplifier, LI370

ORDERING INFORMATION
E-mail: sales@euvis.com
Tel: (805) 583-9888
Fax: (805) 583-9889

The information contained in this document is based on preliminary product test results.
Characteristic data and other specifications are subject to change without notice.
Customers are advised to confirm information in this advanced datasheet prior to using
this information or placing the order.
Euvis Inc. does not assume any liability arising from the application or use of any productor circuit described herein, neither does it convey any license under its patents or any
other rights.

9LI370_DS_A2 Specs subject to change without prior notice.