DC1591A

LTC6409

4

6409fa

elecTrical characTerisTics

SYMBOL PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

SR

Slew Rate

Differential Output, V

OUTDIFF

 = 4V

P-P

 

+OUT Rising (–OUT Falling) 

+OUT Falling (–OUT Rising)

3300 

1720 

1580

V/µs 

V/µs 

V/µs

GBW

Gain-Bandwidth Product

R

I

 = 25Ω, R

F

 = 10kΩ, f

TEST

 = 100MHz

 

l

9.5 

8

10

GHz 

GHz

f

–3dB

–3dB Frequency

R

I

 = R

F

 = 150Ω, R

LOAD

 = 400Ω, C

F

 = 1.3pF

2

GHz

f

0.1dB

Frequency for 0.1dB Flatness

R

I

 = R

F

 = 150Ω, R

LOAD

 = 400Ω , C

F

 = 1.3pF

600

MHz

FPBW

Full Power Bandwidth

V

OUTDIFF

 = 2V

P-P

550

MHz

HD2 

HD3

25MHz Distortion

Differential Input, V

OUTDIFF

 = 2V

P-P

,

  

R

I

 = R

F

 = 150Ω, R

LOAD

 = 400Ω

 

 

2nd Harmonic 

  3rd Harmonic

 

 

–104 

–106

 

 

dBc 

dBc

100MHz Distortion

Differential Input, V

OUTDIFF

 = 2V

P-P

,

  

R

I

 = R

F

 = 150Ω, R

LOAD

 = 400Ω

 

 

2nd Harmonic 

  3rd Harmonic

 

 

–93 

–88

 

 

dBc 

dBc

HD2 

HD3

25MHz Distortion

Single-Ended Input, V

OUTDIFF

 = 2V

P-P

,

  

R

I

 = R

F

 = 150Ω, R

LOAD

 = 400Ω

 

 

2nd Harmonic 

  3rd Harmonic

 

 

–101 

–103

 

 

dBc 

dBc

100MHz Distortion

Single-Ended Input, V

OUTDIFF

 = 2V

P-P

,

  

R

I

 = R

F

 = 150Ω, R

LOAD

 = 400Ω

 

 

2nd Harmonic 

  3rd Harmonic

 

 

–88 

–93

 

 

dBc 

dBc

IMD3

3rd Order IMD at 25MHz 

f1 = 24.9MHz, f2 = 25.1MHz

V

OUTDIFF

 = 2V

P-P

 Envelope, R

I

 = R

F

 = 150Ω,  

R

LOAD

 = 400Ω

–110

dBc

3rd Order IMD at 100MHz 

f1 = 99.9MHz, f2 = 100.1MHz

V

OUTDIFF

 = 2V

P-P

 Envelope, R

I

 = R

F

 = 150Ω,  

R

LOAD

 = 400Ω

–98

dBc

3rd Order IMD at 140MHz 

f1 = 139.9MHz, f2 = 140.1MHz

V

OUTDIFF

 = 2V

P-P

 Envelope, R

I

 = R

F

 = 150Ω,  

R

LOAD

 = 400Ω

–88

dBc

OIP3

Equivalent OIP3 at 25MHz (Note 12) 

Equivalent OIP3 at 100MHz (Note 12) 

Equivalent OIP3 at 140MHz (Note 12)

59 

53 

48

dBm 

dBm 

dBm

t

S

Settling Time

V

OUTDIFF

 = 2V

P-P

 Step, R

I

 = R

F

 = 150Ω,  

R

LOAD

 = 400Ω 

1% Settling

 

 

1.9

 

 

ns

 The 

l

 denotes the specifications which apply over the full operating 

temperature range, otherwise specifications are at T

A

 = 25°C. V

+

 = 5V, V

 = 0V, V

CM

 = V

OCM

 = V

ICM

 = 1.25V, V

SHDN

 = open. V

S

 is 

defined as (V

+

 – V

). V

OUTCM

 is defined as (V

+OUT

 + V

–OUT

)/2. V

ICM

 is defined as (V

+IN

 + V

–IN

)/2. V

OUTDIFF

 is defined as (V

+OUT

 – V

–OUT

).

Note 1: Stresses beyond those listed under Absolute Maximum Ratings 

may cause permanent damage to the device. Exposure to any Absolute 

Maximum Rating condition for extended periods may affect device 

reliability and lifetime.
Note 2: Input pins (+IN, –IN, V

OCM

, and SHDN) are protected by steering 

diodes to either supply. If the inputs should exceed either supply voltage, 

the input current should be limited to less than 10mA. In addition, the 

inputs +IN, –IN are protected by a pair of back-to-back diodes. If the 

differential input voltage exceeds 1.4V, the input current should be limited 

to less than 10mA.
Note 3: A heat sink may be required to keep the junction temperature 

below the absolute maximum rating when the output is shorted 

indefinitely.

Note 4: The LTC6409C/LTC6409I are guaranteed functional over the 

temperature range of –40°C to 85°C. The LTC6409H is guaranteed 

functional over the temperature range of –40°C to 125°C.
Note 5: The LTC6409C is guaranteed to meet specified performance from 

0°C to 70°C. The LTC6409C is designed, characterized and expected to 

meet specified performance from –40°C to 85°C, but is not tested or 

QA sampled at these temperatures. The LTC6409I is guaranteed to meet 

specified performance from –40°C to 85°C. The LTC6409H is guaranteed 

to meet specified performance from –40°C to 125°C.
Note 6: Input bias current is defined as the average of the input currents 

flowing into the inputs (–IN and +IN). Input offset current is defined as the 

difference between the input currents (I

OS

 = I

B

+

 – I

B

).

DC1591A Datasheet Related Products:
DC1591A Information:
Part No.
DC1591A
Description
DEMO BRD FOR LTC6409 ADC
File Size
449356 bytes
Page Size
612 x 792 pts (letter)
All Pages
24
Manufacturer
Linear Technology
Homepage
http://www.linear.com/
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