ltc6400cud-14-trpbf Linear Technology Corporation, ltc6400cud-14-trpbf Datasheet

ltc6400cud-14-trpbf

Manufacturer Part Number

ltc6400cud-14-trpbf

Description

2.4ghz Low Noise, Low Distortion Differential Adc Driver For 300mhz If

Manufacturer

Linear Technology Corporation

Datasheet

1.LTC6400CUD-14-TRPBF.pdf (16 pages)

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FEATURES

APPLICATIONS

TYPICAL APPLICATION

2.4GHz –3dB Bandwidth

Fixed Gain of 5V/V (14dB)

–97dBc IMD3 at 70MHz (Equivalent OIP3 = 52.4dBm)

–66dBc IMD3 at 300MHz (Equivalent OIP3 = 36.9dBm)

1.1nV/√Hz Internal Op Amp Noise

2.5nV/√Hz Total Input Noise

7.5dB Noise Figure

Differential Inputs and Outputs

200Ω Input Impedance

2.85V to 3.5V Supply Voltage

85mA Supply Current (255mW)

1V to 1.6V Output Common Mode Voltage,

Adjustable

DC- or AC-Coupled Operation

Max Differential Output Swing 4.8V

Small 16-Lead 3mm × 3mm × 0.75mm QFN Package

Differential ADC Driver

Differential Driver/Receiver

Single Ended to Differential Conversion

IF Sampling Receivers

SAW Filter Interfacing

0.1μF

68.5Ω

29Ω

1000pF

0.1μF

Single-Ended to Differential ADC Driver

3.3V

+IN

–IN

V –

LTC6400-14

OCM

+OUT

–OUT

1.25V

0.1μF

COILCRAFT

0603CS

100Ω

15Ω

P-P

24nH

33pF

10Ω

16-Bit ADC

130Msps

LTC2208

AIN

DESCRIPTION

The LTC

targeted at processing signals from DC to 300MHz. The

part has been speciﬁ cally designed to drive 12-, 14- and

16-bit ADCs with low noise and low distortion, but can also

be used as a general-purpose broadband gain block.

The LTC6400-14 is easy to use, with minimal support

circuitry required. The output common mode voltage is

set using an external pin, independent of the inputs, which

eliminates the need for transformers or AC-coupling ca-

pacitors in many applications. The gain is internally ﬁ xed

at 14dB (5V/V).

The LTC6400-14 saves space and power compared to

alternative solutions using IF gain blocks and transformers.

The LTC6400-14 is packaged in a compact 16-lead 3mm ×

3mm QFN package and operates over the – 40°C to 85°C

temperature range.

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

All other trademarks are the property of their respective owners.

–

Distortion Differential ADC

LTC2208

3.3V

64014 TA01a

2.4GHz Low Noise, Low

6400-14 is a high-speed differential ampliﬁ er

Driver for 300MHz IF

Equivalent Output IP3 vs

FREQUENCY (MHz)

100

Frequency

LTC6400-14

150

200

(NOTE 7)

250

640020 TA01b

300

640014fb

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