LTC2246H View Datasheet(PDF) - Linear Technology

Part Name

Description

Manufacturer

LTC2246H

14-Bit, 25Msps 125°C ADC In LQFP

Linear Technology 

LTC2246H

ANALOG INPUT The l denotes the specifications which apply over the full operating temperature range, otherwise

specifications are at TA = 25°C. (Note 4)

SYMBOL

VIN

VIN, CM

IIN

ISENSE

IMODE

tAP

tJITTER

CMRR

PARAMETER

Analog Input Range (AIN+ – AIN–)

CONDITIONS

2.8V < VDD < 3.5V (Note 7)

Analog Input Common Mode (AIN+ + AIN–)/2

Analog Input Leakage Current

SENSE Input Leakage

MODE Pin Leakage

Sample-and-Hold Acquisition Delay Time

Sample-and-Hold Acquisition Delay Time Jitter

Analog Input Common Mode Rejection Ratio

Differential Input (Note 7)

Single Ended Input (Note 7)

0V < AIN+, AIN– < VDD

0V < SENSE < 1V

MIN TYP MAX

l

±0.5V to

±1V

l

1

1.5

1.9

l 0.5

1.5

2

l –10

10

l –10

10

l –10

10

0

0.2

80

UNITS

V

V

V

μA

μA

μA

ns

psRMS

dB

DYNAMIC ACCURACY The l denotes the specifications which apply over the full operating temperature range,

otherwise specifications are at TA = 25°C. AIN = –1dBFS. (Note 4)

SYMBOL PARAMETER

CONDITIONS

MIN TYP MAX UNITS

SNR

Signal-to-Noise Ratio

5MHz Input

12.5MHz Input

70MHz Input

74.5

dB

l 72

74.2

dB

73.4

dB

SFDR

Spurious Free Dynamic Range

2nd or 3rd Harmonic

5MHz Input

12.5MHz Input

70MHz Input

90

dB

l 74

90

dB

85

dB

SFDR

Spurious Free Dynamic Range

4th Harmonic or Higher

5MHz Input

12.5MHz Input

70MHz Input

90

dB

l 78

90

dB

90

dB

S/(N+D) Signal-to-Noise Plus Distortion Ratio

5MHz Input

12.5MHz Input

70MHz Input

74.5

dB

l 71.5 74.2

dB

73.4

dB

IMD

Intermodulation Distortion

fIN1 = 4.3MHz, fIN2 = 4.6MHz

90

dB

INTERNAL REFERENCE CHARACTERISTICS TA = 25°C. (Note 4)

PARAMETER

VCM Output Voltage

VCM Output Tempco

VCM Line Regulation

VCM Output Regulation

CONDITIONS

IOUT = 0

2.8V < VDD < 3.5V

–1mA < IOUT < 1mA

MIN

1.475

TYP

1.500

±25

3

4

MAX

1.525

UNITS

V

ppm/°C

mV/V

Ω

DIGITAL INPUTS AND DIGITAL OUTPUTS The l denotes the specifications which apply over the full

operating temperature range, otherwise specifications are at TA = 25°C. (Note 4)

SYMBOL PARAMETER

LOGIC INPUTS (CLK, OE, SHDN)

CONDITIONS

MIN TYP MAX UNITS

VIH

High Level Input Voltage

VDD = 3V

l

2

V

VIL

Low Level Input Voltage

IIN

Input Current

CIN

Input Capacitance

VDD = 3V

VIN = 0V to VDD

(Note 7)

l

0.8

V

l –10

10

μA

3

pF

2246hfa

3

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