LT1819 datasheet(2/26 Pages) LINER

Part #	LT1819

Description	Dual, 16-Bit, 2Msps Differential Input ADC with Wide Input Common Mode Range

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Manufacturer	LINER [Linear Technology]

Direct Link	http://www.linear.com

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LTC2321-16

2

232116fc

For more information www.linear.com/2321-16

pin conFiguraTion

absoluTe MaxiMuM raTings

Supply Voltage (VDD)..................................................6V

Supply Voltage (OVDD)................................................3V

Supply Bypass Voltage (VBYP1, VBYP2) .......................3V

Analog Input Voltage

AIN+, AIN– (Note 3)................... –0.3V to (VDD + 0.3V)

REFOUT1,2 ............................. .–0.3V to (VDD + 0.3V)

CNV (Note 15).......................... –0.3V to (VDD + 0.3V)

Digital Input Voltage

(Note 3).......................... (GND – 0.3V) to (OVDD + 0.3V)

Digital Output Voltage

(Note 3).......................... (GND – 0.3V) to (OVDD + 0.3V)

Power Dissipation ...............................................200mW

Operating Temperature Range

LTC2321C ................................................ 0°C to 70°C

LTC2321I..............................................–40°C to 85°C

LTC2321H .......................................... –40°C to 125°C

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

(Notes 1, 2)

9 10

TOP VIEW

UFD PACKAGE

28-LEAD (4mm

× 5mm) PLASTIC QFN

29

GND

11 12 13

28 27 26 25 24

14

23

6

5

4

3

2

1

VDD

AIN2+

AIN2–

GND

AIN1–

AIN1+

VDD

SCK–

SCK+

SDO2–

SDO2+

CLKOUT–

CLKOUT+

SDO1–

SDO1+

7

17

18

19

20

21

22

16

8

15

TJMAX = 125°C, θJA = 43°C/W

EXPOSED PAD (PIN 29) IS GND, MUST BE SOLDERED TO PCB

orDer inForMaTion

LEAD FREE FINISH

TAPE AND REEL

PART MARKING*

PACKAGE DESCRIPTION

TEMPERATURE RANGE

LTC2321CUFD-16#PBF

LTC2321CUFD-16#TRPBF

23216

28-Lead (4mm × 5mm) Plastic QFN

0°C to 70°C

LTC2321IUFD-16#PBF

LTC2321IUFD-16#TRPBF

23216

28-Lead (4mm × 5mm) Plastic QFN

–40°C to 85°C

LTC2321HUFD-16#PBF

LTC2321HUFD-16#TRPBF

23216

28-Lead (4mm × 5mm) Plastic QFN

–40°C to 125°C

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

For more information on lead free part marking, go to: http://www.linear.com/leadfree/

For more information on tape and reel specifications, go to: http://www.linear.com/tapeandreel/. Some packages are available in 500 unit reels through

designated sales channels with #TRMPBF suffix.

elecTrical characTerisTics

SYMBOL

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

VIN+

Absolute Input Range (AIN1+, AIN2+)

(Note 5)

l

0

VDD

V

VIN–

Absolute Input Range (AIN1–, AIN2–)

(Note 5)

l

0

VDD

V

VIN+ – VIN– Input Differential Voltage Range

VIN = VIN+ – VIN–

l

–REFOUT1,2

REFOUT1,2

V

VCM

Common Mode Input Range

VIN = (VIN+ – VIN–)/2

l

0

VDD

V

IIN

Analog Input DC Leakage Current

l

–1

1

µA

CIN

Analog Input Capacitance

10

pF

CMRR

Input Common Mode Rejection Ratio

fIN = 500kHz

85

dB

IREFOUT

External Reference Current

REFINT = 0V, REFOUT = 4.096V

310

µA

The l denotes the specifications which apply over the full operating

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

http://www.linear.com/product/LTC2321-16#orderinfo

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