LTC2444/LTC2445/
LTC2448/LTC2449
28
2444589fc
For more information www.linear.com/LTC2444
package DescripTion
Please refer to http://www.linear.com/product/LTC2444#packaging for the most recent package drawings.
5.00 ±0.10
NOTE:
1. DRAWING CONFORMS TO JEDEC PACKAGE
OUTLINE M0-220 VARIATION WHKD
2. DRAWING NOT TO SCALE
3. ALL DIMENSIONS ARE IN MILLIMETERS
PIN 1
TOP MARK
(SEE NOTE 6)
37
1
2
38
BOTTOM VIEW—EXPOSED PAD
5.50 REF
5.15 ±0.10
7.00
±0.10
0.75 ±0.05
R = 0.125
TYP
R = 0.10
TYP
0.25 ±0.05
(UH) QFN REF C 1107
0.50 BSC
0.200 REF
0.00 – 0.05
RECOMMENDED SOLDER PAD LAYOUT
APPLY SOLDER MASK TO AREAS THAT ARE NOT SOLDERED
3.00 REF
3.15 ±0.10
0.40 ±0.10
0.70 ±0.05
0.50 BSC
5.5 REF
3.00 REF
3.15 ±0.05
4.10 ±0.05
5.50 ±0.05
5.15 ±0.05
6.10 ±0.05
7.50 ±0.05
0.25 ±0.05
PACKAGE
OUTLINE
4. DIMENSIONS OF EXPOSED PAD ON BOTTOM OF PACKAGE DO NOT INCLUDE
MOLD FLASH. MOLD FLASH, IF PRESENT, SHALL NOT EXCEED 0.20mm ON ANY SIDE
5. EXPOSED PAD SHALL BE SOLDER PLATED
6. SHADED AREA IS ONLY A REFERENCE FOR PIN 1 LOCATION
ON THE TOP AND BOTTOM OF PACKAGE
PIN 1 NOTCH
R = 0.30 TYP OR
0.35 × 45°
CHAMFER
UHF Package
38-Lead Plastic QFN (5mm × 7mm)
(Reference LTC DWG # 05-08-1701 Rev C)
LTC2444/LTC2445/
LTC2448/LTC2449
29
2444589fc
For more information www.linear.com/LTC2444
Information furnished by Linear Technology Corporation is believed to be accurate and reliable.
However, no responsibility is assumed for its use. Linear Technology Corporation makes no representa-
tion that the interconnection of its circuits as described herein will not infringe on existing patent rights.
revision hisTory
REV DATE DESCRIPTION PAGE NUMBER
C 01/17 Updated Max values for f
EOSC
Updated formula for t
CONV
Updated Note 13
Inserted Figure 4, Input Range
Revised Table 8, Performance vs Oversample Ratio
5
5
5
11
26
(Revision history begins at Rev C)
LTC2444/LTC2445/
LTC2448/LTC2449
30
2444589fc
For more information www.linear.com/LTC2444
LINEAR TECHNOLOGY CORPORATION 2004
LT 0117 REV C • PRINTED IN USA
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
(408) 432-1900
FAX: (408) 434-0507
www.linear.com/LTC2444
relaTeD parTs
Typical applicaTion
PART NUMBER DESCRIPTION COMMENTS
LT
®
1025 Micropower Thermocouple Cold Junction Compensator 80µA Supply Current, 0.5°C Initial Accuracy
LTC1043 Dual Precision Instrumentation Switched Capacitor Building
Block
Precise Charge, Balanced Switching, Low Power
LTC1050 Precision Chopper Stabilized Op Amp No External Components 5µV Offset, 1.6µV
P-P
Noise
LT1236A-5 Precision Bandgap Reference, 5V 0.05% Max, 5ppm/°C Drift
LT1461 Micropower Series Reference, 2.5V 0.04% Max, 3ppm/°C Max Drift
LTC1592 Ultraprecise 16-Bit SoftSpan™ DAC Six Programmable Output Ranges
LTC1655 16-Bit Rail-to-Rail Micropower DAC ±1LSB DNL, 600µA, Internal Reference, SO-8
LTC1799 Resistor Set SOT-23 Oscillator Single Resistor Frequency Set
LTC2053 Rail-to-Rail Instrumentation Amplifier 10µV Offset with 50nV/°C Drift, 2.5µV
P-P
Noise 0.01Hz to 10Hz
LTC2412 2-Channel, Differential Input, 24-Bit, No Latency ∆∑ ADC 0.16ppm Noise, 2ppm INL, 200µA
LTC2415 1-Channel, Differential Input, 24-Bit, No Latency ∆∑ ADC 0.23ppm Noise, 2ppm INL, 2X Speed Mode
LTC2414/LTC2418 4-/8-Channel, Differential Input, 24-Bit, No Latency ∆∑ ADC 0.2ppm Noise, 2ppm INL, 200µA
LTC2430/LTC2431 1-Channel, Differential Input, 20-Bit, No Latency ∆∑ ADC 0.56ppm Noise, 3ppm INL, 200µA
LTC2436-1 2-Channel, Differential Input, 16-Bit, No Latency ∆∑ ADC 800nV
RMS
Noise, 0.12LBS INL, 0.006LBS Offset, 200µA
LTC2440 1-Channel, Differential Input, High Speed/Low Noise, 24-Bit,
No Latency ∆∑ ADC
2µV
RMS
Noise at 880Hz, 200nV
RMS
Noise at 6.9Hz,
0.005% INL, Up to 3.5kHz Output Rate
+
+
5V
0V
1/2 LT1368
1/2 LT1368
1
2
3
4
5
6
7
8
HIGH
SPEED
∆∑ ADC
MUX
MUXOUTN
MUXOUTP
ADCINP
ADCINN
17
2444589 TA02
(EXTERNAL AMPLIFIERS)
LTC2449
CH0-CH15/
COM
SDI
SCK
SDO
CS
0.1µF
0.1µF
External Buffers Provide High Impedance Inputs and Amplifier Offsets are Cancelled

LTC2448IUHF#TRPBF

Mfr. #:
Manufacturer:
Analog Devices Inc.
Description:
Analog to Digital Converters - ADC 24-Bit 8-ch. Diff., High Speed Delta-Sigma ADC
Lifecycle:
New from this manufacturer.
Delivery:
DHL FedEx Ups TNT EMS
Payment:
T/T Paypal Visa MoneyGram Western Union