LTC1446CS8 Linear Technology, LTC1446CS8 Datasheet

IC D/A CONV 12BIT R-R DUAL 8SOIC

LTC1446CS8

Manufacturer Part Number
LTC1446CS8
Description
IC D/A CONV 12BIT R-R DUAL 8SOIC
Manufacturer
Linear Technology
Datasheet

Specifications of LTC1446CS8

Settling Time
14µs
Number Of Bits
12
Data Interface
Serial
Number Of Converters
2
Voltage Supply Source
Single Supply
Power Dissipation (max)
5mW
Operating Temperature
0°C ~ 70°C
Mounting Type
Surface Mount
Package / Case
8-SOIC (3.9mm Width)
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
LTC1446CS8
Manufacturer:
LINEAR/凌特
Quantity:
20 000
Part Number:
LTC1446CS8#PBF
Manufacturer:
LT凌特厂
Quantity:
20 000
FEATURES
TYPICAL
APPLICATIO S
Dual DACs with 12-Bit Resolution
SO-8 Package
Rail-to-Rail Output Amplifiers
Internal Reference
Maximum DNL Error: 0.5LSB
3V Operation (LTC1446L): I
5V Operation (LTC1446): I
Settling Time: 14 s to 0.5LSB
Power-On Reset Clears DACs to 0V
3-Wire Cascadable Serial Interface with 500kHz
Update Rate
Schmitt Trigger On Input Allows Direct
Optocoupler Interface
Low Cost
Digital Calibration
Industrial Process Control
Automatic Test Equipment
Cellular Telephones
P
2
1
3
4
D
CLK
CS/LD
D
IN
OUT
Functional Block Diagram: Dual 12-Bit Rail-to-Rail DAC
POWER-ON
APPLICATION
LATCH
24-BIT
RESET
SHIFT
REG
AND
DAC
7
U
V
CC
LTC1446: 5V
LTC1446L: 3V TO 5V
12-BIT
12-BIT
DAC B
DAC A
CC
CC
= 1000 A Typ
GND
U
= 650 A Typ
6
+
+
1446/1446L TA01
V
V
OUT B
OUT A
DESCRIPTIO
The LTC
converters (DACs) available in an SO-8 package. They are
complete with a rail-to-rail voltage output amplifier, an
internal reference and an easy-to-use 3-wire cascadable
serial interface.
The LTC1446 has an internal reference and a full-scale
output of 4.095V. It operates from a single 4.5V to 5.5V
supply.
The LTC1446L has an internal reference and a full-scale
output of 2.5V. It operates from a single 2.7V to 5.5V
supply.
The low power supply current makes the LTC1446 family
ideal for battery-powered applications. These DACs are
available in space saving 8-pin SO and PDIP packages and
require no external components for operation.
, LTC and LT are registered trademarks of Linear Technology Corporation.
8
5
RAIL-TO-RAIL
VOLTAGE
OUTPUT
Micropower DACs in SO-8
®
1446/LTC1446L are dual 12-bit digital-to-analog
Dual 12-Bit Rail-to-Rail
U
–0.5
–0.1
–0.2
–0.3
–0.4
0.1
Differential Nonlinearity vs Input Code
0.5
0.4
0.3
0.2
0
LTC1446/LTC1446L
0
512
1024
1536
CODE
2048 2560
3072 3584 4095
1446/46L G13
1

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LTC1446CS8 Summary of contents

Page 1

... The low power supply current makes the LTC1446 family ideal for battery-powered applications. These DACs are available in space saving 8-pin SO and PDIP packages and require no external components for operation. , LTC and LT are registered trademarks of Linear Technology Corporation OUT B 8 – ...

Page 2

... LTC1446 LTC1446 LTC1446L LTC1446L For Specified Performance 4.5V V 5.5V (Note 5) CC For Specified Performance 2.7V V 5.5V (Note 5) CC ................................. –0. ORDER PART NUMBER TOP VIEW LTC1446CS8 8 V OUT B LTC1446IS8 LTC1446LCS8 GND 6 LTC1446LIS8 5 V OUT A S8 PART MARKING S8 PACKAGE 1446 1446L = 150 C/W ...

Page 3

ELECTRICAL CHARACTERISTICS The denotes the specifications which apply over the full operating temperature range. V (LTC1446L), V and V unloaded, T OUT A OUT B SYMBOL PARAMETER Op Amp DC Performance Short-Circuit Current Low Short-Circuit Current High Output Impedance to ...

Page 4

LTC1446/LTC1446L W U TYPICAL PERFORMANCE CHARACTERISTICS LTC1446 Differential Nonlinearity (DNL) 0.5 0.4 0.3 0.2 0.1 0 –0.1 –0.2 –0.3 –0.4 –0.5 0 512 1024 1536 2048 2560 3072 3584 4095 CODE 1446/46L G01 LTC1446L Integral Nonlinearity ...

Page 5

W U TYPICAL PERFORMANCE CHARACTERISTICS LTC1446L Supply Current vs Logic Input Voltage 1.2 1.1 1.0 0.9 0.8 0.7 0.6 0.5 0.5 1.0 1.5 2.0 2.5 LOGIC INPUT VOLTAGE (V) 1446/46L G10 PIN FUNCTIONS CLK: The Serial Interface ...

Page 6

LTC1446/LTC1446L W BLOCK DIAGRAM CLK 1 24-BIT SHIFT REGISTER CS/ OUT POWER-ON RESET DIAGRA CLK t 9 B0-B B11 PREVIOUS WORD MSB CS/LD B11-A D OUT ...

Page 7

U U DEFI ITIO S Resolution (n) Resolution is defined as the number of digital input bits defines the number of DAC output states (2 divide the full-scale range. The resolution does not imply linearity. Full-Scale Voltage (V ...

Page 8

LTC1446/LTC1446L U OPERATIO Serial Interface The data on the D input is loaded into the shift register IN on the rising edge of the clock. Data is loaded as one 24- bit word where the first 12 bits are for ...

Page 9

U TYPICAL APPLICATIONS This circuit shows how to use an LTC1446 and an ® LT 1077 to make a wide bipolar output swing 12-bit DAC with an offset that can be digitally programmed. V which can be set by loading ...

Page 10

LTC1446/LTC1446L U TYPICAL APPLICATIONS This circuit shows how to use one LTC1446 to make an autoranging ADC. The microprocessor sets the reference span and the Common pin for the analog input by loading the appropriate digital code into the LTC1446. ...

Page 11

... FLASH SHALL NOT EXCEED 0.010" (0.254mm) PER SIDE 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 represen- tation that the interconnection of its circuits as described herein will not infringe on existing patent rights. ...

Page 12

... OUT DAC with Rail-to-Rail Buffer OUT DAC in SO-8 Package OUT = 4.5V to 5.5V 4.095V CC OUT = 2.7V to 5.5V 2.5V CC OUT DAC in SO-8 Package OUT = 4.5V to 5.5V 4.095V CC OUT = 2.7V to 5.5V 2.5V CC OUT 1446lfa LT/LCG 0700 2K REV A • PRINTED IN USA LINEAR TECHNOLOGY CORPORATION 1996 ...

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