LTC2640CTS8-LZ8#PBF datasheet, PDF

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LTC2640CTS8-LZ8#PBF: DescriptionLTC2640 - Single 12-/10-/8-Bit SPI VOUT DACs with 10ppm/°C Reference; Package: SOT; Pins: 8; Temperature Range: 0°C to 70°C; CategoryAnalog mixed-signal IC converter; File Size336KB，24 Pages; ManufacturerLinear ( ADI ); Websitehttp://www.analog.com/cn/index.html; Environmental Compliance

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LTC2640CTS8-LZ8#PBF Overview

LTC2640 - Single 12-/10-/8-Bit SPI VOUT DACs with 10ppm/°C Reference; Package: SOT; Pins: 8; Temperature Range: 0°C to 70°C

LTC2640CTS8-LZ8#PBF Parametric

Parameter Name	Attribute value
Brand Name	Linear Technology
Is it Rohs certified?	conform to
Maker	Linear ( ADI )
Parts packaging code	SOT
package instruction	VSSOP, TSSOP8,.1
Contacts	8
Manufacturer packaging code	TS8
Reach Compliance Code	compliant
ECCN code	EAR99
Maximum analog output voltage	2.5 V
Minimum analog output voltage
Converter type	D/A CONVERTER
Enter bit code	BINARY
Input format	SERIAL
JESD-30 code	R-PDSO-G8
JESD-609 code	e3
length	2.9 mm
Maximum linear error (EL)	0.1953%
Humidity sensitivity level	1
Number of digits	8
Number of functions	1
Number of terminals	8
Maximum operating temperature	70 °C
Minimum operating temperature
Package body material	PLASTIC/EPOXY
encapsulated code	VSSOP
Encapsulate equivalent code	TSSOP8,.1
Package shape	RECTANGULAR
Package form	SMALL OUTLINE, VERY THIN PROFILE, SHRINK PITCH
Peak Reflow Temperature (Celsius)	260
power supply	3/5 V
Certification status	Not Qualified
Maximum seat height	1 mm
Nominal settling time (tstl)	3.2 µs
Maximum slew rate	0.26 mA
Nominal supply voltage	3 V
surface mount	YES
technology	CMOS
Temperature level	COMMERCIAL
Terminal surface	Matte Tin (Sn)
Terminal form	GULL WING
Terminal pitch	0.65 mm
Terminal location	DUAL
Maximum time at peak reflow temperature	30
width	1.625 mm

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FEATURES

LTC2640

Single 12-/10-/8-Bit SPI

OUT

DACs with

10ppm/°C Reference

DESCRIPTION

The LTC

2640 is a family of 12-, 10-, and 8-bit voltage-

output DACs with an integrated, high-accuracy, low-drift

reference in an 8-lead TSOT-23 package. It has a rail-to-rail

output buffer that is guaranteed monotonic.

The LTC2640-L has a full-scale output of 2.5V, and operates

from a single 2.7V to 5.5V supply. The LTC2640-H has a

full-scale output of 4.096V, and operates from a 4.5V to

5.5V supply. A 10ppm/°C reference output is available at

the REF pin.

Each DAC can also operate in External Reference mode,

in which a voltage supplied to the REF pin sets the full-

scale output.

The LTC2640 DACs use a SPI/MICROWIRE™ compatible

3-wire serial interface which operates at clock rates up

to 50MHz.

The LTC2640 incorporates a power-on reset circuit. Op-

tions are available for Reset to Zero-Scale or Reset to

Mid-Scale after power-up.

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

ThinSOT is a trademark of Linear Technology Corporation. All other trademarks are the property

of their respective owners. Protected by U.S. Patents including 5396245, 5859606, 6891433,

6937178 and 7414561.

Integrated Precision Reference

2.5V Full-Scale 10ppm/°C (LTC2640-L)

4.096V Full-Scale 10ppm/°C (LTC2640-H)

Maximum INL Error: 1LSB (LTC2640A-12)

Bidirectional Reference: Input or 10ppm/°C Output

Low Noise (0.7mVpp, 0.1Hz to 200kHz)

Guaranteed Monotonic Over Temperature

2.7V to 5.5V Supply Range (LTC2640-L)

Low Power Operation: 180μA at 3V

Power Down to 1.8μA Maximum (C and I Grades)

Asynchronous DAC Clear Pin (LTC2640-Z)

Power-On Reset to Zero or Mid-Scale options

Double-Buffered Data Latches

Guaranteed Operation from –40°C to 125°C (H-Grade)

8-Lead TSOT-23 (ThinSOT™) Package

APPLICATIONS

Mobile Communications

Process Control and Industrial Automation

Automatic Test Equipment

Portable Equipment

Automotive

Optical Networking

BLOCK DIAGRAM

(LTC2640-Z)

REF

INTERNAL

REFERENCE

Integral Nonlinearity (LTC2640A-LZ12)

1.0

= 3V

= 2.5V

SDI

SWITCH

0.5

INL (LSB)

OUT

–1.0

GND

2640 TA01

SCK

24-BIT

SHIFT

CONTROL

DECODE LOGIC

RESISTOR

DIVIDER

DACREF

CS/LD

INPUT

DAC

–0.5

1024

2048

CODE

3072

4095

2640 TA01b

CLR

2640fb

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