LTC2632ACTS8-HZ12#TRMPBF Linear Technology, LTC2632ACTS8-HZ12#TRMPBF Datasheet

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LTC2632ACTS8-HZ12#TRMPBF

Manufacturer Part Number
LTC2632ACTS8-HZ12#TRMPBF
Description
MS-DAC/Industrial, 12-Bit SPI Dual DAC ( 1LSB Max INL, 4.096V Ref, Reset To Zer
Manufacturer
Linear Technology
Datasheet

Specifications of LTC2632ACTS8-HZ12#TRMPBF

Input Channel Type
Serial
Data Interface
3-Wire, Serial
Supply Voltage Range - Analog
4.5V To 5.5V
Supply Current
500µA
Digital Ic Case Style
TSOT-23
No. Of Pins
8
Rohs Compliant
Yes
Resolution (bits)
12bit

Available stocks

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Quantity
Price
Company:
Part Number:
LTC2632ACTS8-HZ12#TRMPBFLTC2632ACTS8-HZ12
Manufacturer:
LT
Quantity:
10 000
Company:
Part Number:
LTC2632ACTS8-HZ12#TRMPBFLTC2632ACTS8-HZ12#PBF
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Company:
Part Number:
LTC2632ACTS8-HZ12#TRMPBFLTC2632ACTS8-HZ12#TRPBF
Manufacturer:
LT
Quantity:
1 994
FEATURES
n
n
n
n
n
n
n
n
n
n
APPLICATIONS
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BLOCK DIAGRAM
Integrated Precision Reference
2.5V Full-Scale 10ppm/°C (LTC2632-L)
4.096V Full-Scale 10ppm/°C (LTC2632-H)
Maximum INL Error: ±1LSB (LTC2632A-12)
Low Noise: 0.75mV
Guaranteed Monotonic –40°C to 125°C Automotive
Temperature Range
Selectable Internal or External Reference
2.7V to 5.5V Supply Range (LTC2632-L)
Low Power Operation 0.4mA at 3V
Power-On-Reset to Zero-Scale/Mid-Scale
Double-Buffered Data Latches
8-Lead ThinSOT™ Package
Mobile Communications
Process Control and Industrial Automation
Automatic Test Equipment
Portable Equipment
Automotive
GND
V
V
CS/LD
SCK
CC
OUTA
DAC A
P-P
CONTROL
LOGIC
0.1Hz to 200kHz
32-BIT SHIFT REGISTER
REFERENCE
INTERNAL
DECODE
SWITCH
DAC B
DESCRIPTION
The LTC
output DACs with an integrated, high-accuracy, low-drift
reference in an 8-lead TSOT-23 package. It has rail-to-rail
output buffers and is guaranteed monotonic.
The LTC2632-L has a full-scale output of 2.5V, and operates
from a single 2.7V to 5.5V supply. The LTC2632-H has a
full-scale output of 4.096V, and operates from a 4.5V to
5.5V supply. Each DAC can also operate with an external
reference, which sets the full-scale output to the external
reference voltage.
These DACs communicate via a simple SPI/MICROWIRE
compatible 3-wire serial interface which operates at clock
rates up to 50MHz. The LTC2632 incorporates a power-on
reset circuit. Options are available for reset to zero-scale
or reset to mid-scale in internal reference mode, or reset
to mid-scale in external reference mode after power-up.
L, LT, LTC, LTM, Linear Technology and the Linear logo 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, and 6937178.
POWER-ON
V
REF
RESET
V
OUTB
REF
SDI
®
2632 BD
2632 is a family of dual 12-, 10-, and 8-bit voltage-
10ppm/°C Reference
Dual 12-/10-/8-Bit SPI
–1
–2
Integral Nonlinearity (LTC2632A-LZ12)
2
1
0
V
0
V
INTERNAL REF .
CC
OUT
= 3V
1024
DACs with
CODE
2048
LTC2632
3072
2632 TA01
4095
2632fa
1

Related parts for LTC2632ACTS8-HZ12#TRMPBF

LTC2632ACTS8-HZ12#TRMPBF Summary of contents

Page 1

... L, LT, LTC, LTM, Linear Technology and the Linear logo 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, and 6937178 ...

Page 2

LTC2632 ABSOLUTE MAXIMUM RATINGS (Notes 1, 2) Supply Voltage (V ) ................................... –0. SCK, SDI ...................................................... –0. CS/LD (Note 11) ...............–0.3V to Min ( ...................–0.3V to Min (V OUTA OUTB REF ..................................–0.3V ...

Page 3

PRODUCT SELECTION GUIDE V FS PART NUMBER PART MARKING* LTC2632A-LI12 LTFSJ 2.5V • (4095/4096) LTC2632A-LX12 LTFSH 2.5V • (4095/4096) LTC2632A-LZ12 LTFSG 2.5V • (4095/4096) LTC2632A-HI12 LTFSM 4.096V • (4095/4096) LTC2632A-HZ12 LTFSK 4.096V • (4095/4096) LTC2632-LI12 LTFSJ 2.5V • (4095/4096) LTC2632-LI10 ...

Page 4

LTC2632 ELECTRICAL CHARACTERISTICS temperature range, otherwise specifications are at T LTC2632-LI12/-LI10/-LI8/-LX12/-LX10/-LX8/-LZ12/-LZ10/-LZ8, LTC2632A-LI12/-LX12/-LZ12 (V SYMBOL PARAMETER CONDITIONS DC Performance Resolution Monotonicity V = 3V, Internal Ref. CC (Note 4) DNL Differential V = 3V, Internal Ref. CC Nonlinearity (Note 4) INL ...

Page 5

ELECTRICAL CHARACTERISTICS temperature range, otherwise specifications are at T LTC2632-LI12/-LI10/-LI8/-LX12/-LX10/-LX8/-LZ12/-LZ10/-LZ8, LTC2632A-LI12/-LX12/-LZ12 (V SYMBOL PARAMETER Reference Input Input Voltage Range Resistance Capacitance I Reference Current, Power-Down Mode REF Reference Output Output Voltage Reference Temperature Coefficient Output Impedance Capacitive Load Driving Short-Circuit ...

Page 6

LTC2632 TIMING CHARACTERISTICS range, otherwise specifications are at T LTC2632-LI12/-LI10/-LI8/-LX12/-LX10/-LX8/-LZ12/-LZ10/-LZ8, LTC2632A-LI12/-LX12/-LZ12 (V SYMBOL PARAMETER t SDI Valid to SCK Setup 1 t SDI Valid to SCK Hold 2 t SCK High Time 3 t SCK Low Time 4 t CS/LD ...

Page 7

ELECTRICAL CHARACTERISTICS temperature range, otherwise specifications are at T LTC2632-HI12/-HI10/-HI8/-HZ12/-HZ10/-HZ8, LTC2632A-HI12/-HZ12 (V SYMBOL PARAMETER CONDITIONS DC Performance Resolution Monotonicity V = 5V, Internal Ref. (Note 4) CC DNL Differential V = 5V, Internal Ref. (Note 4) CC Nonlinearity INL Integral ...

Page 8

LTC2632 ELECTRICAL CHARACTERISTICS temperature range, otherwise specifications are at T LTC2632-HI12/-HI10/-HI8/-HZ12/-HZ10/-HZ8, LTC2632A-HI12/-HZ12 (V SYMBOL PARAMETER Reference Input Input Voltage Range Resistance Capacitance I Reference Current, Power-Down Mode REF Reference Output Output Voltage Reference Temperature Coefficient Output Impedance Capacitive Load Driving ...

Page 9

TIMING CHARACTERISTICS range, otherwise specifications are at T LTC2632-HI12/-HI10/-HI8/-HZ12/-HZ10/-HZ8, LTC2632A-HI12/-HZ12 (V SYMBOL PARAMETER t SDI Valid to SCK Setup 1 t SDI Valid to SCK Hold 2 t SCK High Time 3 t SCK Low Time 4 t CS/LD Pulse ...

Page 10

LTC2632 TYPICAL PERFORMANCE CHARACTERISTICS T = 25°C, unless otherwise noted. LTC2632-L12 (Internal Reference Integral Nonlinearity (INL) 1 0.5 0 –0.5 –1.0 0 1024 2048 CODE INL vs Temperature 1 0.5 ...

Page 11

TYPICAL PERFORMANCE CHARACTERISTICS T = 25°C, unless otherwise noted. LTC2632-H12 (Internal Reference Integral Nonlinearity (INL) 1 0.5 0 –0.5 –1.0 0 1024 2048 CODE INL vs Temperature 1 INL (POS) ...

Page 12

LTC2632 TYPICAL PERFORMANCE CHARACTERISTICS LTC2632-10 Integral Nonlinearity (INL) 1 2.5V FS INTERNAL REF 0.5 0 –0.5 –1.0 0 256 512 CODE LTC2632-8 Integral Nonlinearity (INL) 0. 2.5V FS ...

Page 13

TYPICAL PERFORMANCE CHARACTERISTICS LTC2632 Large-Signal Response V OUT 0.5V/DIV 1/4 SCALE to 3/4 SCALE 2µs/DIV 2632 G22 Headroom at Rails vs Output Current 5.0 5V SOURCING 4.5 4.0 3.5 3V (LTC2632-L) SOURCING 3.0 ...

Page 14

LTC2632 TYPICAL PERFORMANCE CHARACTERISTICS LTC2632 Multiplying Bandwidth 2 0 –2 –4 –6 –8 –10 – – REF(DC 0.2V –16 REF(AC) P-P CODE = FULL-SCALE –18 1k 10k FREQUENCY (Hz) Gain Error ...

Page 15

PIN FUNCTIONS SCK (Pin 1): Serial Interface Clock Input. CMOS and TTL compatible. CS/LD (Pin 2): Serial Interface Chip Select/Load Input. When CS/LD is low, SCK is enabled for shifting data on SDI into the register. When CS/LD is taken ...

Page 16

LTC2632 BLOCK DIAGRAM GND OUTA DAC A CS/LD SCK TIMING DIAGRAM SCK SDI CS/LD 16 INTERNAL REFERENCE CONTROL DECODE LOGIC 32-BIT SHIFT REGISTER ...

Page 17

OPERATION The LTC2632 is a family of dual voltage output DACs in an 8-lead TSOT package. Each DAC can operate rail-to-rail using an external reference, or with its full-scale voltage set by an integrated reference. Fifteen combinations of accuracy (12-, ...

Page 18

LTC2632 OPERATION INPUT WORD (LTC2632-12) COMMAND ADDRESS INPUT WORD (LTC2632-10) COMMAND ADDRESS INPUT WORD (LTC2632-8) COMMAND ADDRESS Serial Interface The CS/LD input ...

Page 19

OPERATION Reference Modes For applications where an accurate external reference is not available, nor desirable due to limited space, the LTC2632 has a user-selectable, integrated reference. The integrated reference voltage is internally amplified provide the full-scale DAC ...

Page 20

LTC2632 OPERATION Voltage Output The LTC2632’s integrated rail-to-rail amplifier has guar- anteed load regulation when sourcing or sinking up to 10mA at 5V, and 5mA at 3V. Load regulation is a measure of the amplifier’s ability to maintain the rated ...

Page 21

OPERATION LTC2632 2632fa 21 ...

Page 22

LTC2632 OPERATION OUTPUT VOLTAGE 0V NEGATIVE INPUT CODE OFFSET (b) Figure 4. Effects of Rail-to-Rail Operation On a DAC Transfer Curve (Shown for 12 Bits) (a) Overall Transfer Function (b) Effect of Negative Offset for Codes Near Zero (c) Effect ...

Page 23

... Revised part numbering 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. LTC2632 PAGE NUMBER ...

Page 24

... Internal 10ppm/°C (Max) Reference www.linear.com ● OUTA 5V 0.1µF – LT6240 + 10V 5V REF V CC 0.1µ OUT LT1991 P1 DAC B REF GND –10V 2632 TA02 2 C Interface LT 0311 REV A • PRINTED IN USA  LINEAR TECHNOLOGY CORPORATION 2011 0.1µF V OUT ±6V 0.1µF 2632fa ...

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