LTC2635CMSE-LZ8#TRPBF Linear Technology, LTC2635CMSE-LZ8#TRPBF Datasheet

IC DAC 8BIT I2C QUAD 10-MSOP

LTC2635CMSE-LZ8#TRPBF

Manufacturer Part Number
LTC2635CMSE-LZ8#TRPBF
Description
IC DAC 8BIT I2C QUAD 10-MSOP
Manufacturer
Linear Technology
Datasheet

Specifications of LTC2635CMSE-LZ8#TRPBF

Settling Time
3.5µs
Number Of Bits
8
Data Interface
I²C
Number Of Converters
4
Voltage Supply Source
Single Supply
Operating Temperature
0°C ~ 70°C
Mounting Type
Surface Mount
Package / Case
10-MSOP Exposed Pad, 10-HMSOP, 10-eMSOP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Power Dissipation (max)
-

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
LTC2635CMSE-LZ8#TRPBFLTC2635CMSE-LZ8
Manufacturer:
LT
Quantity:
10 000
Company:
Part Number:
LTC2635CMSE-LZ8#TRPBFLTC2635CMSE-LZ8#PBF
Manufacturer:
LINEAR/凌特
Quantity:
20 000
applications
Block Diagram
Features
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
Integrated Precision Reference
2.5V Full-Scale 10ppm/°C (LTC2635-L)
4.096V Full-Scale 10ppm/°C (LTC2635-H)
Maximum INL Error: ±2.5 LSB (LTC2635-12)
Power-On-Reset to Zero-Scale/Mid-Scale/Hi-Z
Low Noise: 0.75mV
Guaranteed Monotonic Over –40°C to 125°C
Automotive Temperature Range
Selectable Internal or External Reference
2.7V to 5.5V Supply Range (LTC2635-L)
Ultralow Crosstalk Between DACs (3nV•s)
Low Power: 0.6mA at 3V
Double-Buffered Data Latches
Small 16-Pin 3mm × 3mm QFN and 10-Lead MSOP
Packages
Mobile Communications
Process Control and Industrial Automation
Power Supply Margining
Portable Equipment
Automotive
( ) QFN PACKAGE ONLY
V
GND
(REFLO)
V
REF
V
(LDAC)
CA0
(CA1)
(CA2)
OUTA
OUTB
ADDRESS
DECODE
DAC A
DAC B
I
2
C
P-P
0.1Hz to 200kHz
I
2
C INTERFACE
DECODE
REFERENCE
INTERNAL
DACs with 10ppm/°C Reference
SWITCH
DAC D
DAC C
POWER-ON
RESET
V
REF
Quad 12-/10-/8-Bit I
V
V
OUTD
OUTC
Description
SDA
REF
V
SCL
The LTC
voltage-output DACs with an integrated, high-accuracy,
low-drift reference in a 16-pin QFN or a 10-lead MSOP
package. It has rail-to-rail output buffers and is guaran-
teed monotonic. The LTC2635-L has a full-scale output
of 2.5V, and operates from a single 2.7V to 5.5V supply.
The LTC2635-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 2-wire I
serial interface. The LTC2635 operates in both the standard
mode (clock rate of 100kHz) and the fast mode (clock rate
of 400kHz). The LTC2635 incorporates a power-on reset
circuit. Options are available for reset to zero-scale, reset
to mid-scale in internal reference mode, reset to mid-scale
in external reference mode, or reset with all DAC outputs
in a high-impedance state after power-up.
L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks and
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, 7414561.
V
CC
2635 BD
REF
®
2635 is a family of quad 12-, 10-, and 8-bit
–1
–2
2
1
0
0
V
INTERNAL REF .
CC
= 3V
Integral Nonlinerity
1024
CODE
2048
LTC2635
2
3072
2
C V
C-compatible
2635 TA01
4095
OUT
2635fb


Related parts for LTC2635CMSE-LZ8#TRPBF

LTC2635CMSE-LZ8#TRPBF Summary of contents

Page 1

... L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks and 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, 7414561. ...

Page 2

LTC2635 aBsolute maximum ratings (Notes 1, 2) Supply Voltage (V ) ................................... –0. SCL, SDA, REFLO, LDAC .............................. –0. CA0, CA1, CA2 ...... –0.3V to Min (V OUTA-D REF .................................... –0.3V to Min ...

Page 3

LTC2635 C UD – Consult LTC Marketing for information on non-standard lead based finish parts. 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: ...

Page 4

... LTC2635-HZ10 LDZK LTFBH 4.096V • (1023/1024) LTC2635-HZ8 LDZS LTFBQ *Above options are available in a 16-pin QFN package (LTC2635xUD) or 10-lead MSOP package (LTC2635xMSE). **Contact Linear Technology for other Hi-Z options.  POWER-ON POWER-ON REFERENCE REFERENCE RESET TO CODE 2.5V • (4095/4096) Mid-Scale 2.5V • ...

Page 5

T LTC2635-LMI12/-LMI10/-LMI8/-LMX12/-LMX10/-LMX8/-LZ12/-LZ10/-LZ8/-LMO12/-LMO10/-LM08 (V SYMBOL PARAMETER CONDITIONS DC Performance Resolution Monotonicity V = 3V, Internal Ref. (Note 4) CC DNL Differential Nonlinearity V = 3V, Internal Ref. (Note 4) CC INL Integral Nonlinearity ...

Page 6

LTC2635 electrical characteristics temperature range, otherwise specifications are at T LTC2635-LMI12/-LMI10/-LMI8/-LMX12/-LMX10/-LMX8/-LZ12/-LZ10/-LZ8/-LMO12/-LMO10/-LM08 (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 ...

Page 7

T LTC2635-LMI12/-LMI10/-LMI8/-LMX12/-LMX10/-LMX8/-LZ12/-LZ10/-LZ8/-LMO12/-LMO10/-LM08 (V SYMBOL PARAMETER AC Performance t Settling Time S Voltage Output Slew Rate Capacitive Load Driving Glitch Impulse DAC-to-DAC Crosstalk Multiplying Bandwidth e Output Voltage Noise Density n Output Voltage ...

Page 8

LTC2635 electrical characteristics temperature range, otherwise specifications are at T LTC2635-HMI12/-HMI10/-HMI8/-HZ12/-HZ10/-HZ8 (V SYMBOL PARAMETER CONDITIONS DC Performance Resolution Monotonicity V = 5V, Internal Ref. (Note 4) CC DNL Differential Nonlinearity V = 5V, Internal Ref. (Note 4) CC INL Integral ...

Page 9

T LTC2635-HMI12/-HMI10/-HMI8/-HZ12/-HZ10/-HZ8 (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 10

LTC2635 electrical characteristics temperature range, otherwise specifications are at T LTC2635-HMI12/-HMI10/-HMI8/-HZ12/-HZ10/-HZ8 (V SYMBOL PARAMETER AC Performance t Settling Time S Voltage Output Slew Rate Capacitive Load Driving Glitch Impulse DAC-to-DAC Crosstalk Multiplying Bandwidth e Output Voltage Noise Density n Output ...

Page 11

Note 1. Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. Exposure to any Absolute Maximum Rating condition for extended periods may affect device reliability and lifetime. Note 2. All voltages are ...

Page 12

LTC2635 typical perFormance characteristics LTC2635-L12 (Internal Reference 2.5V) FS Integral Nonlinearity (INL) 1 0.5 0 –0.5 –1.0 0 1024 2048 CODE INL vs Temperature 1 0.5 INL (POS) 0 –0.5 ...

Page 13

LTC2635-H12 (Internal Reference Integral Nonlinearity (INL) 1 0.5 0 –0.5 –1.0 0 1024 2048 CODE INL vs Temperature 1 INL (POS) 0.5 0 INL (NEG) –0.5 –1.0 ...

Page 14

LTC2635 typical perFormance characteristics LTC2635-10 Integral Nonlinearity (INL) 1 2.5V FS INTERNAL REF 0.5 0 –0.5 –1.0 0 256 512 CODE LTC2635-8 Integral Nonlinearity (INL) 0. 2.5V FS ...

Page 15

LTC2635 Large-Signal Response V OUT 0.5V/DIV 1/4 SCALE to 3/4 SCALE 2µs/DIV 2635 G22 Headroom at Rails vs Output Current 5.0 5V SOURCING 4.5 4.0 3.5 3V (LTC2635-L) SOURCING 3.0 ...

Page 16

LTC2635 typical perFormance characteristics LTC2635 Mulitplying Bandwidth 2 0 –2 –4 –6 –8 –10 – – REF(DC 0.2V –16 REF(AC) P-P CODE = FULL-SCALE –18 1k 10k 100k FREQUENCY (Hz) 2635 ...

Page 17

Functions (MSOP/QFN) V (Pin 1/Pin 16): Supply Voltage Input. 2.7V ≤ 5.5V (LTC2635-L) or 4.5V ≤ Bypass to GND with a 0.1µF capacitor (Pins 9/Pins 1, 2, 11, 12): ...

Page 18

LTC2635 Block Diagram GND (REFLO) V OUTA DAC A V REF V OUTB DAC B (LDAC) CA0 I (CA1) ADDRESS DECODE (CA2 QFN PACKAGE ONLY  INTERNAL REFERENCE DECODE INTERFACE REF SWITCH V ...

Page 19

Test Circuits for I Test Circuit 1 100 CAn V /V IH(CAn) IL(CAn) timing Diagrams SDA LOW SCL t HD(STA) S ALL VOLTAGE LEVELS REFER Digital I/O (See Electrical Characteristics) R ...

Page 20

LTC2635 timing Diagrams SLAVE ADDRESS START SDA ACK SCL LDAC 0 1ST DATA BYTE 2ND DATA BYTE ...

Page 21

The LTC2635 is a family of quad voltage output DACs in 16-pin QFN and 10-lead MSOP packages. Each DAC can operate rail-to-rail using an external reference, or with its full-scale voltage set by an integrated reference. Eighteen combinations of ...

Page 22

LTC2635 operation Acknowledge The Acknowledge (ACK) signal is used for handshaking between the master and the slave. An ACK (active LOW) generated by the slave lets the master know that the lat- est byte of information was properly received. The ...

Page 23

Write Word Protocol The master initiates communication with the LTC2635 with a START condition and a 7-bit slave address followed by the Write bit ( The LTC2635 acknowledges by pulling the SDA pin low at the 9th ...

Page 24

LTC2635 operation Write Word Protocol for LTC2635 S W SLAVE ADDRESS Input Word (LTC2635-12 1ST DATA BYTE Input Word (LTC2635-10 1ST DATA BYTE Input Word (LTC2635- ...

Page 25

Any channel or combination of channels can be put into power-down mode by using command 0100b in combi- nation with the appropriate DAC address, (n). The supply current is reduced approximately 20% for each DAC powered down. The integrated ...

Page 26

LTC2635 operation this effect than any other parts of this type; on the con- trary, it allows layout-based performance improvements to shine rather than limiting attainable performance with excessive internal resistance. Another technique for minimizing errors is to use a ...

Page 27

OUTPUT VOLTAGE 0V NEGATIVE INPUT CODE OFFSET (b) Figure 5. Effects of Rail-to-Rail On a DAC Transfer Curve (Shown for 12 Bits). (a) Overall Transfer Function (b) Effect of Negative Offset for Codes Near Zero (c) Effect of Positive ...

Page 28

... LTC3850EUF 1nF 3.32k BG1 PGND I TH1 + SENSE RUN1 500kHz MODE/PLLIN TK/SS1 – SENSE 10nF V FB1 SGND 7 REF V CC 0.1µF LTC2635CMSE-LMOI2 2 DAC A DAC D 3 DAC B DAC C 4 CAO GND SCL BUS 6 SDA 2635 TA02 V IN 6.5V TO 14V 4.7µF 0.1µF 2.2µ ...

Page 29

Description 3.50 0.05 1.45 0.05 (4 SIDES) 2.10 0.05 RECOMMENDED SOLDER PAD PITCH AND DIMENSIONS 3.00 0.10 (4 SIDES) PIN 1 TOP MARK (NOTE 6) NOTE: 1. DRAWING CONFORMS TO JEDEC PACKAGE OUTLINE MO-220 VARIATION (WEED-2) 2. DRAWING NOT ...

Page 30

LTC2635 package Description 1.88 0.102 (.074 .004) 5.23 (.206) MIN 0.305 0.038 (.0120 .0015) TYP RECOMMENDED SOLDER PAD LAYOUT DETAIL “A” 0.254 (.010) GAUGE PLANE 0.18 (.007) NOTE: 1. DIMENSIONS IN MILLIMETER/(INCH) 2. DRAWING NOT TO SCALE 3. DIMENSION DOES ...

Page 31

... Added Typical Application drawing and revised Related Parts List 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. ...

Page 32

... SW1 3.32k 1nF BG1 LTC3850EUF PGND + SENSE I TH1 RUN1 – SENSE 500kHz MODE/PLLIN V TK/SS1 FB1 SGND 10nF 7 1 REF V CC LTC2635CMSE-LMOI2 0.1µ DAC A DAC DAC B DAC CAO GND SCL BUS 6 SDA 2635 TA03 COMMENTS DACs with 10ppm/°C ±4LSB INL Maximum at 16 Bits and ±2mV Offset Error, Rail-to-Rail Output, OUT 20-Lead 4mm × ...

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