LTC2642AIDD-16#PBF Linear Technology, LTC2642AIDD-16#PBF Datasheet

IC DAC 16BIT VOUT 10-DFN

LTC2642AIDD-16#PBF

Manufacturer Part Number
LTC2642AIDD-16#PBF
Description
IC DAC 16BIT VOUT 10-DFN
Manufacturer
Linear Technology
Datasheet

Specifications of LTC2642AIDD-16#PBF

Settling Time
1µs
Number Of Bits
16
Data Interface
Serial
Number Of Converters
1
Voltage Supply Source
Single Supply
Power Dissipation (max)
600µW
Operating Temperature
-40°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
10-DFN
Lead Free Status / RoHS Status
Lead free / RoHS Compliant

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
LTC2642AIDD-16#PBFLTC2642AIDD-16
Manufacturer:
LT
Quantity:
10 000
Company:
Part Number:
LTC2642AIDD-16#PBFLTC2642AIDD-16
Manufacturer:
LINEAR/凌特
Quantity:
20 000
FEATURES
APPLICATIONS
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TYPICAL APPLICATION
Tiny 3mm × 3mm 8-Pin DFN Package
Maximum 16-Bit INL Error: ±1LSB over Temperature
Low 120μA Supply Current
Guaranteed Monotonic over Temperature
Low 0.5nV•sec Glitch Impulse
2.7V to 5.5V Single Supply Operation
Fast 1μs Settling Time to 16 Bits
Unbuffered Voltage Output Directly Drives 60k Loads
50MHz SPI
Serial Interface
Power-On Reset Clears DAC Output to Zero Scale
(LTC2641) or Midscale (LTC2642)
Schmitt-Trigger Inputs for Direct Optocoupler
Interface
Asynchronous CLR Pin
8-Lead MSOP, 3mm × 3mm DFN, and 8-Lead SO
Packages (LTC2641)
10-Lead MSOP and 3mm × 3mm DFN Packages
(LTC2642)
High Resolution Offset and Gain Adjustment
Process Control and Industrial Automation
Automatic Test Equipment
Data Aquisition Systems
2.7V TO 5.5V
CS
SCLK
DIN
CLR
LTC2642
POWER-ON
CONTROL
RESET
LOGIC
V
TM
DD
/QSPI
16-BIT SHIFT REGISTER
16-BIT DATA LATCH
TM
0.1μF
/MICROWIRE
16-BIT DAC
REF
Bipolar 16-Bit DAC
1μF
GND
V
TM
0.1μF
R
INV
OUT
FB
Compatible
26412 TA01a
V
2V TO V
REF
5pF
DD
+
1/2 LT1678
16-/14-/12-Bit V
BIPOLAR V
–V
DESCRIPTION
The LTC
unbuffered voltage output DACs. These DACs operate from
a single 2.7V to 5.5V supply and are guaranteed monotonic
over temperature. The LTC2641A-16/LTC2642A-16 provide
16-bit performance (±1LSB INL and ±1LSB DNL) over
temperature. Unbuffered DAC outputs result in low supply
current of 120μA and a low offset error of ±1LSB.
Both the LTC2641 and LTC2642 feature a reference input
range of 2V to V
bipolar operation, the LTC2642 includes matched scaling
resistors for use with an external precision op amp (such
as the LT1678), generating a ±V
The LTC2641/LTC2642 use a simple SPI/MICROWIRE
compatible 3-wire serial interface which can be operated
at clock rates up to 50MHz and can interface directly
with optocouplers for applications requiring isolation. A
power-on reset circuit clears the LTC2641’s DAC output
to zero scale and the LTC2642’s DAC output to midscale
when power is initially applied. A logic low on the CLR pin
asynchronously clears the DAC to zero scale (LTC2641)
or midscale (LTC2642). These DACs are all specifi ed over
the commercial and industrial ranges.
L, LT, LTC and LTM are registered trademarks of Linear Technology Corporation.
All other trademarks are the property of their respective owners.
REF
TO V
OUT
REF
®
2641/LTC2642 are families of 16-, 14- and 12-bit
DD
. V
LTC2641/LTC2642
3mm × 3mm DFN
–1.0
–0.2
–0.4
–0.6
–0.8
0.2
1.0
0.8
0.6
0.4
OUT
0
LTC2642-16 Integral Nonlinearity
0
V
V
±2.5V RANGE
DD
REF
swings from 0V to V
= 5V
= 2.5V
16384
OUT
REF
32768
CODE
output swing at R
DACs in
49152
INL 25°C
INL 90°C
INL –45°C
26412 TA01b
65535
REF
26412fb
. For
1
FB
.

Related parts for LTC2642AIDD-16#PBF

LTC2642AIDD-16#PBF Summary of contents

Page 1

... DAC to zero scale (LTC2641) or midscale (LTC2642). These DACs are all specifi ed over the commercial and industrial ranges. L, LT, LTC and LTM are registered trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners. V REF ...

Page 2

LTC2641/LTC2642 ABSOLUTE MAXIMUM RATINGS V to GND .................................................. –0. CS, SCLK, DIN, CLR to GND ........................ –0. REF , V , INV to GND ......... –0. OUT R to INV ....................................................... –6V to ...

Page 3

... LTC2641AIMS8-16#PBF LTC2641AIMS8-16#TRPBF LTC2641IMS8-16#PBF LTC2641IMS8-16#TRPBF LTC2641IMS8-14#PBF LTC2641IMS8-14#TRPBF LTC2641IMS8-12#PBF LTC2641IMS8-12#TRPBF LTC2641CS8-16#PBF LTC2641CS8-16#TRPBF LTC2641IS8-16#PBF LTC2641IS8-16#TRPBF LTC2642ACDD-16#PBF LTC2642ACDD-16#TRPBF LTC2642CDD-16#PBF LTC2642CDD-16#TRPBF LTC2642CDD-14#PBF LTC2642CDD-14#TRPBF LTC2642CDD-12#PBF LTC2642CDD-12#TRPBF LTC2642AIDD-16#PBF LTC2642AIDD-16#TRPBF LTC2642IDD-16#PBF LTC2642IDD-16#TRPBF LTC2642IDD-14#PBF LTC2642IDD-14#TRPBF LTC2642IDD-12#PBF LTC2642IDD-12#TRPBF LTC2642ACMS-16#PBF LTC2642ACMS-16#TRPBF LTC2642CMS-16#PBF LTC2642CMS-16#TRPBF LTC2642CMS-14#PBF LTC2642CMS-14#TRPBF LTC2642CMS-12#PBF LTC2642CMS-12#TRPBF LTC2642AIMS-16#PBF LTC2642AIMS-16#TRPBF LTC2642IMS-16#PBF LTC2642IMS-16#TRPBF LTC2642IMS-14#PBF ...

Page 4

LTC2641/LTC2642 ELECTRICAL CHARACTERISTICS temperature range, otherwise specifi cations are at T otherwise specified. SYMBOL PARAMETER CONDITIONS Static Peformance N Resolution Monotonicity DNL Differential Nonlinearity (Note 3) INL Integral Nonlinearity (Note 3) ZSE Zero Code Offset Error Code = 0 ZS ...

Page 5

ELECTRICAL CHARACTERISTICS temperature range, otherwise specifi cations are at T otherwise specified. SYMBOL PARAMETER I Digital Input Current IN C Digital Input Capacitance IN V Hysteresis Voltage H Power Supply V Supply Voltage DD I Supply Current ...

Page 6

LTC2641/LTC2642 TYPICAL PERFORMANCE CHARACTERISTICS Integral Nonlinearity (INL) 1.0 LTC2642-16 0 2.5V REF 0.6 0.4 0.2 0 –0.2 –0.4 –0.6 –0.8 –1.0 0 16384 32768 65535 49152 CODE 26412 G01 Differential Nonlinearity (DNL) 1.0 LTC2642-16 ...

Page 7

TYPICAL PERFORMANCE CHARACTERISTICS Bipolar Gain Error vs Temperature 2.5V REF –1 –2 –3 –4 –5 –40 – TEMPERATURE (°C) 26412 G10 14-Bit Integral Nonlinearity (INL) ...

Page 8

LTC2641/LTC2642 TYPICAL PERFORMANCE CHARACTERISTICS Supply Current ( Temperature 150 V = 2.5V REF 125 100 –40 – TEMPERATURE (°C) 26412 G19 Supply ...

Page 9

PIN FUNCTIONS LTC2641 – MSOP, DFN Packages REF (Pin 1): Reference Voltage Input. Apply an external reference at REF between 2V and V CS (Pin 2): Serial Interface Chip Select/Load Input. When CS is low, SCLK is enabled for shifting ...

Page 10

LTC2641/LTC2642 BLOCK DIAGRAMS LTC2641 - MSOP , DFN 7 1 REF V DD LTC2641-16 LTC2641-14 LTC2641-12 POWER-ON 16-/14-/12-BIT DAC RESET CS 2 SCLK 3 CONTROL 16-BIT DATA LATCH DIN LOGIC 4 CLR 16-BIT SHIFT REGISTER 5 10 LTC2641-16 V OUT ...

Page 11

TIMING DIAGRAM SCK SDI CS/LD OPERATION General Description The LTC2641/LTC2642 family of 16-/14-/12-bit voltage output DACs offer full 16-bit performance with less than ±1LSB integral linearity error and less than ±1LSB differ- ential linearity error, guaranteeing ...

Page 12

LTC2641/LTC2642 OPERATION high-to-low transition, the data on DIN is loaded, MSB fi rst, into the shift register on each rising edge of the serial clock input (SCLK). After 16 data bits have been loaded into the serial input register, a ...

Page 13

APPLICATIONS INFORMATION Unipolar Confi guration Figure 2 shows a typical unipolar DAC application for the LTC2641. Tables 1a, 1b and 1c show the unipolar binary code tables for 16-bit, 14-bit and 12-bit operation. V REF 2.5V 0.1μF 5V/3V 0.1μF 1 ...

Page 14

LTC2641/LTC2642 APPLICATIONS INFORMATION Bipolar Confi guration Figure 3 shows a typical bipolar DAC application for the LTC2642. The on-chip bipolar offset/gain resistors, R and R , are connected to an external amplifi produce INV a bipolar output swing ...

Page 15

APPLICATIONS INFORMATION Unbuffered Operation and V Loading OUT The DAC output is available directly at the V swings from GND Unbuffered operation provides REF the lowest possible offset, full-scale and linearity errors, the fastest settling time and ...

Page 16

LTC2641/LTC2642 APPLICATIONS INFORMATION such as the LTC6078 is suitable, if the application does not require linear operation very near to GND, or zero scale (Figure 2). The LTC6078 typically swings to within 1mV of GND not required ...

Page 17

APPLICATIONS INFORMATION Op Amp Specifi cations and Bipolar DAC Accuracy The op amp contributions to unipolar DAC error discussed above apply equally to bipolar operation. The bipolar ap- plication circuit gains up the DAC span, and all errors ...

Page 18

LTC2641/LTC2642 APPLICATIONS INFORMATION as the external reference remains stable with the added capacative loading. Digital Inputs and Interface Logic All of the digital inputs include Schmitt-trigger buffers to accept slow transition interfaces. This means that op- tocuplers can interface directly ...

Page 19

APPLICATIONS INFORMATION on the digital inputs is imperceptible, thanks to the digital input hysteresis) Just by maintaining separate areas on the GND plane where analog and digital return currents naturally fl ow, good results are generally achieved. Only after this ...

Page 20

LTC2641/LTC2642 PACKAGE DESCRIPTION 3.50 ±0.05 1.65 ±0.05 2.15 ±0.05 (2 SIDES) 0.25 ± 0.05 0.50 BSC 2.38 ±0.05 (2 SIDES) RECOMMENDED SOLDER PAD PITCH AND DIMENSIONS NOTE: 1. DRAWING TO BE MADE A JEDEC PACKAGE OUTLINE M0-229 VARIATION OF (WEED-2). ...

Page 21

PACKAGE DESCRIPTION .050 BSC .245 MIN .030 ±.005 TYP RECOMMENDED SOLDER PAD LAYOUT .010 – .020 (0.254 – 0.508) .008 – .010 (0.203 – 0.254) NOTE: 1. DIMENSIONS IN 2. DRAWING NOT TO SCALE 3. THESE DIMENSIONS DO NOT INCLUDE ...

Page 22

LTC2641/LTC2642 PACKAGE DESCRIPTION 0.889 ± 0.127 (.035 ± .005) 5.23 3.20 – 3.45 (.206) (.126 – .136) MIN 0.65 0.42 ± 0.038 (.0165 ± .0015) (.0256) TYP BSC RECOMMENDED SOLDER PAD LAYOUT NOTE: 1. DIMENSIONS IN MILLIMETER/(INCH) 2. DRAWING NOT ...

Page 23

... LEAD COPLANARITY (BOTTOM OF LEADS AFTER FORMING) SHALL BE 0.102mm (.004") MAX 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 24

... LT6010 150μA 8nV/√Hz Rail-to-Rail Output Precision Op Amp LTC6078 Dual CMOS Rail-to-Rail Input/Output Amplifi er References LT1019 Precision Bandgap Reference SoftSpan is a trademark of Linear Technology Corporation. Linear Technology Corporation 24 1630 McCarthy Blvd., Milpitas, CA 95035-7417 (408) 432-1900 FAX: (408) 434-0507 ● ...

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