LTC1860CMS8#TR Linear Technology, LTC1860CMS8#TR Datasheet

IC A/D CONV 1CH 12BIT 8-MSOP

LTC1860CMS8#TR

Manufacturer Part Number
LTC1860CMS8#TR
Description
IC A/D CONV 1CH 12BIT 8-MSOP
Manufacturer
Linear Technology
Datasheet

Specifications of LTC1860CMS8#TR

Number Of Bits
12
Sampling Rate (per Second)
250k
Data Interface
MICROWIRE™, Serial, SPI™
Number Of Converters
1
Power Dissipation (max)
1.25mW
Voltage Supply Source
Single Supply
Operating Temperature
0°C ~ 70°C
Mounting Type
Surface Mount
Package / Case
8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Other names
LTC1860CMS8TR

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
LTC1860CMS8#TRLTC1860CMS8
Manufacturer:
LT
Quantity:
10 000
Company:
Part Number:
LTC1860CMS8#TRLTC1860CMS8#PBF
Manufacturer:
LINEAR/凌特
Quantity:
20 000
FEATURES
APPLICATIONS
n
n
n
n
n
n
n
n
n
n
n
n
n
n
TYPICAL APPLICATION
12-Bit 250ksps ADCs in MSOP Package
Single 5V Supply
Low Supply Current: 850μA (Typ)
Auto Shutdown Reduces Supply Current
to 2μA at 1ksps
True Differential Inputs
1-Channel (LTC1860) or 2-Channel (LTC1861)
Versions
SPI/MICROWIRE
High Speed Upgrade to LTC1286/LTC1298
Pin Compatible with 16-Bit LTC1864/LTC1865
Guaranteed Operation to 125°C (MSOP Package)
High Speed Data Acquisition
Portable or Compact Instrumentation
Low Power Battery-Operated Instrumentation
Isolated and/or Remote Data Acquisition
ANALOG INPUT
0V TO 5V
Single 5V Supply, 250ksps, 12-Bit Sampling ADC
1
2
3
4
V
IN
IN
GND
REF
+
LTC1860
TM
Compatible Serial I/O
CONV
SDO
SCK
V
1 F
CC
1860 TA01
8
7
6
5
5V
SERIAL DATA LINK TO
ASIC, PLD, MPU, DSP
OR SHIFT REGISTERS
1- and 2-Channel ADCs in MSOP
DESCRIPTION
The LTC
offered in MSOP and SO-8 packages and operate on a single
5V supply. At 250ksps, the supply current is only 850μA.
The supply current drops at lower speeds because the
LTC1860/LTC1861 automatically power down to a typical
supply current of 1nA between conversions. These 12-bit
switched capacitor successive approximation ADCs include
sample-and-holds. The LTC1860 has a differential analog
input with an adjustable reference pin. The LTC1861 offers
a software-selectable 2-channel MUX and an adjustable
reference pin on the MSOP version.
The 3-wire, serial I/O, MSOP or SO-8 package and
extremely high sample rate-to-power ratio make these
ADCs ideal choices for compact, low power, high speed
systems.
These ADCs can be used in ratiometric applications or
with external references. The high impedance analog in-
puts and the ability to operate with reduced spans down
to 1V full scale, allow direct connection to signal sources
in many applications, eliminating the need for external
gain stages.
All other trademarks are the property of their respective owners.
, LT, LTC and LTM are registered trademarks of Linear Technology Corporation.
®
1860/LTC1861 are 12-bit A/D converters that are
1000
0.01
Supply Current vs Sampling Frequency
100
0.1
10
1
0.01
µPower, 12-Bit, 250ksps
0.1
LTC1860/LTC1861
SAMPLING FREQUENCY (kHz)
1
10
100
1860 TA02
1000
18601fa
1

Related parts for LTC1860CMS8#TR

LTC1860CMS8#TR Summary of contents

Page 1

... LT, LTC and LTM are registered trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners. Supply Current vs Sampling Frequency 1000 ...

Page 2

LTC1860/LTC1861 ABSOLUTE MAXIMUM RATINGS (Notes 1, 2) Supply Voltage (V ) .................................................7V CC Ground Voltage Difference AGND, DGND LTC1861 MSOP Package .............±0.3V Analog Input ....................(GND – 0.3V Digital Input .................................... (GND – 0.3V Digital Output ................... ...

Page 3

... ORDER INFORMATION LEAD FREE FINISH TAPE AND REEL LTC1860CMS8#PBF LTC1860CMS8#TRPBF LTC1860IMS8#PBF LTC1860IMS8#PBF LTC1860HMS8#PBF LTC1860HMS8#PBF LTC1860CS8#PBF LTC1860CS8#PBF LTC1860IS8#PBF LTC1860IS8#PBF LTC1861CMS#PBF LTC1861CMS#PBF LTC1861IMS#PBF LTC1861IMS#PBF LTC1861HMS#PBF LTC1861HMS#PBF LTC1861CS8#PBF LTC1861CS8#PBF LTC1861IS8#PBF LTC1861IS8#PBF LEAD BASED FINISH TAPE AND REEL LTC1860CMS8 LTC1860CMS8 LTC1860IMS8 LTC1860IMS8 LTC1860HMS8 LTC1860HMS8 LTC1860CS8 ...

Page 4

LTC1860/LTC1861 CONVERTER AND MULTIPLEXER CHARACTERISTICS The ● denotes specifi cations which apply over the full operating temperature range, otherwise specifi cations are 5V 5V defi ned in Recommended Operating Conditions, unless ...

Page 5

DIGITAL AND DC ELECTRICAL CHARACTERISTICS over the full operating temperature range, otherwise specifi cations are T SYMBOL PARAMETER I Hi-Z Output Leakage OZ I Output Source Current SOURCE I Output Sink Current SINK I Reference Current (LTC1860 SO-8, REF MSOP ...

Page 6

LTC1860/LTC1861 TIMING CHARACTERISTICS range, otherwise specifi cations are T A Conditions, unless otherwise noted. SYMBOL PARAMETER t Conversion Time (See Figure 1) CONV f Maximum Sampling Frequency SMPL(MAX) t Delay Time, SCK↓ to SDO Data Valid dDO t Delay Time, ...

Page 7

TYPICAL PERFORMANCE CHARACTERISTICS Supply Current vs Sampling Frequency 1000 CONV LOW = 800ns 100 0.1 0.01 0.01 0.1 1.0 10 100 1000 SAMPLING FREQUENCY (kHz) 1860/61 G01 Reference Current ...

Page 8

LTC1860/LTC1861 TYPICAL PERFORMANCE CHARACTERISTICS Change in Offset Error vs Reference Voltage –1 –2 –3 –4 – REFERENCE VOLTAGE (V) 1860/61 ...

Page 9

PIN FUNCTIONS LTC1860 V (Pin 1): Reference Input. The reference input defi nes REF the span of the A/D converter and must be kept free of noise with respect to GND. + – (Pins 2, 3): Analog ...

Page 10

LTC1860/LTC1861 FUNCTIONAL BLOCK DIAGRAM PIN NAMES IN PARENTHESES REFER TO LTC1861 + IN (CH0) – IN (CH1) GND TEST CIRCUITS Load Circuit for dDO r f TEST POINT V 3k SDO t 20pF ...

Page 11

APPLICATIONS INFORMATION CONV t CONV SCK SDO • • • ...

Page 12

LTC1860/LTC1861 APPLICATIONS INFORMATION CONV t CONV SDI SCK SDO • • • ...

Page 13

APPLICATIONS INFORMATION Reference Input The reference input of the LTC1861 SO-8 package is internally tied The span of the A/D converter is CC therefore equal The voltage on the reference input CC of the ...

Page 14

LTC1860/LTC1861 PACKAGE DESCRIPTION 0.889 0.127 (.035 .005) 5.23 3.20 – 3.45 (.206) (.126 – .136) MIN 0.42 0.038 0.65 (.0256) (.0165 .0015) TYP BSC RECOMMENDED SOLDER PAD LAYOUT NOTE: 1. DIMENSIONS IN MILLIMETER/(INCH) 2. DRAWING NOT TO SCALE 3. DIMENSION ...

Page 15

... MOLD FLASH OR PROTRUSIONS SHALL NOT EXCEED .006" (0.15mm) 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 16

... SO-8, MS8, 1-Channel, 5V/SO-8, MS10, 2-Channel, 5V Bandgap, 130μA Supply Current, 10ppm/°C, Available in SOT-23 60μA Supply Current, 10ppm/°C, SOT-23 www.linear.com ● 4.096V 0 REF 0 REF 7 SCK 6 SDO 5 CONV GND 4 1860 TA03 LT 1207 REV A • PRINTED IN USA © LINEAR TECHNOLOGY CORPORATION 2007 18601fa ...

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