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Linear Technology Electronic Components Datasheet

LTC1864 Datasheet

(LTC1864 / LTC1865) 16-Bit 1/2-Channel 250ksps ADCs

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LTC1864 pdf
( DataSheet : www.DataSheet4U.com )
FEATURES
s 16-Bit 250ksps ADCs in MSOP Package
s Single 5V Supply
s Low Supply Current: 850µA (Typ)
s Auto Shutdown Reduces Supply Current
to 2µA at 1ksps
s True Differential Inputs
s 1-Channel (LTC1864) or 2-Channel (LTC1865)
Versions
s SPI/MICROWIRETM Compatible Serial I/O
s 16-Bit Upgrade to 12-Bit LTC1286/LTC1298
s Pin Compatible with 12-Bit LTC1860/LTC1861
U
APPLICATIO S
s High Speed Data Acquisition
s Portable or Compact Instrumentation
s Low Power Battery-Operated Instrumentation
s Isolated and/or Remote Data Acquisition
LTC1864/LTC1865
µPower, 16-Bit, 250ksps
1- and 2-Channel ADCs in MSOP
DESCRIPTIO
The LTC®1864/LTC1865 are 16-bit A/D converters that are
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 LTC1864/LTC1865 automatically power down
between conversions. These 16-bit switched capacitor
successive approximation ADCs include sample-and-holds.
The LTC1864 has a differential analog input with an
adjustable reference pin. The LTC1865 offers a software-
selectable 2-channel MUX and an adjustable reference pin
on the MSOP version.
The 3-wire, serial I/O, small 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
inputs 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.
, LTC and LT are registered trademarks of Linear Technology Corporation.
MICROWIRE is a trademark of National Semiconductor Corporation.
TYPICAL APPLICATIO
Single 5V Supply, 250ksps, 16-Bit Sampling ADC
1µF
5V
ANALOG INPUT
0V TO 5V
LTC1864
1
VREF
2 IN+
8
VCC
7
SCK
3 IN
6
SDO
4
GND
5
CONV
1864 TA01
SERIAL DATA LINK TO
ASIC, PLD, MPU, DSP
OR SHIFT REGISTERS
www.DataSheet4U.com
Supply Current vs Sampling Frequency
1000
100
10
1
0.1
0.01
0.01
0.1 1 10 100
SAMPLING FREQUENCY (kHz)
1000
186w4 TwA02w.DataSheet4U.com
18645f
1


Linear Technology Electronic Components Datasheet

LTC1864 Datasheet

(LTC1864 / LTC1865) 16-Bit 1/2-Channel 250ksps ADCs

No Preview Available !

LTC1864 pdf
LTC1864/LTC1865
ABSOLUTE AXI U RATI GS (Notes 1, 2)
Supply Voltage (VCC) ................................................. 7V Operating Temperature Range
Ground Voltage Difference
LTC1864C/LTC1865C/
AGND, DGND LTC1865 MSOP Package ........... ±0.3V
LTC1864AC/LTC1865AC ........................ 0°C to 70°C
Analog Input ............... (GND – 0.3V) to (VCC + 0.3V)
Digital Input ................................ (GND – 0.3V) to 7V
LTC1864I/LTC1865I/
LTC1864AI/LTC1865AI ..................... – 40°C to 85°C
Digital Output .............. (GND – 0.3V) to (VCC + 0.3V) Storage Temperature Range ................. – 65°C to 150°C
Power Dissipation .............................................. 400mW Lead Temperature (Soldering, 10 sec)................. 300°C
UW U
PACKAGE/ORDER I FOR ATIO
TOP VIEW
VIRNE+F
1
2
IN¯ 3
GND 4
8 VCC
7 SCK
6 SDO
5 CONV
MS8 PACKAGE
8-LEAD PLASTIC MSOP
TJMAX = 150°C, θJA = 210°C/W
ORDER PART
NUMBER
LTC1864CMS8
LTC1864IMS8
LTC1864ACMS8
LTC1864AIMS8
MS8 PART MARKING
LTHQ LTVL
LTHR LTVM
TOP VIEW
ORDER PART
NUMBER
VREF 1
IN+ 2
IN3
GND 4
8 VCC
7 SCK
6 SDO
5 CONV
LTC1864CS8
LTC1864IS8
LTC1864ACS8
LTC1864AIS8
S8 PACKAGE
8-LEAD PLASTIC SO
TJMAX = 150°C, θJA = 175°C/W
S8 PART MARKING
1864 1864A
1864I 1864AI
Consult LTC Marketing for parts specified with wider operating temperature ranges.
CONV 1
CH0 2
CH1 3
AGND 4
DGND 5
TOP VIEW
10 VREF
9 VCC
8 SCK
7 SDO
6 SDI
MS PACKAGE
10-LEAD PLASTIC MSOP
TJMAX = 150°C, θJA = 210°C/W
TOP VIEW
CONV 1
CH0 2
CH1 3
GND 4
8 VCC
7 SCK
6 SDO
5 SDI
S8 PACKAGE
8-LEAD PLASTIC SO
TJMAX = 150°C, θJA = 175°C/W
ORDER PART
NUMBER
LTC1865CMS
LTC1865IMS
LTC1865ACMS
LTC1865AIMS
MS PART MARKING
LTHS LTVN
LTHT LTVP
ORDER PART
NUMBER
LTC1865CS8
LTC1865IS8
LTC1865ACS8
LTC1865AIS8
S8 PART MARKING
1865 1865A
1865I 1865AI
CO VERTER A D ULTIPLEXER CHARACTERISTICS
The q denotes specifications which apply over the full operating temperature range, otherwise specifications are TA = 25°C.
VCC = 5V, VREF = 5V, fSCK = fSCK(MAX) as defined in Recommended Operating Conditions, unless otherwise noted.
PARAMETER
CONDITIONS
LTC1864/LTC1865
MIN TYP MAX
LTC1864A/LTC1865A
MIN TYP MAX
UNITS
Resolution
q 16
16
Bits
No Missing Codes Resolution
q 14
15
Bits
INL (Note 3)
q ±8
±6 LSB
Transition Noise
Gain Error
1.1
q ±20
1.1
± 20
LSBRMS
mV
18645f
2


Part Number LTC1864
Description (LTC1864 / LTC1865) 16-Bit 1/2-Channel 250ksps ADCs
Maker Linear Technology
Total Page 20 Pages
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