2-Channel ADCs. LTC1864L Datasheet

LTC1864L ADCs. Datasheet pdf. Equivalent


Part LTC1864L
Description 1- and 2-Channel ADCs
Feature U U FEATURES ■ 16-Bit 150ksps ADCs in MSOP Package ■ Single 3V Supply ■ Low Supply Current: 450µA (.
Manufacture Linear Technology
Datasheet
Download LTC1864L Datasheet


U U FEATURES ■ 16-Bit 150ksps ADCs in MSOP Package ■ Single LTC1864L Datasheet
Recommendation Recommendation Datasheet LTC1864L Datasheet




LTC1864L
FEATURES
16-Bit 150ksps ADCs in MSOP Package
Single 3V Supply
Low Supply Current: 450µA (Typ)
Auto Shutdown Reduces Supply Current
to 10µA at 1ksps
True Differential Inputs
1-Channel (LTC1864L) or 2-Channel (LTC1865L)
Versions
SPI/MICROWIRETM Compatible Serial I/O
16-Bit Upgrade to 12-Bit LTC1285/LTC1288
Pin Compatible with 12-Bit LTC1860L/LTC1861L
No Minimum Data Transfer Rate
U
APPLICATIO S
High Speed Data Acquisition
Portable or Compact Instrumentation
Low Power Battery-Operated Instrumentation
Isolated and/or Remote Data Acquisition
LTC1864L/LTC1865L
µPower, 3V, 16-Bit, 150ksps
1- and 2-Channel ADCs in MSOP
DESCRIPTIO
The LTC®1864L/LTC1865L are 16-bit A/D converters that
are offered in MSOP and SO-8 packages and operate on a
single 3V supply. At 150ksps, the supply current is only
450µA. The supply current drops at lower speeds because
the LTC1864L/LTC1865L automatically power down
between conversions. These 16-bit switched capacitor
successive approximation ADCs include sample-and-holds.
The LTC1864L has a differential analog input with an
external reference pin. The LTC1865L offers a software-
selectable 2-channel MUX and an external 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 3V Supply, 150ksps, 16-Bit Sampling ADC
1µF
3V
ANALOG INPUT
0V TO 3V
LTC1864L
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
Supply Current vs Sampling Frequency
1000
100
CONV LOW = 2µs
TA = 25°C
VCC = 2.7V
10
1
0.1
0.01
0.1 1 10 100
SAMPLING FREQUENCY (kHz)
1000
1864L/65L TA02
sn18645L 18645Lfs
1



LTC1864L
LTC1864L/LTC1865L
ABSOLUTE AXI U RATI GS (Notes 1, 2)
Supply Voltage (VCC) ................................................. 7V Operating Temperature Range
Ground Voltage Difference
LTC1864LC/LTC1865LC/
AGND, DGND LTC1865L MSOP Package ......... ±0.3V
LTC1864LAC/LTC1865LAC .................... 0°C to 70°C
Analog Input ............... (GND – 0.3V) to (VCC + 0.3V)
Digital Input ................................ (GND – 0.3V) to 7V
LTC1864LI/LTC1865LI/
LTC1864LAI/LTC1865LAI ................. – 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
LTC1864LCMS8
LTC1864LIMS8
LTC1864LACMS8
LTC1864LAIMS8
MS8 PART MARKING
LTC7
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
ORDER PART
NUMBER
LTC1865LCMS
LTC1865LIMS
LTC1865LACMS
LTC1865LAIMS
MS PART MARKING
LTJ4
TOP VIEW
ORDER PART
NUMBER
VREF 1
IN+ 2
IN3
GND 4
8 VCC
7 SCK
6 SDO
5 CONV
LTC1864LCS8
LTC1864LIS8
LTC1864LACS8
LTC1864LAIS8
S8 PACKAGE
8-LEAD PLASTIC SO
TJMAX = 150°C, θJA = 175°C/W
S8 PART MARKING
1864L 1864LA
1864LI 864LAI
Consult LTC Marketing for parts specified with wider operating temperature ranges.
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
LTC1865LCS8
LTC1865LIS8
LTC1865LACS8
LTC1865LAIS8
S8 PART MARKING
1865L 1865LA
1865LI 865LAI
CO VERTER A D ULTIPLEXER CHARACTERISTICS
The denotes specifications which apply over the full operating temperature range, otherwise specifications are TA = 25°C.
VCC = 2.7V, VREF = 2.5V, fSCK = fSCK(MAX) as defined in Recommended Operating Conditions, unless otherwise noted.
PARAMETER
CONDITIONS
LTC1864L/LTC1865L
MIN TYP MAX
LTC1864LA/LTC1865LA
MIN TYP MAX
Resolution
16
16
No Missing Codes Resolution
14
15
INL
Transition Noise
(Note 3)
±8
2
±6
2
Gain Error
±20
± 20
UNITS
Bits
Bits
LSB
LSBRMS
mV
2
sn18645L 18645Lfs







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