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LTC1864LAIS8#TRPBF

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P16
1
LTC1864L/LTC1865L
sn18645L 18645Lfs
APPLICATIO S
U
FEATURES
DESCRIPTIO
U
TYPICAL APPLICATIO
U
µPower, 3V, 16-Bit, 150ksps
1- and 2-Channel ADCs in MSOP
Single 3V Supply, 150ksps, 16-Bit Sampling ADC
Supply Current vs Sampling Frequency
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.
■
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/MICROWIRE
TM
Compatible Serial I/O
■
16-Bit Upgrade to 12-Bit LTC1285/LTC1288
■
Pin Compatible with 12-Bit LTC1860L/LTC1861L
■
No Minimum Data Transfer Rate
, LTC and LT are registered trademarks of Linear Technology Corporation.
■
High Speed Data Acquisition
■
Portable or Compact Instrumentation
■
Low Power Battery-Operated Instrumentation
■
Isolated and/or Remote Data Acquisition
1
2
3
4
8
7
6
5
V
REF
IN
+
IN
–
GND
V
CC
SCK
SDO
CONV
LTC1864L
1864 TA01
ANALOG INPUT
0V TO 3V
3V
1µF
SERIAL DATA LINK TO
ASIC, PLD, MPU, DSP
OR SHIFT REGISTERS
MICROWIRE is a trademark of National Semiconductor Corporation.
SAMPLING FREQUENCY (kHz)
0.1
SUPPLY CURRENT (µA)
1
10
100
1000
0.01 1 10 1000
1864L/65L TA02
0.1 100
CONV LOW = 2µs
T
A
= 25°C
V
CC
= 2.7V
2
LTC1864L/LTC1865L
sn18645L 18645Lfs
Operating Temperature Range
LTC1864LC/LTC1865LC/
LTC1864LAC/LTC1865LAC .................... 0°C to 70°C
LTC1864LI/LTC1865LI/
LTC1864LAI/LTC1865LAI ................. –40°C to 85°C
Storage Temperature Range ................. –65°C to 150°C
Lead Temperature (Soldering, 10 sec)................. 300°C
Supply Voltage (V
CC
) ................................................. 7V
Ground Voltage Difference
AGND, DGND LTC1865L MSOP Package ......... ±0.3V
Analog Input ............... (GND – 0.3V) to (V
CC
+ 0.3V)
Digital Input ................................ (GND – 0.3V) to 7V
Digital Output .............. (GND – 0.3V) to (V
CC
+ 0.3V)
Power Dissipation.............................................. 400mW
(Notes 1, 2)
ORDER PART
NUMBER
MS8 PART MARKING
MS PART MARKING
LTJ4
LTC1865LCMS
LTC1865LIMS
LTC1865LACMS
LTC1865LAIMS
ORDER PART
NUMBER
LTC1864LCMS8
LTC1864LIMS8
LTC1864LACMS8
LTC1864LAIMS8
LTC7
T
JMAX
= 150°C, θ
JA
= 210°C/W
T
JMAX
= 150°C, θ
JA
= 210°C/W
1
2
3
4
V
REF
IN
+
IN¯
GND
8
7
6
5
V
CC
SCK
SDO
CONV
TOP VIEW
MS8 PACKAGE
8-LEAD PLASTIC MSOP
ABSOLUTE AXI U RATI GS
WWWU
PACKAGE/ORDER I FOR ATIO
UU
W
ORDER PART
NUMBER
S8 PART MARKING
S8 PART MARKING
1864L
1864LI
LTC1864LCS8
LTC1864LIS8
LTC1864LACS8
LTC1864LAIS8
ORDER PART
NUMBER
T
JMAX
= 150°C, θ
JA
= 175°C/W
1
2
3
4
8
7
6
5
TOP VIEW
S8 PACKAGE
8-LEAD PLASTIC SO
V
REF
IN
+
IN
–
GND
V
CC
SCK
SDO
CONV
1864LA
864LAI
1865L
1865LI
LTC1865LCS8
LTC1865LIS8
LTC1865LACS8
LTC1865LAIS8
1865LA
865LAI
1
2
3
4
8
7
6
5
TOP VIEW
S8 PACKAGE
8-LEAD PLASTIC SO
CONV
CH0
CH1
GND
V
CC
SCK
SDO
SDI
T
JMAX
= 150°C, θ
JA
= 175°C/W
1
2
3
4
5
CONV
CH0
CH1
AGND
DGND
10
9
8
7
6
V
REF
V
CC
SCK
SDO
SDI
TOP VIEW
MS PACKAGE
10-LEAD PLASTIC MSOP
● LTC1864L/LTC1865L LTC1864LA/LTC1865LA
PARAMETER CONDITIONS MIN TYP MAX MIN TYP MAX UNITS
Resolution ● 16 16 Bits
No Missing Codes Resolution ● 14 15 Bits
INL (Note 3) ● ±8 ±6 LSB
Transition Noise 2 2 LSB
RMS
Gain Error ● ±20 ±20 mV
CO VERTER A D ULTIPLEXER CHARACTERISTICS
U
W
U
Consult LTC Marketing for parts specified with wider operating temperature ranges.
The ● denotes specifications which apply over the full operating temperature range, otherwise specifications are T
A
= 25°C.
V
CC
= 2.7V, V
REF
= 2.5V, f
SCK
= f
SCK(MAX)
as defined in Recommended Operating Conditions, unless otherwise noted.
3
LTC1864L/LTC1865L
sn18645L 18645Lfs
LTC1864L/LTC1865L
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
SNR Signal-to-Noise Ratio 82 dB
S/(N + D) Signal-to-Noise Plus Distortion Ratio 1kHz Input Signal 82 dB
THD Total Hamonic Distortion Up to 5th Harmonic 1kHz Input Signal 92 dB
Full Power Bandwidth 10 MHz
Full Linear Bandwidth S/(N + D) ≥ 75dB 20 kHz
PARAMETER CONDITIONS MIN TYP MAX MIN TYP MAX UNITS
Offset Error ● ±2 ±5 ±2 ±5mV
Input Differential Voltage V
IN
= IN
+
– IN
–
● 0V
REF
0V
REF
V
Range
Absolute Input Range IN
+
Input – 0.05 V
CC
+ 0.05 – 0.05 V
CC
+ 0.05 V
IN
–
Input – 0.05 V
CC
/2 – 0.05 V
CC
/2 V
V
REF
Input Range LTC1864L SO-8 and MSOP, LTC1865L MSOP 1 V
CC
1V
CC
V
Analog Input Leakage Current (Note 4) ● ±1 ±1 µA
C
IN
Input Capacitance In Sample Mode 12 12 pF
During Conversion 5 5 pF
DY A IC ACCURACY
U
W
DIGITAL A D DC ELECTRICAL CHARACTERISTICS
U
The ● denotes specifications which apply over the full operating temperature range, otherwise specifications are T
A
= 25°C.
V
CC
= 2.7V, V
REF
= 2.5V, f
SCK
= f
SCK(MAX)
as defined in Recommended Operating Conditions, unless otherwise noted.
CO VERTER A D ULTIPLEXER CHARACTERISTICS
U
W
U
T
A
= 25°C. V
CC
= 3V, V
REF
= 3V, f
SAMPLE
= 150kHz, unless otherwise noted.
LTC1864L/LTC1865L
SYMBOL PARAMETER CONDITION MIN TYP MAX UNITS
V
IH
High Level Input Voltage V
CC
= 3.3V ● 1.9 V
V
IL
Low Level Input Voltage V
CC
= 2.7V ● 0.45 V
I
IH
High Level Input Current V
IN
= V
CC
● 2.5 µA
I
IL
Low Level Input Current V
IN
= 0V ● –2.5 µA
V
OH
High Level Output Voltage V
CC
= 2.7V, I
O
= 10µA ● 2.3 2.6 V
V
CC
= 2.7V, I
O
= 360µA ● 2.1 2.45 V
V
OL
Low Level Output Voltage V
CC
= 2.7V, I
O
= 400µA ● 0.3 V
I
OZ
Hi-Z Output Leakage CONV = V
CC
● ±3 µA
I
SOURCE
Output Source Current V
OUT
= 0V –6.5 mA
I
SINK
Output Sink Current V
OUT
= V
CC
6.5 mA
I
REF
Reference Current (LTC1864L SO-8 and CONV = V
CC
● 0.001 3 µA
MSOP, LTC1865L MSOP) f
SMPL
= f
SMPL(MAX)
● 0.01 0.1 mA
I
CC
Supply Current CONV = V
CC
After Conversion ● 0.5 10 µA
f
SMPL
= f
SMPL(MAX)
● 0.45 1.0 mA
P
D
Power Dissipation f
SMPL
= f
SMPL(MAX)
1.22 mW
LTC1864L/LTC1865L LTC1864LA/LTC1865LA
The ● denotes specifications which apply
over the full operating temperature range, otherwise specifications are T
A
= 25°C. V
CC
= 2.7V, V
REF
= 2.5V, unless otherwise noted.
P1-P3P4-P6P7-P9P10-P12P13-P15P16-P16

LTC1864LAIS8#TRPBF

Mfr. #:
Buy LTC1864LAIS8#TRPBF
Manufacturer:
Analog Devices Inc.
Description:
Analog to Digital Converters - ADC 16-bit, 3V, 150ksps ADC
Lifecycle:
New from this manufacturer.
Delivery:
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