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Linear Technology Electronic Components Datasheet

LTC1852 Datasheet

Sampling ADCs

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LTC1852 pdf
LTC1852/LTC1853
8-Channel, 10-Bit/12-Bit,
400ksps, Low Power, Sampling ADCs
FEATURES
n Flexible 8-Channel Multiplexer
Single-Ended or Differential Inputs
Two Gain Ranges
Unipolar or Bipolar Operation
n Scan Mode and Programmable Sequencer
Eliminate Configuration Software Overhead
wwwn.DaLtoawShPeeotw4Ue.rc:o3mmW at 250ksps
n 2.7V to 5.5V Supply Range
n Internal or External Reference Operation
n Parallel Output Includes MUX Address
n Nap and Sleep Shutdown Modes
n Pin Compatible up-grade 1.25Msps 10-Bit LTC1850
and 12-Bit LTC1851
APPLICATIONS
n High Speed Data Acquisition
n Test and Measurement
n Imaging Systems
n Telecommunications
n Industrial Process Control
n Spectrum Analysis
DESCRIPTION
The 10-bit LTC®1852 and 12-bit LTC1853 are complete
8-channel data acquisition systems. They include a flexible
8-channel multiplexer, a 400ksps successive approxima-
tion analog-to-digital converter, an internal reference and a
parallel output interface. The multiplexer can be configured
for single-ended or differential inputs, two gain ranges and
unipolar or bipolar operation. The ADCs have a scan mode
that will repeatedly cycle through all 8 multiplexer channels
and can also be programmed to sequence through up to
16 addresses and configurations. The sequence can also
be read back from internal memory.
The reference and buffer amplifier provide pin strappable
ranges of 4.096V, 2.5V and 2.048V. The parallel output
includes the 10-bit or 12-bit conversion result plus the
4-bit multiplexer address. The digital outputs are pow-
ered from a separate supply allowing for easy interface
to 3V digital logic. Typical power consumption is 10mW
at 400ksps from a single 5V supply and 3mW at 250ksps
from a single 3V supply.
, LT, LTC and LTM are registered trademarks of Linear Technology Corporation.
BLOCK DIAGRAM
CH0
CH1
CH2
CH3
CH4
CH5
CH6
CH7
COM
REFOUT
8-CHANNEL
MULTIPLEXER
2.5V
REFERENCE
LTC1853
INTERNAL
CLOCK
+ 12-BIT
SAMPLING
ADC
REFIN
REF AMP
REFCOMP
CONTROL LOGIC
AND
PROGRAMMABLE
SEQUENCER
DATA
LATCHES
OUTPUT
DRIVERS
M1
SHDN
CS
CONVST
RD
WR
DIFF
A2
A1
A0
UNI/BIP
PGA
M0
OVDD
BUSY
DIFFOUT/S6
A2OUT/S5
A1OUT/S4
A0OUT/S3
D11/S2
D10/S1
D9/S0
D8
D7
D6
D5
D4
D3
D2
D1
D0
OGND
18523 BD
Integral Linearity
1.0
0.5
0
–0.5
–1.0
0
512 1024 1536 2048 2560 3072 3584 4096
CODE
1852 F01
18523fa
1


Linear Technology Electronic Components Datasheet

LTC1852 Datasheet

Sampling ADCs

No Preview Available !

LTC1852 pdf
LTC1852/LTC1853
ABSOLUTE MAXIMUM RATINGS OVDD = VDD (Note 1, 2)
Supply Voltage (VDD) ..................................................6V
Analog Input Voltage (Note 3) ..... – 0.3V to (VDD + 0.3V)
Digital Input Voltage (Note 4) .................... –0.3V to 10V
Digital Output Voltage ..................–0.3V to (VDD + 0.3V)
Power Dissipation ...............................................500mW
Ambient Operating Temperature Range
LTC1852C/LTC1853C .............................. 0°C to 70°C
LTC1852I/LTC1853I............................. –40°C to 85°C
Storage Temperature Range...................–65°C to 150°C
Lead Temperature (Soldering, 10 sec) ................. 300°C
PIN CONFIGURATION
LTC1852
www.DataSheet4U.com
CH0 1
CH1 2
CH2 3
CH3 4
CH4 5
CH5 6
CH6 7
CH7 8
COM 9
REFOUT 10
REFIN 11
REFCOMP 12
GND 13
VDD 14
VDD 15
GND 16
DIFFOUT/S6 17
A2OUT/S5 18
A1OUT/S4 19
A0OUT/S3 20
D9/S2 21
D8/S1 22
D7/S0 23
D6 24
TOP VIEW
48 M1
47 SHDN
46 CS
45 CONVST
44 RD
43 WR
42 DIFF
41 A2
40 A1
39 A0
38 UNI/BIP
37 PGA
36 M0
35 OVDD
34 OGND
33 BUSY
32 NC
31 NC
30 D0
29 D1
28 D2
27 D3
26 D4
25 D5
FW PACKAGE
48-LEAD PLASTIC TSSOP
TJMAX = 150°C, θJA = 110°C/W
LTC1853
TOP VIEW
CH0 1
CH1 2
CH2 3
CH3 4
CH4 5
CH5 6
CH6 7
CH7 8
COM 9
REFOUT 10
REFIN 11
REFCOMP 12
GND 13
VDD 14
VDD 15
GND 16
DIFFOUT/S6 17
A2OUT/S5 18
A1OUT/S4 19
A0OUT/S3 20
D11/S2 21
D10/S1 22
D9/S0 23
D8 24
48 M1
47 SHDN
46 CS
45 CONVST
44 RD
43 WR
42 DIFF
41 A2
40 A1
39 A0
38 UNI/BIP
37 PGA
36 M0
35 OVDD
34 OGND
33 BUSY
32 D0
31 D1
30 D2
29 D3
28 D4
27 D5
26 D6
25 D7
FW PACKAGE
48-LEAD PLASTIC TSSOP
TJMAX = 150°C, θJA = 110°C/W
ORDER INFORMATION
LEAD FREE FINISH
TAPE AND REEL
PART MARKING
PACKAGE DESCRIPTION
LTC1852CFW#PBF
LTC1852CFW#TRPBF
LTC1852CFW
48-Lead Plastic TSSOP (6.1mm)
LTC1852IFW#PBF
LTC1852IFW#TRPBF
LTC1852IFW
48-Lead Plastic TSSOP (6.1mm)
LTC1853CFW#PBF
LTC1853CFW#TRPBF
LTC1853CFW
48-Lead Plastic TSSOP (6.1mm)
LTC1853IFW#PBF
LTC1853IFW#TRPBF
LTC1853IFW
48-Lead Plastic TSSOP (6.1mm)
Consult LTC Marketing for parts specified with wider operating temperature ranges.
Consult LTC Marketing for information on non-standard lead based finish parts.
For more information on lead free part marking, go to: http://www.linear.com/leadfree/
For more information on tape and reel specifications, go to: http://www.linear.com/tapeandreel/
2
TEMPERATURE RANGE
0°C to 70°C
–40°C to 85°C
0°C to 70°C
–40°C to 85°C
18523fa


Part Number LTC1852
Description Sampling ADCs
Maker Linear Technology
Total Page 24 Pages
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LTC1852 pdf
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