LTC2335-16 ADC Datasheet

LTC2335-16 Datasheet PDF, Equivalent


Part Number

LTC2335-16

Description

ADC

Manufacture

Linear

Total Page 30 Pages
Datasheet
Download LTC2335-16 Datasheet


LTC2335-16
Features
LTC2335-16
16-Bit, 1Msps 8-Channel
Differential ±10.24V Input SoftSpan ADC
with Wide Input Common Mode Range
Description
nn 1Msps Throughput
nn ±1LSB INL (Maximum)
nn Guaranteed 16-Bit, No Missing Codes
nn Differential, Wide Common Mode Range Inputs
nn 8-Channel Multiplexer with SoftSpan Input Ranges:
±10.24V, 0V to 10.24V, ±5.12V, 0V to 5.12V
±12.5V, 0V to 12.5V, ±6.25V, 0V to 6.25V
nn 94.4dB Single-Conversion SNR (Typical)
nn −109dB THD (Typical) at fIN = 2kHz
nn 118dB CMRR, 125dB Active Crosstalk (Typical)
nn Rail-to-Rail Input Overdrive Tolerance
nn Programmable Sequencer with No-Latency Control
nn Guaranteed Operation to 125°C
nn Integrated Reference and Buffer (4.096V)
nn SPI CMOS (1.8V to 5V) and LVDS Serial I/O
nn No Pipeline Delay, No Cycle Latency
nn 180mW Power Dissipation (Typical)
nn 48-Lead (7mm × 7mm) LQFP Package
Applications
nn Programmable Logic Controllers
nn Industrial Process Control
nn Power Line Monitoring
nn Test and Measurement
The LTC®2335-16 is a 16-bit, low noise 8-channel multi-
plexed successive approximation register (SAR) ADC with
differential, wide common mode range inputs. Operating
from a 5V low voltage supply, flexible high voltage supplies,
and using the internal reference and buffer, this SoftSpanTM
ADC can be configured on a conversion-by-conversion
basis to accept ±10.24V, 0V to 10.24V, ±5.12V, or 0V to
5.12V signals on any channel. Alternately, the ADC may
be programmed to cycle through a sequence of channels
and ranges without further user intervention.
The wide input common mode range and 118dB CMRR of
the LTC2335-16 analog inputs allow the ADC to directly
digitize a variety of signals, simplifying signal chain de-
sign. This input signal flexibility, combined with ±1LSB
INL, no missing codes at 16 bits, and 94.4dB SNR, makes
the LTC2335-16 an ideal choice for many high voltage
applications requiring wide dynamic range.
The LTC2335-16 supports pin-selectable SPI CMOS (1.8V
to 5V) and LVDS serial interfaces.
L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks and
SoftSpan is a trademark of Linear Technology Corporation. All other trademarks are the property
of their respective owners. Protected by U.S. Patents, including 7705765, 7961132, 8319673.
Other Patents pending.
Typical Application
ARBITRARY
+10V
0V
–10V
FULLY
DIFFERENTIAL
+5V
0V
–5V
TRUE BIPOLAR
UNIPOLAR
+10V
+10V
0V 0V
–10V
–10V
DIFFERENTIAL INPUTS IN+/IN– WITH
WIDE INPUT COMMON MODE RANGE
15V 5V
0.1µF
0.1µF
2.2µF
1.8V TO 5V
0.1µF
IINN00+– VCC
MUX
VDD VDDLBYP
LTC2335-16
CMOS OR LVDS
I/O INTERFACE
OVDD LVDS/CMOS
PD
16-BIT
SAMPLING
ADC
SDO
SCKO
SCKI
SDI
CS
BUSY
CNV
IINN77+–
VEE REFBUF REFIN GND
0.1µF
–15V
47µF 0.1µF
233516 TA01a
SAMPLE
CLOCK
For more information www.linear.com/LTC2335-16
Integral Nonlinearity vs
Output Code and Channel
1.00
0.75
TRUE BIPOLAR D±R1I0V.E24(IVNRA=N0GVE)
ALL CHANNELS
0.50
0.25
0
–0.25
–0.50
–0.75
–1.00
–32768
–16384
0
16384 32768
OUTPUT CODE
233516 TA01b
233516f
1

LTC2335-16
LTC2335-16
Absolute Maximum Ratings
(Notes 1, 2)
Supply Voltage (VCC)......................–0.3V to (VEE + 40V)
Supply Voltage (VEE)................................. –17.4V to 0.3V
Supply Voltage Difference (VCC – VEE).......................40V
Supply Voltage (VDD)...................................................6V
Supply Voltage (OVDD).................................................6V
Internal Regulated Supply Bypass (VDDLBYP).... (Note 3)
Analog Input Voltage
IN0+ to IN7+,
IN0to IN7(Note 4).......... (VEE – 0.3V) to (VCC + 0.3V)
REFIN..................................................... –0.3V to 2.8V
REFBUF, CNV (Note 5).............. –0.3V to (VDD + 0.3V)
Digital Input Voltage (Note 5)...... –0.3V to (OVDD + 0.3V)
Digital Output Voltage (Note 5)... –0.3V to (OVDD + 0.3V)
Power Dissipation............................................... 500mW
Operating Temperature Range
LTC2335C................................................. 0°C to 70°C
LTC2335I..............................................–40°C to 85°C
LTC2335H........................................... –40°C to 125°C
Storage Temperature Range................... –65°C to 150°C
Pin Configuration
TOP VIEW
IIIIIIIIIIIINNNNNNNNNNNN654433221651–+–+–+–+–+–+
1
2
3
4
5
6
7
8
9
10
11
12
LX PACKAGE
48-LEAD (7mm × 7mm) PLASTIC LQFP
TJMAX = 150°C, θJA = 53°C/W
36
35
34
33
32
SGSSSCDDCNKKOODOO–++–//SSCDKOO
31 OVDD
30
29
28
27
26
GSSSSCCDDNKKIID–+II–+/SCKI
25 GND
Order Information
LEAD FREE FINISH
TRAY
PART MARKING*
PACKAGE DESCRIPTION
TEMPERATURE RANGE
LTC2335CLX-16#PBF
LTC2335CLX-16#PBF LTC2335LX-16
48-Lead (7mm × 7mm) Plastic LQFP
0°C to 70°C
LTC2335ILX-16#PBF
LTC2335ILX-16#PBF
LTC2335LX-16
48-Lead (7mm × 7mm) Plastic LQFP
–40°C to 85°C
LTC2335HLX-16#PBF
LTC2335HLX-16#PBF LTC2335LX-16
48-Lead (7mm × 7mm) Plastic LQFP
–40°C to 125°C
Consult LTC Marketing for parts specified with wider operating temperature ranges. *The temperature grade is identified by a label on the shipping container.
For more information on lead free part marking, go to: http://www.linear.com/leadfree/
233516f
2 For more information www.linear.com/LTC2335-16


Features Features LTC2335-16 16-Bit, 1Msps 8-Cha nnel Differential ±10.24V Input SoftSp an ADC with Wide Input Common Mode Rang e Description nn 1Msps Throughput nn 1LSB INL (Maximum) nn Guaranteed 16-Bi t, No Missing Codes nn Differential, Wi de Common Mode Range Inputs nn 8-Channe l Multiplexer with SoftSpan Input Range s: ±10.24V, 0V to 10.24V, ±5.12V, 0 V to 5.12V ±12.5V, 0V to 12.5V, ±6. 25V, 0V to 6.25V nn 94.4dB Single-Conve rsion SNR (Typical) nn −109dB THD (Ty pical) at fIN = 2kHz nn 118dB CMRR, 125 dB Active Crosstalk (Typical) nn Rail-t o-Rail Input Overdrive Tolerance nn Pro grammable Sequencer with No-Latency Con trol nn Guaranteed Operation to 125°C nn Integrated Reference and Buffer (4.0 96V) nn SPI CMOS (1.8V to 5V) and LVDS Serial I/O nn No Pipeline Delay, No Cyc le Latency nn 180mW Power Dissipation ( Typical) nn 48-Lead (7mm × 7mm) LQFP P ackage Applications nn Programmable Log ic Controllers nn Industrial Process Co ntrol nn Power Line Monitoring nn Test and Measurement The LTC®2335-16 i.
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