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ISL26323 Datasheet

Low-power ADC

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DATASHEET
ISL26320, ISL26321, ISL26322, ISL26323, ISL26324, ISL26325, ISL26329
12-Bit, 250kSPS Low-Power ADCs with Single-Ended and Differential Inputs and Multiple Input
Channels
FN8273
Rev 1.00
September 5, 2013
The ISL26320, ISL26321, ISL26322, ISL26323, ISL26324,
ISL26325 and ISL26329 family of sampling SAR-type ADCs
feature excellent linearity over supply and temperature
variations, and offer versions with 1-, 2-, 4- and 8-channel
single-ended inputs, and 1-, 2- and 4-channel differential
inputs. A proprietary input multiplexer and combination buffer
amplifier reduces the input drive requirements, resulting in
lower cost and reduced board space. Specified measurement
accuracy is maintained with input signals up to VDD.
Members of the The ISL26320, ISL26321, ISL26322,
ISL26323, ISL26324, ISL26325 and ISL26329 family of
Low-Power ADCs offer pinout intercompatibility, differing only
in the analog inputs, to support quick replication of proven
layouts across multiple design platforms.
The serial digital interface is SPI compatible and is easily
interfaced to popular FPGAs and microcontrollers. Power
consumption is limited to 15mW at a sampling rate of
250kSPS, and an operating current of just 8µA typical
between conversions, when configured for Auto Power-down
mode.
The ISL26320, ISL26321, ISL26322, ISL26323, ISL26324,
ISL26325 and ISL26329 feature up to 5kV Human Body
Model ESD survivability and are available in the popular SOIC
and TSSOP packages. Performance is specified for operation
over the full industrial temperature range (-40°C to +125°C).
Features
• Pin-compatible family allows easy design upgrades
• Excellent differential non-linearity (0.7LSB max)
• Low THD: -86dB (typ)
• Simple SPI-compatible serial digital interface
• Low 3mA operating current
• Power-down current between conversions 8µA (typ)
• +5.25V to +2.7V supply
• Excellent ESD survivability: 5kV HBM, 350V MM, 2kV CDM
Applications
• Industrial process control
• Energy measurement
• Multichannel data acquisition systems
• Pressure sensors
• Flow controllers
VDD
VREF
ANALOG INPUTS
DIFFERENTIAL/
SINGLE-ENDED
MUX
BUFFER
ADC
SPI
OSC
POR
GND
FIGURE 1. FUNCTIONAL BLOCK DIAGRAM
CNV
SCLK
SDO
SDI
FN8273 Rev 1.00
September 5, 2013
Page 1 of 23


Renesas Electronics Components Datasheet

ISL26323 Datasheet

Low-power ADC

No Preview Available !

ISL26320, ISL26321, ISL26322, ISL26323, ISL26324, ISL26325, ISL26329
Application Block Diagram
I2C Bus
ANALOG SIGNAL INPUT MODULEs
Pressure/Strain Gage Sensor
VREF
DCP
Precision
Amps
Gain
Amplifiers
+V
Precision
Amps
-V
Active
Filters
+V
Precision
Amps
-V
Temperature Sensor
VREF
DCP
Thermistor
+V
Precision
Amps
-V
Thermocouple
ISO-Thermal
Block
+V
Precision
Amps
-V
+V
Active
Precision Filters
Amps
-V
+V Active
Filters
Precision
Amps
-V
Differential
Pressure
Transducer
w/¥
Extractor
Iout
Flow Sensor
Loop Supply
Gain
Amplifiers
+V
4 -20mA
Vin
Precision
Amps
-V
Active
Filters
+V
Precision
Amps
-V
MUX and ADC
M ADC
U
X
VREF
RS-485
μC
RTC
V
System
Power
V
LDO’s
Switching
Regulator
POWER
Voltage
Supervisor &
Sequencers
Core &
I/O Power
Switching
Controller
Actuators
Motors +V
Control loops
Precision
Amps
-V
Buffer, Filters,
Span Drivers
+V
M
Precision
Amps
U
X
-V
DAC
VREF
ANALOG SIGNAL OUTPUT MODULE
+V
-V
RS-485
RTC RS-232
Master
μC
LDO Switching
Regulators
High Voltage Input Rail ~24V
Single Ended
Controller
Isolator
Isolated Power
Pin-Compatible Family
MODEL
ISL26310
ISL26311
ISL26312
ISL26313
ISL26314
ISL26315
ISL26319
ISL26320
ISL26321
ISL26322
ISL26323
ISL26324
ISL26325
ISL26329
RESOLUTION
(Bits)
12
12
12
12
12
12
12
12
12
12
12
12
12
12
SPEED
(kHz)
125
125
125
125
125
125
125
250
250
250
250
250
250
250
ANALOG
INPUT
Differential
Single-Ended
Differential
Single-Ended
Differential
Single-Ended
Single-Ended
Differential
Single-Ended
Differential
Single-Ended
Differential
Single-Ended
Single-Ended
INPUT
CHANNELS
1
1
2
2
4
4
8
1
1
2
2
4
4
8
FN8273 Rev 1.00
September 5, 2013
Page 2 of 23


Part Number ISL26323
Description Low-power ADC
Maker Renesas
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ISL26323 Datasheet PDF






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