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| 型號： | ISL26134AVZ-T7A |
| 廠商： | Intersil |
| 文件頁數(shù)： | 1/23頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC ADC 24BIT SRL 80SPS 28TSSOP |
| 標準包裝： | 1 |
| 位數(shù)： | 24 |
| 采樣率（每秒）： | 80 |
| 數(shù)據(jù)接口： | 串行 |
| 轉(zhuǎn)換器數(shù)目： | 1 |
| 功率耗散（最大）： | 80mW |
| 電壓電源： | 模擬和數(shù)字 |
| 工作溫度： | -40°C ~ 105°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 28-TSSOP（0.173"，4.40mm 寬） |
| 供應(yīng)商設(shè)備封裝： | 28-TSSOP |
| 包裝： | 標準包裝 |
| 輸入數(shù)目和類型： | 4 個差分，雙極 |
| 其它名稱： | ISL26134AVZ-T7ADKR |
1
Low-Noise 24-bit Delta Sigma ADC
ISL26132, ISL26134
The ISL26132 and ISL26134 are complete analog front ends
for high resolution measurement applications. These 24-bit
Delta-Sigma Analog-to-Digital Converters include a very
low-noise amplifier and are available as either two or four
differential multiplexer inputs. The devices offer the same
pinout as the ADS1232 and ADS1234 devices and are
functionally compatible with these devices. The ISL26132 and
ISL26134 offer improved noise performance at 10Sps and
80Sps conversion rates.
The on-chip low-noise programmable-gain amplifier provides
gains of 1x/2x/64x/128x. The 128x gain setting provides an
input range of ±9.766mVFS when using a 2.5V reference. The
high input impedance allows direct connection of sensors such
as load cell bridges to ensure the specified measurement
accuracy without additional circuitry. The inputs accept signals
100mV outside the supply rails when the device is set for unity
gain.
The Delta-Sigma ADC features a third order modulator
providing up to 21.6-bit noise-free performance.
The device can be operated from an external clock source,
crystal (4.9152MHz typical), or the on-chip oscillator.
The two channel ISL26132 is available in a 24 Ld TSSOP
package and the four channel ISL26134 is available in a 28 Ld
TSSOP package. Both are specified for operation over the
automotive temperature range (-40°C to +105°C).
Features
Up to 21.6 Noise-free bits.
Low Noise Amplifier with Gains of 1x/2x/64x/128x
RMS noise: 10.2nV @ 10Sps (PGA = 128x)
Linearity Error: 0.0002% FS
Simultaneous rejection of 50Hz and 60Hz (@ 10Sps)
Two (ISL26132) or four (ISL26134) channel differential
input multiplexer
On-chip temperature sensor (ISL26132)
Automatic clock source detection
Simple interface to read conversions
+5V Analog, +5 to +2.7V Digital Supplies
Pb-Free (RoHS Compliant)
TSSOP packages: ISL26132, 24 pin; ISL26134, 28 pin
Applications
Weigh Scales
Temperature Monitors and Controls
Industrial Process Control
Pressure Sensors
ADC
PGA
1x/2x/64x/
128x
INTERNAL
CLOCK
SDO/RDY
SCLK
DVDD
AVDD
DGND
AGND
XTALIN/CLOCK
VREF+
EXTERNAL
OSCILLATOR
XTALOUT
VREF-
A0
A1/TEMP
AIN1+
AIN1-
AIN2+
AIN2-
AIN3+
AIN3-
AIN4+
AIN4-
INPUT
MULTIPLEXER
ISL26134
Only
CAP
GAIN1
GAIN0
PWDN
SPEED
DGND
NOTE for A1/TEMP pin: Functions as A1 on ISL26134; Functions as TEMP on ISL26132
FIGURE 1. BLOCK DIAGRAM
September 9, 2011
FN6954.1
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 1-888-468-3774
|Copyright Intersil Americas Inc. 2011. All Rights Reserved
Intersil (and design) is a trademark owned by Intersil Corporation or one of its subsidiaries.
All other trademarks mentioned are the property of their respective owners.
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