--- 产品详情 ---
Resolution (Bits) | 16 |
Number of input channels | 8 |
Sample rate (Max) (kSPS) | 52 |
Interface type | SPI |
Architecture | Delta-Sigma |
Input type | Differential, Single-Ended |
Multi-channel configuration | Simultaneous Sampling |
Rating | Catalog |
Reference mode | Ext |
Input range (Max) (V) | 5.25 |
Input range (Min) (V) | 0 |
Features | Daisy-Chainable |
Operating temperature range (C) | -40 to 85 |
Power consumption (Typ) (mW) | 245 |
Analog voltage AVDD (Min) (V) | 4.75 |
SNR (dB) | 97 |
Analog voltage AVDD (Max) (V) | 5.25 |
INL (Max) (+/-LSB) | 1 |
Digital supply (Min) (V) | 1.65 |
Digital supply (Max) (V) | 1.95 |
- Simultaneously Sample Four/Eight Channels
- Selectable Operating Modes:
High-Speed: 52kSPS Data Rate, 31mW/ch
Low-Power: 10kSPS Data Rate, 7mW/ch - AC Performance:
25kHz Bandwidth
97dB SNR
-105dB THD - DC Performance:
2μV/°C Offset Drift
2ppm/°C Gain Drift - Digital Filter:
Linear Phase Response
Passband Ripple: ±0.005dB
Stop Band Attenuation: 100dB - Selectable SPI or Frame Sync Serial Interface
- Simple Pin-Driven Control
- Low Sampling Aperture Error
- Specified from -40°C to +105°C
- Analog Supply: 5V
- I/O Supply: 1.8V to 3.3V
- Digital Core Supply: 1.8V
- APPLICATIONS
- 3-Phase Power Monitors
- Defibrillators and ECG Monitors
- Coriolis Flow Meters
- Vibration/Modal Analysis
PowerPAD is a trademark of Texas Instruments.
SPI is a trademark of Motorola, Inc.
The ADS1174 (quad) and ADS1178 (octal) are multiple delta-sigma (ΔΣ) analog-to-digital converters (ADCs) with data rates up to 52k samples-per-second (SPS), which allow synchronous sampling of four and eight channels. These devices use identical packages, and are also compatible with the high-performance 24-bit ADS1274 and ADS1278, permitting drop-in upgrades.
The delta-sigma architecture offers near ideal 16-bit ac performance (97dB SNR, -105dB THD, 1LSB linearity) combined with 0.005dB passband ripple and linear phase response.
The high-order, chopper-stabilized modulator achieves very low drift (2μV/°C offset, 2ppm/°C gain) and low noise (1LSBPP). The on-chip finite impulse response (FIR) filter provides a usable signal bandwidth up to 90% of the Nyquist rate with 100dB of stop band attenuation while suppressing modulator and signal out-of-band noise.
Two operating modes allow for optimization of speed and power: High-speed mode (31mW/Ch at 52kSPS), and Low-power mode (7mW/Ch at 10kSPS).
A SYNC input control pin allows the device conversions to be started and synchronized to an external event. SPI and Frame-Sync serial interfaces are supported. The device is fully specified over the extended industrial range (40°C to +105°C) and is available in an HTQFP-64 PowerPAD package.
为你推荐
-
TI数字多路复用器和编码器SN54HC1512022-12-23 15:12
-
TI数字多路复用器和编码器SN54LS1532022-12-23 15:12
-
TI数字多路复用器和编码器CD54HC1472022-12-23 15:12
-
TI数字多路复用器和编码器CY74FCT2257T2022-12-23 15:12
-
TI数字多路复用器和编码器SN74LVC257A2022-12-23 15:12
-
TI数字多路复用器和编码器SN74LVC157A2022-12-23 15:12
-
TI数字多路复用器和编码器SN74ALS258A2022-12-23 15:12
-
TI数字多路复用器和编码器SN74ALS257A2022-12-23 15:12
-
TI数字多路复用器和编码器SN74ALS157A2022-12-23 15:12
-
TI数字多路复用器和编码器SN74AHCT1582022-12-23 15:12
-
如何利用运算放大器设计振荡电路?2023-08-09 08:08
-
【PCB设计必备】31条布线技巧2023-08-03 08:09
-
电动汽车直流快充方案设计【含参考设计】2023-08-03 08:08
-
Buck电路的原理及器件选型指南2023-07-31 22:28
-
100W USB PD 3.0电源2023-07-31 22:27
-
千万不要忽略PCB设计中线宽线距的重要性2023-07-31 22:27
-
基于STM32的300W无刷直流电机驱动方案2023-07-06 10:02
-
上新啦!开发板仅需9.9元!2023-06-21 17:43
-
参考设计 | 2KW AC/DC数字电源方案2023-06-21 17:43
-
千万不能小瞧的PCB半孔板2023-06-21 17:34