ADS7833N 10-Channel 12-Bit Data Acquisition System | Texas Instruments
MPN： ADS7833N ✓ 啟用中ADS7833N 概覽
An analog-to-digital converter, or ADC, converts continuous analog voltages into digital values for measurement, control, monitoring, and instrumentation systems. The ADS7833N belongs to the broader data acquisition and signal-processing hierarchy, combining analog input multiplexing, conversion, and digital data handling in one device. Its 10-channel architecture is designed for systems that need several analog signals to be measured in a coordinated acquisition sequence.
The device includes three simultaneous-sampled channels and three synchronized 12-bit ADCs according to the manufacturer datasheet summary. Simultaneous sampling is valuable when phase relationships between signals must be preserved, while the remaining channels are handled through the device’s multiplexed input architecture. Digitally selectable input ranges and fully differential inputs support flexible signal conditioning for industrial and scientific instrumentation.
The ADS7833N uses ±5 V power supplies and provides serial digital input/output interfaces. These characteristics make it suitable for multichannel measurement systems, process-control equipment, laboratory instrumentation, industrial data loggers, and sensor-interface designs where multiple analog signals must be converted with consistent timing and compact circuitry. The 68-pin PLCC package provides the physical footprint identified for the ADS7833N in the product listing.
Engineers should pay close attention to input range, reference accuracy, channel sequencing, sampling time, digital interface timing, and analog grounding when laying out a board. Because the input network is fully differential, source impedance, common-mode voltage, and input filtering must be evaluated together. Use the manufacturer datasheet for the complete pin-description table, recommended application circuit, electrical limits, and timing requirements.
This product page combines the ADS7833N core specifications, application guidance, package information, and practical design considerations for engineers evaluating a 10-channel, 12-bit acquisition system.
直接替換替代品，適用於 ADS7833N — 相同封裝，腳位對腳位相容。需重新設計 PCB 的不同封裝零件不列入。
此產品無可直接替換的替代品。
申請替代品ADS7833N 最大額定值與電氣特性
| Product Type | 10-channel, 12-bit data acquisition system |
| 解析度 | 12 bits |
| Total Input Channels | 10 channels |
| Simultaneous-Sampled Channels | 3 channels |
| Synchronized ADCs | 3 synchronized 12-bit ADCs |
| Throughput Rate | 6.6 us |
| Input Architecture | Fully differential multiplexed inputs |
| Input Range Selection | Digitally selectable input ranges |
| Power Supply | ±5 V |
| Digital Interface | Serial digital input/output |
| 封裝 | 68-pin PLCC, 24.23 x 24.23 mm |
| 安裝類型 | Surface mount |
| Operating Temperature Minimum | -40 C |
| Temperature Grade | Industrial |
| Conversion Architecture | Multiplexed and simultaneous-sampling ADC system |
| Input Differential Capability | Fully differential |
| Number of Terminals | 68 terminals |
ADS7833N 68-pin plcc, 24.23 x 24.23 mm 腳位配置指南
ADS7833N（68-pin plcc, 24.23 x 24.23 mm 封裝）的腳位配置。 此類比元件具有輸入、輸出與電源腳位。偏移歸零、補償與致能腳位配置請參閱製造商資料表。適用於訊號調理與放大器電路。
無詳細腳位定義資料： ADS7833N.
請參閱 資料表 以查看完整腳位配置。
典型應用
ADS7833N 適用於 6 應用s: Industrial Process Monitoring, Laboratory Instrumentation, Motor and Power System Analysis, Factory Test Equipment, Data Logging and Environmental Monitoring, Audio and Vibration Analysis.
Industrial Process Monitoring
The ADS7833N fits industrial process monitoring because it combines 10 input channels with 12-bit conversion resolution and a 6.6 us throughput rate. The three simultaneous-sampled channels and three synchronized ADCs support measurements where timing relationships between related sensors must be preserved. Fully differential multiplexed inputs are useful when conditioning pressure, temperature, and level signals with instrumentation amplifiers. The ±5 V supply arrangement supports conventional analog signal-chain designs, while serial digital input/output provides a compact connection to a controller or logger. Design the front end to maintain the required common-mode range and source impedance at every channel.
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Laboratory Instrumentation
For laboratory instrumentation, the ADS7833N provides a practical combination of 10 channels, 12-bit resolution, and coordinated sampling. Three simultaneous-sampled channels allow selected probes or reference signals to be observed without acquisition-time skew, while the synchronized ADC arrangement supports repeatable measurements. The fully differential input architecture helps reject common-mode noise when the source is balanced. A serial interface reduces the number of interconnects compared with a parallel ADC. Use the manufacturer application circuit as a starting point for reference, input-filter, and grounding arrangements, and validate channel settling time when switching multiplexed inputs.
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Motor and Power System Analysis
The ADS7833N can support motor and power-system analysis where several current, voltage, or position-related signals must be measured together. Three simultaneous-sampled channels are particularly useful for phase-current and phase-voltage relationships because the selected signals are captured together. The remaining channels extend the system to auxiliary measurements such as DC-bus voltage, temperature, or position. A 6.6 us throughput rate supports rapid acquisition, while 12-bit resolution provides 4096 digital codes for each measured level. The input network must tolerate the converter’s differential input requirements, so protect high-energy nodes and provide attenuation before the analog pins.
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Factory Test Equipment
The ADS7833N is suitable for factory test equipment that evaluates several analog nodes on an assembly or module. Its 10-channel input count allows a single converter to inspect multiple rails or sensor outputs, while three simultaneous-sampled channels support comparative measurements across related parts. Digitally selectable input ranges improve flexibility when different products in a test family use different signal scales. Serial digital control and data connections are advantageous in compact automated test fixtures. Before programming a test sequence, confirm settling behavior for multiplexed channels and maintain consistent reference and analog-ground layouts to preserve measurement repeatability.
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Data Logging and Environmental Monitoring
The ADS7833N fits multichannel environmental and condition-monitoring systems that combine temperature, humidity, pressure, vibration, and other slow or moderate-bandwidth signals. Ten channels reduce the number of separate converters required, while the 12-bit ADCs provide sufficient resolution for many sensor and telemetry applications. The three simultaneous-sampled channels can preserve timing relationships for synchronized environmental or vibration probes. Differential inputs support balanced sensor interfaces and improve noise immunity. For remote battery-powered systems, evaluate overall power consumption, conversion duty cycle, and input leakage before selecting the final architecture.
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Audio and Vibration Analysis
The ADS7833N can be applied to synchronized audio or vibration analysis when multiple transducers feed a central acquisition system. Three simultaneous-sampled channels help preserve phase information across selected sensor channels, an important factor in vibration diagnostics and stereo or multi-axis measurements. The 12-bit resolution and 6.6 us throughput rate are appropriate for many measurement-bandwidth requirements. Fully differential inputs can simplify balanced sensor connections and improve common-mode rejection. Use anti-alias filtering, controlled source impedances, and careful grounding around the converter; otherwise channel-to-channel differences can appear as measurement errors rather than sensor behavior.
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推薦產品摘要
工程參考資料，適用於 ADS7833N — 比較、設計指引及合規資訊。
選型指南
與替代品比較
| 參數 | 本產品 |
|---|---|
| Product Type | 10-channel, 12-bit data acquisition system |
| Resolution | 12 bits |
| Input Channels | 10 channels |
| Simultaneous-Sampled Channels | 3 channels |
| ADC Count | 3 synchronized 12-bit ADCs |
| Throughput Rate | 6.6 us |
| Input Architecture | Fully differential multiplexed inputs |
| Input Range Selection | Digitally selectable input ranges |
| Power Supply | ±5 V |
| Package | 68-pin PLCC, 24.23 x 24.23 mm |
| Brand | Texas Instruments |
主要差異化特點
- Combines multichannel acquisition and synchronized conversion in one device (對比Generic single-channel ADC)
- Preserves timing relationships on selected channels (對比Sequentially multiplexed single-ADC design)
- Supports flexible signal conditioning with differential inputs (對比Single-ended input architecture)
設計說明
Place the analog input, reference, and ground components close to the ADS7833N pins, and route high-speed digital control and serial data away from sensitive input traces. Use a continuous ground plane where practical, avoid splitting analog and digital return paths beneath the converter, and place decoupling capacitors at the ±5 V power pins. The 68-pin PLCC footprint should be checked against the manufacturer land pattern and pin-1 orientation before layout release.
Treat each multiplexed input as a settling network rather than an ideal voltage source. Match source impedance across the ±5 V input range, verify the acquisition time required for the selected channel, and include anti-alias filtering ahead of the converter. For simultaneously sampled channels, keep sensor paths and filtering symmetrical so timing and amplitude differences are not mistaken for real signal relationships.
Use separate routing for the positive and negative supplies only after confirming the complete power architecture in the manufacturer application circuit. Keep the analog supply and reference distribution quiet, place local high-frequency bypass capacitors at the relevant pins, and provide adequate return paths for both rails. ±5 V operation requires a bipolar supply arrangement unless the surrounding signal chain provides an appropriate local conversion solution.
Do not assume that all 10 channels have identical acquisition timing. The device combines simultaneous-sampled channels with multiplexed inputs, so channel switching, conversion time, and settling behavior must be included in the measurement sequence. Also avoid treating the product family name ADS7833 as proof of package compatibility; the ADS7833N requires the specific 68-pin PLCC footprint and exact pin assignment.
合規資訊
The industrial temperature grade is identified for the ADS7833N. Specific RoHS, REACH, lead-free, halogen-free, and conflict-minerals declarations are not stated in the cited product information.
