AD977AAR - 16-Bit 200 kSPS Serial ADC | Analog Devices
MPN: AD977AAR ✓ सक्रियAD977AAR अवलोकन
An ADC is a semiconductor that converts an analog voltage into a digital number for processing, measurement, or transmission. The AD977AAR belongs to the ADC and data-converter hierarchy, where its 16-bit resolution provides 65,536 nominal code levels. Its serial interface reduces the number of signal connections compared with a parallel converter and is appropriate for systems that transfer converted samples to a controller, DSP, FPGA, or communications equipment.
The AD977AAR provides selectable unipolar and bipolar input ranges, including 0 to 5 V and 0 to 4 V unipolar ranges and 5 V and 3.3 V bipolar ranges. It operates from a single 5 V supply and includes a power-down mode. The manufacturer identifies the AD977AAR as the 200 kSPS member of the AD977 and AD977A family; the AD977 has a 100 kSPS throughput rate. Its low-power design is intended for compact instrumentation and control systems where converter power dissipation must remain controlled.
The converter uses a successive-approximation architecture with an internal sample-and-hold function. External reference and interface circuitry determine the complete analog signal-chain implementation, while the serial output transfers each conversion result to the receiving digital system. The 20-SOIC package provides a conventional surface-mount form factor suitable for industrial and embedded equipment.
Typical applications include process-control instrumentation, data-acquisition systems, industrial measurement equipment, communications receivers, medical monitoring equipment, and embedded control systems. The AD977AAR is especially appropriate when the design requires 16-bit conversion resolution, a 200 kSPS sampling capability, serial output, and operation from a single 5 V supply.
When designing around the AD977AAR, verify the selected input range against the signal source, reference voltage, serial clock arrangement, digital interface levels, and acquisition timing. Confirm that the external front-end can drive the converter input without exceeding the datasheet input limits. Use the manufacturer’s pin-description table and timing diagrams when assigning PCB traces and validating conversion latency.
This page organizes the manufacturer specifications, package information, application guidance, pricing workflow, and replacement considerations for engineers evaluating the AD977AAR in a new or existing data-acquisition design.
के लिए ड्रॉप-इन विकल्प AD977AAR — समान पैकेज, पिन-टू-पिन संगत। PCB रीवर्क आवश्यक करने वाले भिन्न-पैकेज पार्ट्स शामिल नहीं हैं।
इस सीरीज़ के वेरिएंट
समान श्रृंखला के मॉडल जो ड्रॉप-इन संगत हैं AD977AAR (समान फॉर्म फैक्टर और फुटप्रिंट) — इसमें भिन्न Package, Input Type, Power-Down Mode, Supply Voltage, Throughput Rate.
AD977AR
✅ ड्रॉप-इन ⚠️ विनिर्देश असत्यापितकीमत के लिए संपर्क करें
डेटाशीट देखें →AD977ABR
✅ ड्रॉप-इन ⚠️ विनिर्देश असत्यापितकीमत के लिए संपर्क करें
डेटाशीट देखें →AD977AZ
✅ ड्रॉप-इन ⚠️ विनिर्देश असत्यापित📋 संदर्भ विकल्प (कैटलॉग में नहीं)
AD977ARZ
✅ ड्रॉप-इन ⚠️ विनिर्देश असत्यापितकीमत के लिए संपर्क करें
डेटाशीट देखें →AD977AARZ
✅ ड्रॉप-इन ⚠️ विनिर्देश असत्यापित📋 संदर्भ विकल्प (कैटलॉग में नहीं)
AD977AAR Maximum Ratings और Electrical Characteristics
| रेज़ोल्यूशन | 16 bit |
| Throughput Rate | 200 kSPS |
| Converter Architecture | Successive approximation |
| Input Type | Unipolar and bipolar |
| Unipolar Input Range | 0 V to 5 V or 0 V to 4 V |
| Bipolar Input Range | ±5 V or ±3.3 V |
| सप्लाई वोल्टेज | 5 V single supply |
| Power Dissipation | 100 mW maximum |
| Power-Down Mode | 50 uW |
| इंटरफ़ेस | Serial I/O |
| Input Count | 1 input |
| पैकेज | 20-SOIC |
| माउंटिंग प्रकार | Surface mount |
AD977AAR 20-soic पिन कॉन्फ़िगरेशन गाइड
AD977AAR (20-soic पैकेज) के लिए पिन कॉन्फ़िगरेशन। इस एनालॉग कंपोनेंट में इनपुट, आउटपुट और पावर सप्लाई पिन हैं। ऑफ़सेट नल, कम्पनसेशन और एनेबल पिन कॉन्फ़िगरेशन के लिए निर्माता डेटाशीट देखें। सिग्नल कंडीशनिंग और एम्प्लीफ़ायर सर्किट के लिए आदर्श।
इसके लिए कोई विस्तृत pinout data उपलब्ध नहीं: AD977AAR.
देखें डेटाशीट पूर्ण पिन कॉन्फ़िगरेशन के लिए।
सामान्य अनुप्रयोग
AD977AAR के लिए उपयुक्त है 6 अनुप्रयोगs: Industrial Process Measurement, Data-Acquisition Systems, Communications Receivers, Medical Monitoring Equipment, Precision Test and Measurement, Embedded Control and Monitoring.
Industrial Process Measurement
The AD977AAR suits process-monitoring systems that must digitize slowly changing or moderately dynamic sensor signals while retaining 16-bit resolution. Its 200 kSPS throughput provides timing margin for multiplexed analog channels, while the 20-SOIC package simplifies assembly on conventional industrial controller boards. The single 5 V supply requirement simplifies system power planning. Engineers should select the correct unipolar or bipolar input configuration, add suitable analog protection, and verify that the converter’s input bandwidth and settling behavior meet the process-loop requirements.
अनुशंसित
Data-Acquisition Systems
For compact data-acquisition modules, the AD977AAR combines a 16-bit converter with a 200 kSPS sampling rate and serial output. The serial interface limits connector and PCB routing requirements compared with a parallel ADC, making the device suitable for embedded acquisition front ends that feed samples to an MCU, DSP, or FPGA. Its documented maximum dissipation of 100 mW supports compact thermal design. Use the manufacturer timing diagrams to establish clocking, acquisition latency, and the relationship between sample rate and host data transfer.
अनुशंसित
Communications Receivers
The AD977AAR can digitize intermediate or control signals in communications equipment where 16-bit resolution and a 200 kSPS conversion rate are sufficient. Serial I/O helps preserve board area and reduce routing complexity compared with a wide parallel data bus. The selectable 0 to 5 V, 0 to 4 V, ±5 V, and ±3.3 V ranges allow interface selection according to the receiver architecture. Before insertion, confirm signal bandwidth, allowable aliasing, reference accuracy, and clock-jitter sensitivity in the complete receiver chain.
अनुशंसित
Medical Monitoring Equipment
The AD977AAR may be used in medical monitoring and diagnostic instruments that require precise digitisation of low-frequency or controlled-bandwidth physiological signals. Its 16-bit resolution provides 65,536 nominal code levels, and the 200 kSPS rate offers additional sampling margin relative to many low-speed acquisition tasks. The single 5 V operation simplifies analog rail planning. Medical use still requires system-level validation of input protection, isolation, calibration, electrical safety, and the operating-temperature and qualification requirements applicable to the finished instrument.
अनुशंसित
Precision Test and Measurement
The AD977AAR can serve as the conversion element in programmable instrumentation, source-measurement equipment, and laboratory data-acquisition front ends. A 16-bit converter at 200 kSPS is appropriate when the instrument needs consistent numerical resolution and moderate acquisition speed without a parallel data bus. The SOIC package supports accessible assembly and replacement. For laboratory accuracy, evaluate reference stability, gain and offset correction, input settling, source impedance, calibration strategy, and the bandwidth of the complete analog path rather than relying on resolution alone.
अनुशंसित
Embedded Control and Monitoring
The AD977AAR is appropriate for embedded controllers that acquire analog process variables and communicate the results through a serial peripheral interface. Its 200 kSPS capability allows acquisition schedules faster than 100 kSPS, while the single 5 V supply and low stated dissipation simplify power distribution. The converter can sit beside a microcontroller or DSP, with the host issuing clock commands and receiving serial samples. Design the reference and input network for the selected range, provide stable decoupling, and check that the controller supports the converter’s serial clock and data timing.
अनुशंसित
अनुशंसित उत्पादों का सारांश
के लिए इंजीनियरिंग संदर्भ डेटा AD977AAR — तुलना, डिज़ाइन मार्गदर्शन और अनुपालन जानकारी।
चयन गाइड
विकल्पों के साथ तुलना
| पैरामीटर | यह उत्पाद | AD977AR | AD977A | AD977AZ | AD977ARZ | AD977AARZ |
|---|---|---|---|---|---|---|
| Brand | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Analog Devices |
| Package | 20-SOIC | 20-SOIC | 20-SOIC | 20-SOIC | 20-SOIC | 20-SOIC |
| Resolution | 16 bit | 16 bit | 16 bit | 16 bit | 16 bit | 16 bit |
| Throughput Rate | 200 kSPS | 100 kSPS | 200 kSPS | 200 kSPS | 100 kSPS | 200 kSPS |
| Converter Architecture | Successive approximation | Successive approximation | Successive approximation | Successive approximation | Successive approximation | Successive approximation |
| Supply Voltage | 5 V single supply | 5 V single supply | 5 V single supply | 5 V single supply | 5 V single supply | 5 V single supply |
| Power Dissipation | 100 mW maximum | 100 mW maximum | 100 mW maximum | 100 mW maximum | 100 mW maximum | 100 mW maximum |
| Input Ranges | 0 to 5 V, 0 to 4 V, ±5 V, or ±3.3 V | 0 to 5 V, 0 to 4 V, ±5 V, or ±3.3 V | 0 to 5 V, 0 to 4 V, ±5 V, or ±3.3 V | 0 to 5 V, 0 to 4 V, ±5 V, or ±3.3 V | 0 to 5 V, 0 to 4 V, ±5 V, or ±3.3 V | 0 to 5 V, 0 to 4 V, ±5 V, or ±3.3 V |
| Interface | Serial I/O | Serial I/O | Serial I/O | Serial I/O | Serial I/O | Serial I/O |
मुख्य विशेषताएँ
- Higher conversion throughput than the AD977 (बनामAD977AR)
- Single 5 V integration with a compact serial interface (बनामAD977AZ)
- Low-power operation with a dedicated power-down state (बनामAD977AARZ)
डिज़ाइन नोट्स
Route the serial clock, data, and control signals away from the analog input and reference nodes. Use a continuous ground plane, place the input network close to the converter, and keep digital return currents out of the sensitive analog-input area. The manufacturer timing diagrams should be used to set acquisition timing and establish the maximum allowable clock jitter before PCB release.
Place the input, reference, and decoupling components directly beside their associated AD977AAR pins. Keep the analog trace short, avoid creating stubs, and provide a low-impedance ground return for the converter and front end. Use the 20-SOIC footprint and manufacturer pin-description table when defining the land pattern and assembly documentation.
Design a stable 5 V supply path for the analog converter and place local high-frequency decoupling at the supply pins. Check the converter’s maximum power dissipation of 100 mW against the actual supply voltage, selected input range, and operating sample rate. Use the manufacturer power-down guidance when the acquisition system spends substantial time idle.
Do not treat the AD977 as an automatic replacement for the AD977AAR: its 100 kSPS throughput is half the AD977AAR’s 200 kSPS rate. Also confirm whether the selected input range requires external sign inversion or scaling for bipolar signals. Before production, validate settling time, reference accuracy, clocking, and digital interface timing across the intended input bandwidth.
अनुपालन जानकारी
Compliance attributes were not stated for AD977AAR in the manufacturer product-page or datasheet search excerpts.
