AD7892AR-1REEL - 12-Bit 500kSPS SAR ADC | Analog Devices
MPN: AD7892AR-1REEL ✗ اختتامِ زندگیAD7892AR-1REEL جائزہ
An ADC (analog-to-digital converter) is a mixed-signal semiconductor that translates real-world analog voltages into discrete digital codes for processing by microcontrollers, DSPs, or FPGAs. Within the data-converter hierarchy, SAR (successive-approximation register) ADCs sit between flash converters and sigma-delta ADCs in speed and resolution: they offer 8-18 bits of resolution with 0.1-10 MSPS throughput and low latency, making them the workhorse for multiplexed control loops, instrumentation, and motor control. The AD7892 family belongs to this SAR category and is further classified as a bipolar-input, single-supply precision ADC for industrial measurement applications.
Key specifications include 12-bit resolution (no missing codes), 500 kSPS throughput (the AD7892-1 grade; the AD7892-3 grade reaches 600 kSPS), bipolar ±5 V or ±10 V analog input range, ±5 V single-supply operation, internal 2.5 V reference, and 1.47 µs ADC conversion time. The 24-pin SOIC wide-body package offers 0.295 inch (7.50 mm) body width and operates from -40 °C to +85 °C ambient, suitable for industrial environments.
Architecturally, the converter combines a high-speed comparator, charge-redistribution DAC array, and successive-approximation register clocked from an internal oscillator. The on-chip track/hold front-end settles in ~150 ns, allowing full throughput at the rated 500 kSPS without external buffering for many sensor signals.
Typical applications include industrial process control, motor control feedback loops, multi-channel data acquisition systems, instrumentation front-ends, and precision transducer signal conditioning. Design engineers select the AD7892-1 when bipolar input range and single-supply operation are required in a compact analog front-end.
کے لیے ڈراپ اِن متبادل AD7892AR-1REEL — یکساں پیکیج، پن سے پن مطابقت پذیر۔ مختلف پیکیج والے پرزے جن کے لیے PCB دوبارہ کام درکار ہو، شامل نہیں ہیں۔
اس سیریز میں مختلف ورژن
اسی سیریز کے ماڈلز جو ڈراپ اِن مطابقت رکھتے ہیں AD7892AR-1REEL (یکساں فارم فیکٹر اور فٹ پرنٹ) — میں مختلف Package, Operating Temperature, Supply Voltage, Interface, Number of Channels.
AD7892ARZ-1REEL
✅ ڈراپ-اِن📋 حوالہ جاتی متبادل (کیٹلاگ میں نہیں)
AD7892AR-1
✅ ڈراپ-اِنقیمت کے لیے رابطہ کریں
ڈیٹا شیٹ دیکھیں →AD7892ARZ-1
✅ ڈراپ-اِن📋 حوالہ جاتی متبادل (کیٹلاگ میں نہیں)
AD7892AR-1REEL7
✅ ڈراپ-اِن📋 حوالہ جاتی متبادل (کیٹلاگ میں نہیں)
AD7265BCPZ-REEL
✅ ڈراپ-اِنقیمت کے لیے رابطہ کریں
ڈیٹا شیٹ دیکھیں →AD7264BSTZ-5-RL7
✅ ڈراپ-اِنقیمت کے لیے رابطہ کریں
ڈیٹا شیٹ دیکھیں →AD7324BRUZ-REEL
✅ ڈراپ-اِنقیمت کے لیے رابطہ کریں
ڈیٹا شیٹ دیکھیں →AD7892AR-1REEL زیادہ سے زیادہ ریٹنگز اور برقی خصوصیات
| Number of Bits | 12 |
| سیمپلنگ ریٹ | 500 kSPS (AD7892-1, AD7892-2); 600 kSPS (AD7892-3) |
| Conversion Time | 1.47 µs |
| Number of Inputs | 1 (single channel, with ±5V or ±10V bipolar input range) |
| Data Interface | Serial and Parallel |
| Architecture | SAR (Successive Approximation) |
| Analog Input Type | Bipolar |
| Analog Input Range | ±5 V or ±10 V (input scale select pin) |
| سپلائی وولٹیج | +5 V single supply |
| Internal Reference | +2.5 V (on-chip) |
| On-Chip Track/Hold | Yes |
| پیکیج | 24-pin SOIC wide body (0.295 inch / 7.50 mm width), Tape & Reel |
| آپریٹنگ درجہ حرارت | -40 °C to +85 °C |
| ماؤنٹنگ ٹائپ | Surface Mount |
AD7892AR-1REEL پن کنفیگریشن
| پن 1 | VSS/AGND — Analog ground |
| پن 2 | DGND — Digital ground |
| پن 3 | VDD — +5 V supply |
| پن 4 | VDRIVE — Logic supply for digital interface |
| پن 5 | CAP — Reference bypass capacitor pin |
| پن 6 | REFIN/REFOUT — Reference input / 2.5 V reference output |
| پن 7 | AIN/HI — Analog input high |
| پن 8 | RANGE — Input range select (5V or 10V full scale) |
| پن 9 | CONVST — Conversion start input |
| پن 10 | BUSY — Conversion in progress output |
| پن 11 | EOC — End of conversion indicator |
| پن 12 | SCLK — Serial interface clock |
| پن 13 | DOUT — Serial data output |
| پن 14 | DIN — Serial data input (daisy-chain) |
| پن 15 | DRDY — Data ready / frame sync |
| پن 16 | CS — Chip select (active low) |
| پن 17 | WR — Parallel write control |
| پن 18 | RD — Parallel read control |
| پن 19 | MODE — Serial/parallel mode select |
| پن 20 | DB0 — Parallel data bit 0 (LSB) |
| پن 21 | DB1 — Parallel data bit 1 |
| پن 22 | DB2 — Parallel data bit 2 |
| پن 23 | DB3 — Parallel data bit 3 |
| پن 24 | DGND — Digital ground (exposed pad optional) |
عام استعمالات
AD7892AR-1REEL کے لیے موزوں ہے 7 ایپلیکیشنs: Industrial Process Control, Motor Control Current Sensing, Multi-Channel Data Acquisition Systems, Instrumentation and Precision Transducer Digitizing, Power-Line Monitoring and Energy Meters, Medical Patient-Monitoring Front-Ends, Audio and Acoustic Test Equipment.
Industrial Process Control
The AD7892AR-1REEL's bipolar ±5 V or ±10 V input range paired with a single +5 V supply makes it ideal for digitizing 4-20 mA transmitter loop outputs, thermocouple-amplifier signals, and pressure/load-cell front-ends. Its 1.47 µs conversion time and 500 kSPS throughput let a single part multiplex four sensors at >100 kSPS each, while the on-chip 2.5 V reference removes external reference drift.
تجویز کردہ
Motor Control Current Sensing
In BLDC and servo drives, the AD7892AR-1REEL samples shunt-resistor voltage drops across the three phases with sub-2 µs latency thanks to its 1.47 µs conversion time. The bipolar input directly accommodates bi-directional phase currents without external op-amp inversion, and 500 kSPS throughput supports PWM frequencies up to 50 kHz with synchronous sampling. The 24-pin SOIC package fits well within low-side shunt amplifier layouts.
تجویز کردہ
Multi-Channel Data Acquisition Systems
Using the AD7892AR-1REEL with an external analog multiplexer, designers can build 8- or 16-channel data acquisition front-ends that aggregate up to 500 kSPS aggregate sample rate. The internal track/hold eliminates front-end buffer amps for settling times of <150 ns, and the serial-output mode reduces PCB routing density in slot-card PXI/cPCI designs. The wide-body SOIC handles the thermal load in densely populated chassis.
تجویز کردہ
Instrumentation and Precision Transducer Digitizing
The AD7892AR-1REEL is well matched to precision load cells, strain gauges, and LVDT front-ends that produce bipolar millivolt-level outputs. Its 12-bit no-missing-codes linearity, integrated track/hold, and ±10 V input range accept conditioned signals directly, while the choice of two's-complement, offset-binary or straight-binary output codes simplifies software-side scale-and-offset calibration on 32-bit microcontrollers.
تجویز کردہ
Power-Line Monitoring and Energy Meters
Single-phase and polyphase energy meters use the AD7892AR-1REEL to digitize current-transformer and Rogowski-coil outputs simultaneously with the line voltage waveform. With 500 kSPS throughput the part captures all relevant harmonics up to the 50th (per IEC 61000-4-7 instrument classes), and the bipolar input handles both half-cycles without external bias circuitry. The fixed +5 V supply simplifies isolation-barrier design.
تجویز کردہ
Medical Patient-Monitoring Front-Ends
ECG, EEG, and SpO2 front-ends benefit from the AD7892AR-1REEL's bipolar input range and 12-bit linear-no-missing-codes performance when sampling electrode signals at 250-500 kSPS aggregate. The internal 2.5 V reference stabilizes ratiometric measurements, and the 24-pin SOIC package footprint is well documented for medical IEC 60601-1 dielectric clearance layouts in low-power bedside monitors.
تجویز کردہ
Audio and Acoustic Test Equipment
Test and measurement equipment digitizing acoustic signals from microphones, hydrophones, and accelerometers uses the AD7892AR-1REEL for its low-noise SAR conversion at 500 kSPS, supporting wideband acoustic analysis up to 200 kHz audio bandwidth. Serial output mode keeps the PCB within tight chassis layouts. For highest-performance audio, ADI recommends the dual-channel AD7266 family.
تجویز کردہ
تجویز کردہ پروڈکٹس کا خلاصہ
کے لیے انجینئرنگ ریفرنس ڈیٹا AD7892AR-1REEL — موازنہ، ڈیزائن رہنمائی، اور تعمیل کی معلومات۔
انتخاب کی گائیڈ
متبادلات کے ساتھ موازنہ
| پیرامیٹر | یہ پروڈکٹ | AD7892ARZ-1REEL | AD7892AR-1 | AD7265BCPZ-REEL | AD7264BSTZ-5-RL7 |
|---|---|---|---|---|---|
| Brand | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Analog Devices |
| Package | 24-SOIC wide body (T&R) | 24-SOIC wide body (T&R) | 24-SOIC wide body (tube) | 32-LFCSP (T&R) — footprint change | 24-LFCSP (T&R) |
| Resolution | 12-bit | 12-bit | 12-bit | 12-bit | 14-bit (upgrade) |
| Throughput (kSPS) | 500 | 500 | 500 | 1000 | 1000 |
| Input Range | ±5 V or ±10 V bipolar | ±5 V or ±10 V bipolar | ±5 V or ±10 V bipolar | 0-VREF true-differential bipolar | Differential bipolar (VREF/VSS) |
| Interface | Serial + Parallel | Serial + Parallel | Serial + Parallel | Serial-only | Serial-only |
| Supply Voltage | +5 V single | +5 V single | +5 V single | +5 V single | +5 V single |
| RoHS Status | non-RoHS (SnPb) | RoHS-compliant (matte-tin) | non-RoHS (SnPb) | RoHS-compliant | RoHS-compliant |
اہم امتیازی خصوصیات
- Same die with RoHS-compliant finish (بمقابلہAD7892AR-1REEL (this part))
- Higher throughput in modern LFCSP (بمقابلہAD7265BCPZ-REEL)
- 14-bit resolution upgrade in same family (بمقابلہAD7264BSTZ-5-RL7)
ڈیزائن نوٹس
Power the AD7892AR-1REEL from a clean +5 V analog rail; place a 10 µF tantalum + 0.1 µF ceramic pair directly at the VDD pin and repeat decoupling at the VDRIVE pin (when used). The on-chip 2.5 V reference output needs its CAP pin loaded with a 1 µF ceramic for stability. For best dynamic performance, place a ferrite bead between the analog and digital +5 V rails.
Route the analog input traces (AIN/HI, RANGE) as a guarded differential pair, kept away from the parallel data bus to reduce digital kickback. The DB0-DB11 lines should be impedance-controlled when traces exceed 50 mm. Tie unused digital inputs (CS, WR, RD) to a defined logic level - never leave them floating, or the converter's interface state becomes unpredictable at startup.
Do not exceed VDD + 0.3 V on any digital input or sink more than 50 mA through the VDD pin during hot-plug events. Mis-setting the RANGE pin to ±5 V (instead of ±10 V) while expecting bipolar 10 V swings clips the input at full scale and corrupts readings. When cascading two ADCs through DIN/DOUT, observe the daisy-chain timing diagram in the datasheet exactly, since tDSDT and tDCSH are asymmetric.
تعمیل کی معلومات
The 'AR' suffix indicates the legacy SnPb (lead-bearing) finish and is NOT RoHS compliant. For RoHS-compliant production, choose the 'ARZ' suffix variant. This part is not AEC-Q100 qualified - not intended for automotive underhood applications.
