AD7650ACPZRL - 16-Bit 570kSPS SAR ADC | Analog Devices
N.º de pieza: AD7650ACPZRL ✗ Fin de vida| Cant. | Precio unitario | Total |
|---|---|---|
| 1 | $28.5 | $28,50 |
| 10 | $25.62 | $256,20 |
| 100 | $22.85 | $2.285,00 |
| 500 | $20.14 | $10.070,00 |
| 1.000 | $17.92 | $17.920,00 |
AD7650ACPZRL Descripción general
A successive approximation register (SAR) ADC is a precision data-acquisition converter that performs a binary search against the analog input using an internal capacitive charge-redistribution DAC, producing a conversion result in one cycle per bit with zero pipeline latency. SAR ADCs sit within the broader data-converter hierarchy of analog-to-digital converters, which themselves belong to the data acquisition and signal chain IC category. Compared with pipeline or delta-sigma ADCs, SAR architectures excel at multiplexed, multi-channel, single-shot and DC-precision measurements because each conversion is fully settled before the next sample begins.
Key features of the AD7650 include 570 kSPS throughput in Warp Mode, 500 kSPS in Normal Mode, 16-bit resolution with no missing codes, an internal 2.5 V reference, throughput-scalable power dissipation (77 mW at full speed down to 21 µW at 100 SPS), and hardware-configurable input ranges. The LFCSP-48 package with exposed pad (EP) keeps theta_JA low for reliable operation across the -40°C to +85°C industrial temperature range.
Architecturally, the AD7650 uses Analog Devices' iCMOS process to combine high-voltage bipolar input ranges with low-voltage CMOS logic on a single die. The integrated S/H front-end, precision reference, and flexible digital interface (parallel word or serial SPI/QSPI/DSP) make it a turnkey solution for industrial control loops, power-line monitoring and multi-axis data acquisition systems.
Typical applications include industrial process control (PLC analog input modules), multi-axis motor control position feedback, power-line monitoring and protective relaying, data acquisition boards for medical and instrumentation equipment, and high-speed multiplexed signal acquisition. The flexible interface allows direct connection to DSPs, FPGAs and microcontrollers without external glue logic.
When designing with the AD7650, ensure the exposed die leads are bonded or the exposed pad is soldered to a sufficiently large copper pour to maintain the published thermal resistance; bypassing it, especially for high-throughput industrial-grade operation, will compromise long-term reliability. Use the parallel interface for highest sample rates and the serial interface for space-constrained designs with isolation barriers.
This page synthesizes verified distributor pricing, drop-in alternative MPNs from the ADI SAR portfolio, and practical design notes that go beyond the integrated information typically available from distributor catalog listings.
Alternativas directas para AD7650ACPZRL — mismo encapsulado, compatible pin a pin. Se excluyen las piezas de otro encapsulado que requieren retrabajo de la PCB.
Variantes de esta serie
Modelos de la misma serie compatibles directamente con AD7650ACPZRL (mismo factor de forma y huella) — difiere en Architecture, Data Interface, Package, Resolution, Input Type.
Herramienta de comparación rápida — seleccione piezas alternativas para compararlas lado a lado:
AD7650ACPZ
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
AD7652ACPZ
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
AD7650ACPRL
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
AD7675ACPZ
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
AD7650ACPZRL Valores máximos y características eléctricas
| Resolución | 16 bits |
| Sample Rate | 570 kSPS (Warp), 500 kSPS (Normal) |
| Number of Channels | 1 (pseudo-differential) |
| Architecture | SAR (charge redistribution) |
| Input Type | Pseudo-Differential, Unipolar/Bipolar |
| Rango de tensión de entrada | 0 V to 2.5 V (unipolar); ±2.5 V (bipolar with driver) |
| Tensión de alimentación | 5 V (single supply) |
| Power Dissipation | 77 mW typ @ 444 kSPS; 7 µW power-down |
| Digital Interface | Parallel, SPI, QSPI, DSP-compatible serial |
| Internal Reference | 2.5 V |
| Data Interface | SPI, Parallel, DSP |
| Encapsulado | LFCSP-48 EP (7x7 mm) |
| Temperatura de funcionamiento | -40 °C to +85 °C (industrial) |
| Throughput Scalable Power | 21 µW at 100 SPS |
| Pipeline Delay | None (single-cycle conversion) |
| Estado RoHS | Compliant |
Configuración de pines de AD7650ACPZRL
| Pin 1 | AGND — Analog ground reference |
| Pin 2 | VREF — Reference decoupling pin |
| Pin 3 | REF — Reference input/output (2.5 V) |
| Pin 4 | CAP — Reference buffer bypass capacitor |
| Pin 5 | AGND — Analog ground |
| Pin 6 | IN+ — Analog input (positive) |
| Pin 7 | IN- — Analog input (negative / sense) |
| Pin 8 | AGND — Analog ground |
| Pin 9 | AVCC — Analog 5 V supply |
| Pin 10 | AVCC — Analog 5 V supply |
| Pin 11 | AVCC — Analog 5 V supply |
| Pin 12 | AVCC — Analog 5 V supply |
| Pin 13 | DGND — Digital ground |
| Pin 14 | DVCC — Digital 5 V supply |
| Pin 15 | DVCC — Digital 5 V supply |
| Pin 16 | DGND — Digital ground |
| Pin 17 | CONVST — Conversion start input |
| Pin 18 | BUSY — Conversion in progress output |
| Pin 19 | RD — Read input (parallel mode) |
| Pin 20 | CS — Chip select input |
| Pin 21 | RESET — Reset input |
| Pin 22 | OB/2C — Output format select (straight binary / twos complement) |
| Pin 23 | SER/PAR — Serial / parallel interface select |
| Pin 24 | WARP — Warp mode select (570 kSPS) |
| Pin 25 | IMPULSE — Impulse mode select (low-duty power scaling) |
| Pin 26 | DGND — Digital ground |
| Pin 27 | DOUT — Serial data output (SPI mode) |
| Pin 28 | SCLK — Serial clock input (SPI mode) |
| Pin 29 | DB15 — Parallel data bit 15 (MSB) |
| Pin 30 | DB14 — Parallel data bit 14 |
| Pin 31 | DB13 — Parallel data bit 13 |
| Pin 32 | DB12 — Parallel data bit 12 |
| Pin 33 | DB11 — Parallel data bit 11 |
| Pin 34 | DB10 — Parallel data bit 10 |
| Pin 35 | DB9 — Parallel data bit 9 |
| Pin 36 | DB8 — Parallel data bit 8 |
| Pin 37 | DB7 — Parallel data bit 7 |
| Pin 38 | DB6 — Parallel data bit 6 |
| Pin 39 | DB5 — Parallel data bit 5 |
| Pin 40 | DB4 — Parallel data bit 4 |
| Pin 41 | DB3 — Parallel data bit 3 |
| Pin 42 | DB2 — Parallel data bit 2 |
| Pin 43 | DB1 — Parallel data bit 1 |
| Pin 44 | DB0 — Parallel data bit 0 (LSB) |
| Pin 45 | DGND — Digital ground |
| Pin 46 | RANGE — Input range select (unipolar / bipolar) |
| Pin 47 | AVCC — Analog 5 V supply |
| Pin 48 | EP — Exposed pad - thermal and ground bond |
Aplicaciones típicas
AD7650ACPZRL es adecuado para 6 aplicacións: Industrial Process Control (PLC Analog Input Modules), Power Line Monitoring and Protective Relaying, Multi-Axis Motor Control Position Feedback, Medical Instrumentation Data Acquisition, Data Acquisition Boards and PCIe Digitizers, Vibration and Acoustic Spectrum Analysis.
Industrial Process Control (PLC Analog Input Modules)
The AD7650ACPZRL fits PLC analog input modules thanks to its 16-bit resolution, 570 kSPS throughput and ±2.5 V bipolar input range that directly digitizes industrial ±10 V signals after external resistor scaling. Its pseudo-differential input rejects common-mode noise from long sensor cable runs in factory-floor environments, while the parallel interface supports simultaneous sampling of multiple ADC instances. The integrated 2.5 V reference and throughput-scalable power from 77 mW at full speed down to 21 µW at 100 SPS allow the same module to handle fast transient acquisition and slow precision channels. Designers pair the AD7650ACPZRL with the ADuM3151 isolator and a Cortex-M4 host MCU for full isolated 16-bit analog front ends. The exposed pad on the LFCSP-48 package keeps junction temperatures below 100°C even at 500 kSPS continuous conversion in sealed IP67 modules.
Recomendado
Power Line Monitoring and Protective Relaying
For power line monitoring and protective relaying, the AD7650ACPZRL delivers 16-bit resolution at 570 kSPS, sufficient to capture multiple 50/60 Hz line cycles with margin for harmonic analysis up to the 50th harmonic. Its ±2.5 V bipolar input accepts voltage and current transducer outputs directly, while the pseudo-differential architecture rejects common-mode transients during switchgear operation. The single 5 V supply simplifies auxiliary power design in substation equipment, and the LFCSP-48 EP package provides the thermal headroom needed for continuous full-speed conversion. Engineers often pair the AD7650ACPZRL with the ADA4077-2 op-amp for input signal conditioning and the ADSP-BF706 for harmonic and RMS calculation. The zero-pipeline-delay SAR architecture guarantees deterministic per-sample latency, which is mandatory for IEC 61850-compliant protection schemes.
Recomendado
Multi-Axis Motor Control Position Feedback
Multi-axis servo drives and robotics benefit from the AD7650ACPZRL's 16-bit resolution and 570 kSPS throughput, which captures resolver-derived and encoder-derived analog signals at multi-kHz loop rates with sub-arcminute positioning precision. Its single pseudo-differential input per IC scales to multi-axis systems by placing one AD7650ACPZRL per axis, all synchronized via a shared CONVST signal. The parallel interface streams conversion results directly into an FPGA without glue logic, enabling deterministic latency for current-loop control. The throughput-scalable power dissipation allows the same hardware to run full-speed during dynamic moves and drop to 21 µW during idle holding, reducing overall drive thermal budget. Design teams pair the ADC with the AD2S1210 resolver-to-digital converter and an Xilinx Spartan-7 FPGA for full closed-loop servo control.
Recomendado
Medical Instrumentation Data Acquisition
Medical instrumentation such as patient monitors, infusion pumps and diagnostic imaging front-ends use the AD7650ACPZRL for its 16-bit precision and 570 kSPS throughput, capturing multi-channel physiological signals with high SNR and zero pipeline delay for real-time waveform display. Its pseudo-differential input rejects mains-frequency common-mode noise injected through patient electrode leads, while the 2.5 V internal reference minimizes external component count for compact portable designs. The LFCSP-48 EP package supports the -40°C to +85°C industrial temperature range required for IEC 60601-1 compliance testing. Engineers pair it with the AD620 low-noise instrumentation amplifier for ECG/EEG front-ends and the ADuM3151 isolator for patient isolation barriers. The 5 V single supply operation simplifies battery-powered designs where the ADC scales power with throughput for long battery life.
Recomendado
Data Acquisition Boards and PCIe Digitizers
PCIe and USB-based data acquisition boards use the AD7650ACPZRL to deliver 16-bit precision at 570 kSPS per channel, scaling to multi-channel systems by interleaving multiple ADCs with synchronized CONVST signals. Its parallel interface enables direct FIFO/DMA streaming into FPGAs at full sample rate without buffering, while the SPI/QSPI serial mode supports isolated USB digitizers with low pin count. The integrated 2.5 V reference eliminates the need for external reference circuitry, reducing BOM cost in high-channel-count systems. The LFCSP-48 EP package exposes a thermal pad that, when soldered to a 1-square-inch copper pour, keeps the junction temperature rise well within the 100°C derating limit even at continuous full-speed conversion. Designers combine the AD7650ACPZRL with an Artix-7 FPGA and PCIe Gen2 interface for high-performance modular digitizers.
Recomendado
Vibration and Acoustic Spectrum Analysis
Vibration monitoring and acoustic spectrum analysis systems deploy the AD7650ACPZRL for its 570 kSPS throughput, which provides Nyquist bandwidth above 250 kHz for ultrasonic and machinery vibration analysis up to the 50 kHz bearing-fault range. The 16-bit no-missing-codes resolution captures low-amplitude vibration signatures cleanly, while the pseudo-differential input rejects ground-loop noise common in factory machinery with variable-frequency drives. Throughput-scalable power allows continuous full-speed monitoring of critical assets while throttling back to 21 µW at 100 SPS for battery-powered wireless sensor nodes. Engineers pair the ADC with an IEPE-compatible front-end amplifier and stream data to a host over SPI or parallel interface into an STM32H7 MCU or Spartan-7 FPGA for FFT processing.
Recomendado
Resumen de productos recomendados
Datos de referencia de ingeniería para AD7650ACPZRL — comparación, orientación de diseño e información de cumplimiento.
Guía de selección
Comparación con alternativas
| Parámetro | Este producto | AD7650ACPZ | AD7652ACPZ | AD7650ACPRL | AD7675ACPZ |
|---|---|---|---|---|---|
| Brand | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Analog Devices |
| Package | LFCSP-48 EP (7x7 mm) | LFCSP-48 EP (7x7 mm) - same | LFCSP-48 EP (7x7 mm) - same | LFCSP-48 EP (7x7 mm) - same | LFCSP-48 EP (7x7 mm) - same |
| Resolution | 16 bits | 16 bits | 16 bits | 16 bits | 16 bits |
| Max Sample Rate | 570 kSPS (Warp) | 570 kSPS | 500 kSPS | 570 kSPS | 1 MSPS |
| Input Configuration | Pseudo-differential | Pseudo-differential | Pseudo-differential | Pseudo-differential | True differential |
| Power Dissipation | 77 mW @ 444 kSPS | 77 mW | ~70 mW | 77 mW | ~110 mW |
| Lifecycle Status | Obsolete | Obsolete | Active | Obsolete | Active |
| Internal Reference | 2.5 V | 2.5 V | 2.5 V | 2.5 V | 2.5 V |
Diferenciadores clave
- Integrated 2.5 V precision reference eliminates external REF BOM (frente a ADS8472IRGZR (TI))
- Throughput-scalable power dissipation from 21 µW to 77 mW (frente a AD7675ACPZ)
- LFCSP-48 EP package offers best-in-class thermal performance (frente a ADS8472IBRGZR (TI TQFP-48))
Notas de diseño
The LFCSP-48 EP package's exposed pad is the primary thermal path. Per the AD7650 datasheet, the package achieves its rated theta_JA only when the EP is soldered to a contiguous inner-layer copper pour of at least 1 square inch. At 570 kSPS continuous conversion (77 mW dissipation), a missing or undersized EP solder joint will push the junction temperature above 100°C and degrade long-term reliability in sealed enclosures. Always X-ray or AOI the EP solder fillet in production.
AVCC and DVCC should be decoupled with 10 µF tantalum plus 0.1 µF ceramic capacitors placed within 5 mm of the supply pins; the REF pin requires a 10 µF tantalum plus 0.1 µF ceramic for low-noise reference operation. Estimated: with no decoupling, reference noise rises ~3x and degrades SNR by 4-5 dB. In parallel mode, route DB0-DB15 away from analog input traces to minimize digital coupling into the sample-and-hold front end.
Do not leave the CONVST pin floating - tie it high through a pull-up to DVCC if not driven externally, otherwise the converter will free-run at unpredictable rates. In bipolar mode (RANGE pin high), ensure the input driver op-amp can swing to within 250 mV of AVCC and AGND to preserve linearity at the code edges. For serial interface, observe the t_QUIET timing parameter of ~25 ns before reading DB0-DB15 after BUSY falls low.
Separate analog (AVCC, AGND, REF, IN+, IN-) and digital (DVCC, DGND, DB0-DB15, CONVST, BUSY) ground planes, joining them only at the EP beneath the IC. Route the analog input traces as a guarded differential pair from the connector to IN+ and IN-, with the guard trace tied to the input driver reference. Keep the digital bus traces on the opposite side of the board to avoid coupling digital switching transients into the analog front end during full-speed Warp Mode operation.
Información de cumplimiento
RoHS and lead-free per Analog Devices product page. AEC-Q100 not applicable - this is an industrial-grade (-40C to +85C) ADC. Halogen-free status not explicitly stated in verified data. Conflict minerals compliance per Analog Devices corporate policy.
