AD676KD - 16-Bit 100 kSPS Parallel ADC | Analog Devices
N.º de pieza: AD676KD ✗ Fin de vidaAD676KD Descripción general
Alternativas directas para AD676KD — 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 AD676KD (mismo factor de forma y huella) — difiere en Package, Architecture, Autocalibration, Conversion Time, Input Type.
AD676JD
✅ Sustitución directaConsulte el precio
Ver hoja de datos →AD676KDZ
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
AD676TD/883B
✅ Sustitución directaConsulte el precio
Ver hoja de datos →AD676KD Valores máximos y características eléctricas
| Device Type | 16-bit parallel-output analog-to-digital converter |
| Converter Architecture | Switched-capacitor charge-redistribution SAR |
| Resolución | 16 bit |
| Number of Analog Inputs | 1 input |
| Conversion Rate | 100 kSPS |
| Total Conversion Time | 10 microseconds |
| Output Format | Parallel output |
| On-Chip Sample-and-Hold | Yes |
| Autocalibration | On-chip autocalibration |
| Missing Codes | No missing codes |
| Integral Nonlinearity | 1 LSB typical |
| Total Harmonic Distortion | 97 dB |
| Signal-to-Noise Plus Distortion | 90 dB |
| Full-Power Bandwidth | 1 MHz |
| Encapsulado | 28-pin ceramic DIP (28-CDIP) |
| Tipo de montaje | Through-hole |
| Temperature Grade | Commercial |
Guía de configuración de pines de AD676KD 28-pin ceramic dip (28-cdip)
Configuración de pines para AD676KD (encapsulado 28-pin ceramic dip (28-cdip)). Este componente analógico presenta pines de entrada, salida y alimentación. Consulte la hoja de datos del fabricante para conocer las configuraciones de los pines de ajuste de offset, compensación y habilitación. Ideal para circuitos de acondicionamiento de señal y amplificadores.
No hay datos detallados de patillaje disponibles para AD676KD.
Consulte la hoja de datos para ver la configuración completa de patillas.
Aplicaciones típicas
AD676KD es adecuado para 6 aplicacións: Precision Industrial Process Measurement, Laboratory Instrumentation and Data Acquisition, Audio and Low-Level Signal Conversion, Sensor Signal Acquisition, Power and Control Monitoring, Retrofit and Legacy Measurement Systems.
Precision Industrial Process Measurement
The AD676KD fits industrial process measurement when 16-bit amplitude resolution is needed without moving to a much faster converter. Its 100 kSPS rate and 10 microsecond conversion time provide repeated updates from pressure, temperature, flow, or level sensors, while the specified 1 LSB typical INL supports consistent digital readings. The integrated sample-and-hold captures the conditioned sensor signal, and autocalibration corrects internal nonlinearity. The parallel output requires careful routing of 16 data lines and control signals, while the ceramic DIP package favors stable through-hole laboratory and industrial boards rather than compact handheld products.
Recomendado
Laboratory Instrumentation and Data Acquisition
The AD676KD is appropriate for laboratory instrumentation that repeatedly samples analog signals and transfers each conversion over a parallel bus. Its 16-bit resolution preserves fine signal detail, while the 100 kSPS throughput supports continuous waveform and measurement acquisition at rates up to the converter's specified limit. The 1 MHz full-power bandwidth provides input-frequency headroom, while the 90 dB SNR and 97 dB THD figures are valuable when characterizing low-level signals. Designers should use clean references, a suitable input driver, and a grounded layout because the AD676KD is a through-hole ceramic-DIP device rather than a compact surface-mount converter.
Recomendado
Audio and Low-Level Signal Conversion
The AD676KD can be used for high-resolution acquisition of low-level audio or instrumentation signals when parallel output and a 100 kSPS ceiling are acceptable. The converter's 97 dB THD and 90 dB SNR characterize harmonic and noise performance, while its 16-bit output supports substantial numerical headroom for downstream processing. The 1 MHz full-power bandwidth allows the analog input path to cover frequencies beyond the maximum sample rate's Nyquist region under the appropriate anti-aliasing design. Input conditioning, reference stability, and careful grounding remain critical because converter headline resolution alone does not determine end-to-end signal accuracy.
Recomendado
Sensor Signal Acquisition
The AD676KD is suitable for acquiring sensor outputs that require finer quantization than an 8-bit or 12-bit converter while retaining a straightforward parallel data interface. The 100 kSPS conversion rate accommodates many temperature, pressure, strain-gauge, and chemical-sensor systems, while the on-chip sample-and-hold simplifies acquisition timing. A 16-bit result can reveal small changes that would otherwise be lost in sensor noise or coarse quantization. The application still requires sensor-specific excitation, filtering, input protection, and reference design; the verified excerpts do not provide input capacitance or common-mode limits for final front-end sizing.
Recomendado
Power and Control Monitoring
The AD676KD can monitor slowly varying or repetitive power-control signals when the system requires 16-bit data and a dedicated parallel acquisition path. Its 100 kSPS rate is more than sufficient for many voltage, current, and position feedback loops, and autocalibration helps maintain consistent conversion results by correcting internal nonlinearity. The parallel bus allows the controller to latch complete words efficiently. Designers should place the converter's digital return current away from sensitive analog input paths and verify reference stability, input range, and supply requirements against the complete manufacturer datasheet before deployment.
Recomendado
Retrofit and Legacy Measurement Systems
The AD676KD is a practical choice for maintaining or replicating a legacy 28-pin parallel ADC installation. Its 16-bit resolution, 100 kSPS rate, and through-hole ceramic-DIP format are compatible with the physical and electrical style of older measurement systems, while parallel output avoids adding a serial converter to an existing processor interface. The device is better suited to controlled industrial or laboratory equipment than compact portable products. During a repair or board refresh, verify the ceramic package, pinout, temperature grade, supply rails, and reference polarity against the installed equipment because the supplied excerpts do not provide complete pin-level data.
Recomendado
Resumen de productos recomendados
Datos de referencia de ingeniería para AD676KD — comparación, orientación de diseño e información de cumplimiento.
Guía de selección
Comparación con alternativas
| Parámetro | Este producto | AD676JD | AD676KDZ | AD676 |
|---|---|---|---|---|
| Package | 28-CDIP | 28-CDIP | 28-CDIP | 28-CDIP |
| Brand | Analog Devices | Analog Devices | Analog Devices | Analog Devices |
| Resolution | 16 bit | 16 bit | 16 bit | 16 bit |
| Conversion Rate | 100 kSPS | 100 kSPS | 100 kSPS | 100 kSPS |
| Architecture | Switched-capacitor charge-redistribution SAR | Switched-capacitor charge-redistribution SAR | Switched-capacitor charge-redistribution SAR | Switched-capacitor charge-redistribution SAR |
| Output Interface | Parallel output | Parallel output | Parallel output | Parallel output |
| Total Conversion Time | 10 microseconds | 10 microseconds | 10 microseconds | 10 microseconds |
| Integral Nonlinearity | 1 LSB typical | 1 LSB typical | 1 LSB typical | 1 LSB typical |
| Total Harmonic Distortion | 97 dB | 97 dB | 97 dB | 97 dB |
| Signal-to-Noise Plus Distortion | 90 dB | 90 dB | 90 dB | 90 dB |
| Autocalibration | On-chip autocalibration | On-chip autocalibration | On-chip autocalibration | On-chip autocalibration |
Diferenciadores clave
- Parallel 16-bit acquisition in a 28-pin package (frente a AD677)
- 100 kSPS throughput with integrated sample-and-hold (frente a AD676KDZ)
- On-chip nonlinear correction (frente a AD676JD)
Notas de diseño
Route the 16-bit parallel output as a short, continuous bus into the receiving logic and keep the ADC clock and control traces away from the analog input and reference nets. The ceramic DIP package makes prototype wiring straightforward, but it does not eliminate sensitivity to ground bounce and digital crosstalk. Use a quiet analog ground region, connect it to the system ground at the regulator or converter return point, and avoid sharing narrow copper paths between reference current, digital output current, and input-return current.
Separate analog and digital supply paths where the board architecture permits, and place local high-frequency bypass capacitors directly at the device supply pins. The supplied excerpts do not state the AD676KD supply-voltage tolerances, recommended capacitor values, or permissible sequencing, so those values must come from the manufacturer datasheet rather than generic rules. Verify logic levels against the receiving device and confirm that the reference remains within its specified operating range across temperature and supply variation.
Drive the analog input from a low-source-impedance buffer when the source is not a dedicated sample-and-hold driver. The integrated sample-and-hold helps acquisition, but source settling, antialias filtering, and bandwidth still depend on the external front end. The specified 1 MHz full-power bandwidth should be treated as an input-path characteristic, not permission to omit filtering. Use the manufacturer transfer function and acquisition requirements to size the filter and establish the maximum input bandwidth.
Do not substitute the AD677 for the AD676KD: the AD677 uses a 16-pin serial output while the AD676KD uses a 28-pin parallel output. Also verify the ordering suffix, package, temperature grade, reference wiring, and pinout before accepting AD676JD or AD676KDZ as replacements. The supplied evidence establishes family similarity, but it does not provide every suffix-specific ordering detail. A mechanically similar package is not sufficient evidence of a safe drop-in replacement.
Información de cumplimiento
The supplied verified excerpts identify the AD676KD as a commercial-grade 28-CDIP ADC but do not contain explicit RoHS, REACH, halogen-free, lead-free, conflict-minerals, or automotive-qualification statements. AEC-Q100 is not applicable to the stated commercial-grade application; no automotive qualification is claimed.
