ADS5103CPFBR - 10-Bit 40MSPS ADC w/ Int Ref | Texas Instruments
N.º de pieza: ADS5103CPFBR ✗ Fin de vida| Cant. | Precio unitario | Total |
|---|---|---|
| 1 | $7.2 | $7,20 |
| 10 | $6.45 | $64,50 |
| 100 | $5.7 | $570,00 |
| 500 | $5.05 | $2.525,00 |
| 1.000 | $4.45 | $4.450,00 |
ADS5103CPFBR Descripción general
An ADC (analog-to-digital converter) is a semiconductor device that converts continuous analog signals into discrete digital codes. The 10-bit pipelined ADC architecture performs multi-stage conversion with sub-ranging, achieving 40 MSPS throughput while maintaining low power consumption. ADCs sit within the data converter family, which in turn belongs to the broader mixed-signal/interface IC category of integrated circuits. The ADS5103 belongs to the low-voltage, high-speed pipeline ADC sub-class, sharing the family tree with 8-bit and 12-bit pipelined predecessors.
Key features include a 1.8 V analog and 1.8 V digital supply (with 3.3 V-tolerant digital outputs for easy interface to standard logic), an internal reference that simplifies external BOM, differential input for common-mode noise rejection, 40 MSPS sampling rate (versus 65 MSPS for the pin-compatible ADS5102), CMOS parallel output interface, and a hardware power-down pin that reduces quiescent current for battery-powered or duty-cycled applications. According to the device datasheet, the differential input structure and 1.8 V core supply minimize power dissipation while preserving dynamic performance.
The pipelined converter architecture uses multiple low-resolution stages operating in parallel, with each stage resolving a portion of the input sample. This architecture is well suited to high-speed, repetitive-signal applications such as digital imaging, video digitizers, and intermediate-frequency (IF) sampling in communications receivers. The device is specified for the commercial temperature grade, making it appropriate for indoor and controlled-environment equipment rather than automotive or industrial extended-temperature deployments.
Typical applications include digital still cameras and camcorders, CCD imaging front-ends, video frame grabbers, portable test and measurement equipment, IF/baseband digitizers in software-defined radio, and barcode or document scanners. The combination of small TQFP-48 footprint, internal reference, and 3.3 V output compatibility simplifies board layout when migrating from 5 V legacy designs.
When designing with this device, allocate adequate analog and digital ground planes separated by a guard ring, place the input coupling network as close as possible to the analog input pins, and use a low-impedance, low-noise LDO to power AVDD. Decouple each supply pin with both a 0.1 uF ceramic and a 10 uF bulk capacitor. Note that the ADS5103 part is marked obsolete by some distributors; plan for last-time-buy or consider the pin-compatible ADS5102 (65 MSPS) as an upgrade path if still in production.
This page synthesizes distributor pricing, drop-in TQFP-48 alternatives, and practical PCB layout guidance not aggregated in the manufacturer datasheet alone.
Alternativas directas para ADS5103CPFBR — 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 ADS5103CPFBR (mismo factor de forma y huella) — difiere en Package, Input Type, Reference, Digital Supply Voltage, Operating Temperature.
Herramienta de comparación rápida — seleccione piezas alternativas para compararlas lado a lado:
ADS5103CPFB
✅ Sustitución directa✓ En stock
$6.95 / unidad
Ver hoja de datos →ADS5103CPFBG4
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
ADS5102IPFBR
✅ Sustitución directa✓ En stock
$5.05 / unidad
Ver hoja de datos →ADS5102IPFBR
✅ Sustitución directa✓ En stock
$5.05 / unidad
Ver hoja de datos →ADS5103CPFBR Valores máximos y características eléctricas
| Resolución | 10 bit |
| Frecuencia de muestreo | 40 MSPS |
| Number of Input Channels | 1 (differential) |
| Input Type | Differential |
| Architecture | Pipelined |
| Data Interface | Parallel (CMOS) |
| Analog Supply Voltage | 1.8 V |
| Digital Supply Voltage | 1.8 V (3.3 V tolerant I/O) |
| Reference Type | Internal (external optional) |
| Configuration | S/H-ADC |
| Número de pines | 48 |
| Encapsulado | TQFP-48 (PFB) |
| Tipo de montaje | Surface Mount |
| Operating Temperature Grade | Commercial |
| Power-Down Pin | Yes |
| Estado RoHS | Compliant |
Configuración de pines de ADS5103CPFBR
| Pin 1 | AVDD — Analog supply (1.8 V) |
| Pin 2 | AVSS — Analog ground |
| Pin 3 | IN+ — Differential analog input (positive) |
| Pin 4 | IN- — Differential analog input (negative) |
| Pin 5 | VREF — Reference voltage (internal/external) |
| Pin 6 | REFT — Reference top (decoupling) |
| Pin 7 | REFB — Reference bottom (decoupling) |
| Pin 8 | AVSS — Analog ground |
| Pin 9 | AVDD — Analog supply (1.8 V) |
| Pin 10 | AVSS — Analog ground |
| Pin 11 | PD — Power-down input (active high) |
| Pin 12 | CLK — Clock input |
| Pin 13 | CLK — Complementary clock input |
| Pin 14 | DVDD — Digital supply (1.8 V) |
| Pin 15 | DVSS — Digital ground |
| Pin 16 | D0 — Data output bit 0 (LSB) |
| Pin 17 | D1 — Data output bit 1 |
| Pin 18 | D2 — Data output bit 2 |
| Pin 19 | D3 — Data output bit 3 |
| Pin 20 | D4 — Data output bit 4 |
| Pin 21 | D5 — Data output bit 5 |
| Pin 22 | D6 — Data output bit 6 |
| Pin 23 | D7 — Data output bit 7 |
| Pin 24 | D8 — Data output bit 8 |
| Pin 25 | D9 — Data output bit 9 (MSB) |
| Pin 26 | DVDD — Digital supply (1.8 V) |
| Pin 27 | DVSS — Digital ground |
| Pin 28 | NC — Not connected |
| Pin 29 | NC — Not connected |
| Pin 30 | AVSS — Analog ground |
| Pin 31 | AVDD — Analog supply (1.8 V) |
| Pin 32 | AVSS — Analog ground |
| Pin 33 | AVSS — Analog ground |
| Pin 34 | AVDD — Analog supply (1.8 V) |
| Pin 35 | AVSS — Analog ground |
| Pin 36 | AVDD — Analog supply (1.8 V) |
| Pin 37 | AVSS — Analog ground |
| Pin 38 | AVDD — Analog supply (1.8 V) |
| Pin 39 | NC — Not connected |
| Pin 40 | AVSS — Analog ground |
| Pin 41 | AVDD — Analog supply (1.8 V) |
| Pin 42 | AVSS — Analog ground |
| Pin 43 | AVDD — Analog supply (1.8 V) |
| Pin 44 | AVSS — Analog ground |
| Pin 45 | NC — Not connected |
| Pin 46 | AVSS — Analog ground |
| Pin 47 | AVDD — Analog supply (1.8 V) |
| Pin 48 | AVSS — Analog ground |
Aplicaciones típicas
ADS5103CPFBR es adecuado para 6 aplicacións: Digital Camera / Camcorder Imaging Front-End, Video Frame Grabber / Surveillance DVR, Portable Test and Measurement Equipment, IF / Baseband Digitizer in Software-Defined Radio, Barcode and Document Scanner, Industrial Process Control Data Acquisition.
Digital Camera / Camcorder Imaging Front-End
The ADS5103CPFBR is well matched to digital still camera and camcorder imaging front-ends, where its 10-bit resolution and 40 MSPS throughput are sufficient to digitize a 27 MHz progressive-scan CCD or CMOS sensor output. The 1.8 V analog and digital supplies reduce power budget, and the differential input rejects common-mode noise from the analog front-end buffer. The 3.3 V-tolerant CMOS outputs connect directly to an image DSP or FPGA without level shifters, simplifying board layout.
Recomendado
Video Frame Grabber / Surveillance DVR
The ADS5103CPFBR fits video frame-grabber and DVR front-ends where composite or component video (up to about 18 MHz analog bandwidth) is sampled at 27 MSPS oversampled. The pipelined architecture delivers 40 MSPS throughput, providing 4:3 oversampling of standard NTSC/PAL video. The 1.8 V internal reference simplifies analog front-end design, while the integrated sample-and-hold eases timing closure. The TQFP-48 (PFB) footprint is compact enough for half-height PCI cards.
Recomendado
Portable Test and Measurement Equipment
In portable oscilloscopes, spectrum analyzers, and handheld data-acquisition modules, the ADS5103CPFBR delivers 10-bit resolution at 40 MSPS, which is adequate for digitizing signals up to about 18 MHz analog bandwidth per Nyquist. The hardware power-down pin enables duty-cycled operation to extend battery life, and the 1.8 V core supply minimizes thermal dissipation in sealed enclosures. The differential input accepts signals from a low-noise analog front-end amplifier chain.
Recomendado
IF / Baseband Digitizer in Software-Defined Radio
The ADS5103CPFBR can serve as an IF or baseband digitizer in narrowband software-defined radio receivers, where its 40 MSPS sample rate and 1.8 V analog supply are well matched to low-IF signals up to 18 MHz. The differential input rejects common-mode noise from the mixer and balun stages, and the internal reference simplifies LO-leakage calibration. The 3.3 V-tolerant digital outputs interface directly to a Spartan-6 or Cyclone-IV FPGA for digital downconversion and demodulation.
Recomendado
Barcode and Document Scanner
The ADS5103CPFBR provides the throughput and resolution needed for line-scan barcode imagers and high-speed document scanners, where a 1D or 2D imager is sampled at 30-40 MHz to maintain scan-rate accuracy. The 10-bit grayscale resolution captures subtle contrast variations, and the small TQFP-48 (PFB) package allows the digitizer to sit adjacent to the sensor analog front-end. The internal reference and 1.8 V supply reduce overall BOM and power consumption.
Recomendado
Industrial Process Control Data Acquisition
In industrial process control and machine-vision data acquisition modules, the ADS5103CPFBR serves as a high-speed, low-power digitizer for transducer arrays, vibration sensors, and machine-vision cameras. Its 10-bit resolution is sufficient for 1% accuracy measurement systems, and the 40 MSPS throughput handles multi-channel time-interleaved sampling. The commercial temperature grade suits factory-floor enclosures with controlled climate.
Recomendado
Resumen de productos recomendados
Datos de referencia de ingeniería para ADS5103CPFBR — comparación, orientación de diseño e información de cumplimiento.
Guía de selección
Comparación con alternativas
| Parámetro | Este producto | ADS5103CPFB | ADS5103CPFBG4 | ADS5102IPFBR | ADS5102IPFB |
|---|---|---|---|---|---|
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Package | TQFP-48 (PFB) | TQFP-48 (PFB) - same | TQFP-48 (PFB) - same | TQFP-48 (PFB) - same | TQFP-48 (PFB) - same |
| Resolution | 10 bit | 10 bit | 10 bit | 10 bit | 10 bit |
| Sampling Rate | 40 MSPS | 40 MSPS | 40 MSPS | 65 MSPS (+62.5%) | 65 MSPS (+62.5%) |
| Input Channels | 1 differential | 1 differential | 1 differential | 1 differential | 1 differential |
| Analog Supply | 1.8 V | 1.8 V | 1.8 V | 1.8 V | 1.8 V |
| Reference Type | Internal (ext optional) | Internal (ext optional) | Internal (ext optional) | Internal (ext optional) | Internal (ext optional) |
| Data Interface | Parallel CMOS | Parallel CMOS | Parallel CMOS | Parallel CMOS | Parallel CMOS |
| Lifecycle Status | Obsolete | Obsolete | Obsolete | Active (per Site MPN list) | Obsolete |
| Unit Price (qty 1, USD) | 7.20 | 7.10 | 7.30 | 8.50 | 8.40 |
Diferenciadores clave
- Pin-compatible 65 MSPS speed-upgrade path (frente a ADS5102IPFBR)
- Internal reference reduces BOM (frente a ADS5103CPFB)
- Differential input with 3.3 V-tolerant digital outputs (frente a ADS5103CPFBG4)
Notas de diseño
The ADS5103CPFBR requires a clean, low-noise 1.8 V supply on AVDD and DVDD. Estimated: at 40 MSPS and 1.8 V, the analog supply current is approximately 30-40 mA and the digital current 10-20 mA, giving total power around 70-90 mW. Use an LDO such as TPS7A4701 for AVDD to minimize reference noise coupling, and place a 0.1 uF X7R ceramic bypass within 2 mm of each AVDD pin, plus a 10 uF bulk capacitor on each supply rail.
Use a 4-layer PCB with a dedicated analog ground plane tied to a single star point near the ADC. Separate analog and digital ground planes and stitch them only beneath the ADC at the AVSS/DVSS pin row. Keep the analog input traces (IN+, IN-) length-matched and 50-ohm controlled-impedance; route them away from clock and digital output bus lines. Place input coupling capacitors within 2 mm of the IN+ and IN- pins to minimize parasitic inductance.
Avoid driving the analog inputs below AVSS or above AVDD; the differential input structure of the ADS5103CPFBR requires the common-mode voltage to be biased near AVDD/2 using an external resistor network when AC-coupled. Estimated: at 40 MSPS, clock jitter should remain below 5 ps RMS to preserve 10-bit SNR at 18 MHz input. Do not tie unused digital outputs (D0-D9) to logic high; leave them floating or routed to a defined level per the datasheet.
Route the parallel digital output bus as a controlled-impedance group with 33-ohm series termination at the ADC end to damp reflections at the FPGA/ASIC receiver. Keep the digital output bus short (<50 mm) and use inner PCB layers with adjacent ground reference planes for impedance control. Use separate analog and digital via farms; do not share analog supply and digital output vias on the same net to avoid supply coupling.
Información de cumplimiento
Per TI product page, ADS5103 family is RoHS compliant and lead-free. The commercial temperature grade is not AEC-Q100 qualified - choose an industrial-grade or AEC-Q100 ADC for automotive or extended-temperature applications. Lifecycle status is obsolete per some distributor listings; verify with TI before committing to volume production.
