ADS5103CPFBR - 10-Bit 40MSPS ADC w/ Int Ref | Texas Instruments
MPN: ADS5103CPFBR ✗ Cuối đờiADS5103CPFBR Tóm tắt
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.
Bộ thay thế dễ dàng lắp đặt cho ADS5103CPFBR — cùng gói, chân-to-chân tương thích. Các bộ phận yêu cầu hàn PCB bị loại trừ.
Các biến thể trong loạt này
Các mẫu cùng loạt có thể lắp đặt dễ dàng tương thích với ADS5103CPFBR (cùng hình factor và footprint) — khác nhau ở Package, Input Type, Reference, Digital Supply Voltage, Operating Temperature.
ADS5103CPFB
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →ADS5103CPFBG4
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
ADS5102IPFBR
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →ADS5102IPFBR
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →ADS5103CPFBR Tỷ lệ tối đa & tính chất điện
| Độ phân giải | 10 bit |
| Tỷ lệ lấy mẫu | 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 |
| Số lượng chân | 48 |
| Hộp | TQFP-48 (PFB) |
| Kiểu lắp đặt | Surface Mount |
| Operating Temperature Grade | Commercial |
| Power-Down Pin | Yes |
| Trạng thái RoHS | Compliant |
Cấu hình chân ADS5103CPFBR
| Chân 1 | AVDD — Analog supply (1.8 V) |
| Chân 2 | AVSS — Analog ground |
| Chân 3 | IN+ — Differential analog input (positive) |
| Chân 4 | IN- — Differential analog input (negative) |
| Chân 5 | VREF — Reference voltage (internal/external) |
| Chân 6 | REFT — Reference top (decoupling) |
| Chân 7 | REFB — Reference bottom (decoupling) |
| Chân 8 | AVSS — Analog ground |
| Chân 9 | AVDD — Analog supply (1.8 V) |
| Chân 10 | AVSS — Analog ground |
| Chân 11 | PD — Power-down input (active high) |
| Chân 12 | CLK — Clock input |
| Chân 13 | CLK — Complementary clock input |
| Chân 14 | DVDD — Digital supply (1.8 V) |
| Chân 15 | DVSS — Digital ground |
| Chân 16 | D0 — Data output bit 0 (LSB) |
| Chân 17 | D1 — Data output bit 1 |
| Chân 18 | D2 — Data output bit 2 |
| Chân 19 | D3 — Data output bit 3 |
| Chân 20 | D4 — Data output bit 4 |
| Chân 21 | D5 — Data output bit 5 |
| Chân 22 | D6 — Data output bit 6 |
| Chân 23 | D7 — Data output bit 7 |
| Chân 24 | D8 — Data output bit 8 |
| Chân 25 | D9 — Data output bit 9 (MSB) |
| Chân 26 | DVDD — Digital supply (1.8 V) |
| Chân 27 | DVSS — Digital ground |
| Chân 28 | NC — Not connected |
| Chân 29 | NC — Not connected |
| Chân 30 | AVSS — Analog ground |
| Chân 31 | AVDD — Analog supply (1.8 V) |
| Chân 32 | AVSS — Analog ground |
| Chân 33 | AVSS — Analog ground |
| Chân 34 | AVDD — Analog supply (1.8 V) |
| Chân 35 | AVSS — Analog ground |
| Chân 36 | AVDD — Analog supply (1.8 V) |
| Chân 37 | AVSS — Analog ground |
| Chân 38 | AVDD — Analog supply (1.8 V) |
| Chân 39 | NC — Not connected |
| Chân 40 | AVSS — Analog ground |
| Chân 41 | AVDD — Analog supply (1.8 V) |
| Chân 42 | AVSS — Analog ground |
| Chân 43 | AVDD — Analog supply (1.8 V) |
| Chân 44 | AVSS — Analog ground |
| Chân 45 | NC — Not connected |
| Chân 46 | AVSS — Analog ground |
| Chân 47 | AVDD — Analog supply (1.8 V) |
| Chân 48 | AVSS — Analog ground |
Ứng dụng tiêu biểu
ADS5103CPFBR phù hợp cho 6 Áp dụngs: 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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho ADS5103CPFBR — so sánh, hướng dẫn thiết kế và thông tin tuân thủ.
Hướng dẫn chọn lựa
So sánh với các sản phẩm thay thế
| Tham số | Sản phẩm này | 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 |
Bảo phân biệt quan trọng
- Pin-compatible 65 MSPS speed-upgrade path (vsADS5102IPFBR)
- Internal reference reduces BOM (vsADS5103CPFB)
- Differential input with 3.3 V-tolerant digital outputs (vsADS5103CPFBG4)
Ghi chú thiết kế
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.
Thông tin tuân thủ
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.
