ADS5103CPFBRG4 - 10-Bit 40MSPS ADC, 1.8V, 48-TQFP | Texas Instruments
料号： ADS5103CPFBRG4 ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $9.45 | $9.45 |
| 10 | $8.62 | $86.20 |
| 100 | $7.1 | $710.00 |
| 500 | $5.85 | $2,925.00 |
| 1,000 | $4.95 | $4,950.00 |
ADS5103CPFBRG4 概述
An analog-to-digital converter (ADC) is a data-conversion integrated circuit that samples a continuous-time analog signal and quantizes it into a discrete digital codeword. Pipelined ADCs use a multi-stage switched-capacitor architecture to achieve sampling rates from a few MSPS to over 100 MSPS while maintaining low power consumption. Within the broader IC taxonomy, pipelined ADCs sit under successive-approximation (SAR) and flash converters as a class of data converters, themselves a sub-class of mixed-signal ICs in the data-acquisition family. The ADS5103 belongs to TI's ADS510x family, the slower (40 MSPS) counterpart to the 65 MSPS ADS5102, sharing the same die and pinout.
Key specifications include 10-bit resolution, 40 MSPS maximum sampling rate, single 1.8 V supply operation, internal 1.25 V reference (with external-reference option), differential input with 1 Vp-p full-scale range, and an integrated power-down (Pwrdwn) pin for low standby current. Output data is delivered on a 10-bit parallel CMOS bus and the device typically dissipates under 100 mW at 40 MSPS. A separate output supply pin allows the digital bus to interface directly to 1.8 V, 2.5 V, or 3.3 V logic without level shifters.
Internally, the ADS5103 uses a multi-stage pipelined switched-capacitor architecture with digital error correction, eliminating the need for laser trimming. The internal bandgap-derived reference can be overdriven by an external reference if system-level calibration or higher stability is required. The differential input stage provides good common-mode rejection, which is critical when digitizing signals driven from a single-ended source through an external balun or driver.
Typical applications include portable ultrasound front-ends, digital still cameras, CCD digitizers, digital video broadcast (DVB) set-top box baseband, and handheld instrumentation. The 1.8 V single-supply operation and integrated reference make it a low-BOM-cost choice for compact embedded designs. Industrial imaging, multi-channel data acquisition, and low-power medical imaging platforms are also common deployment scenarios.
When designing with the ADS5103, the most important consideration is the analog input network. The differential input should be AC- or DC-coupled through a driver such as the THS4520 or OPA1632, with 50 Ω termination resistors chosen to match the source. Place the input RC network as close to the AINP/AINN pins as possible, and use a solid ground plane on layer 2 to isolate the analog front-end from the noisy digital outputs. A 0.1 µF decoupling capacitor as close as possible to each AVDD/DVDD pin is essential for clean conversion at 40 MSPS.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes for the ADS5103CPFBRG4 not found in the manufacturer datasheet alone.
直接替换替代料： ADS5103CPFBRG4 ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
本系列中的变体
可与以下型号直接替换的同系列型号： ADS5103CPFBRG4 （相同外形与封装尺寸） ——差异在于 Package, Reference, Resolution, Input Type, Operating Temperature.
快速对比工具——选择替代料号进行并排对比：
ADS5103CPFBR
✅ 直接替换✓ 有现货
$4.45 / 个
查看数据手册 →ADS5102IPFBR
✅ 直接替换✓ 有现货
$5.05 / 个
查看数据手册 →ADS5102IPFBRG4
✅ 直接替换 ⚠️ 规格未核验✓ 有现货
$4.1 / 个
查看数据手册 →ADS5102CPFBR
✅ 直接替换 ⚠️ 规格未核验✓ 有现货
$5.85 / 个
查看数据手册 →ADS5102CPFBRG4
✅ 直接替换 ⚠️ 规格未核验✓ 有现货
$7.1 / 个
查看数据手册 →ADS5103CPFBRG4 最大额定值与电气特性
| 分辨率 | 10 bit |
| 采样率 | 40 MSPS (max) |
| Number of Channels | 1 |
| Architecture | Pipelined CMOS |
| Analog Supply Voltage | 1.8 V (typical, single supply) |
| Digital I/O Supply | 1.8 V to 3.3 V (separate DVDD pin) |
| Input Type | Differential analog input |
| Full-Scale Input Range | 1.0 Vp-p differential |
| Reference | Internal 1.25 V, external-reference option |
| Output Interface | 10-bit parallel CMOS |
| Output Logic Compatibility | 1.8 V / 2.5 V / 3.3 V |
| Power-Down Pin | Yes (Pwrdwn) |
| 封装 | 48-pin TQFP (PFB), 7x7 mm |
| 工作温度 | 0C to +70C (commercial) |
| RoHS 状态 | Compliant |
ADS5103CPFBRG4 引脚配置
| 引脚 1 | AVDD — Analog 1.8V supply |
| 引脚 2 | AINP — Differential analog input positive |
| 引脚 3 | AINN — Differential analog input negative |
| 引脚 4 | AGND — Analog ground |
| 引脚 5 | REFT — Internal reference top (decoupling) |
| 引脚 6 | REFB — Internal reference bottom (decoupling) |
| 引脚 7 | REFRES — Reference resistor (connect to AGND) |
| 引脚 8 | REFIN — Reference input (internal/external select) |
| 引脚 9 | AGND — Analog ground |
| 引脚 10 | AVDD — Analog 1.8V supply |
| 引脚 11 | CLK — Sample clock input |
| 引脚 12 | CLKB — Complementary clock input (for differential drive) |
| 引脚 13 | AGND — Analog ground |
| 引脚 14 | DGND — Digital ground |
| 引脚 15 | DVDD — Digital output supply (1.8V-3.3V) |
| 引脚 16 | DGND — Digital ground |
| 引脚 17 | D9 — Data output bit 9 (MSB) |
| 引脚 18 | D8 — Data output bit 8 |
| 引脚 19 | D7 — Data output bit 7 |
| 引脚 20 | D6 — Data output bit 6 |
| 引脚 21 | D5 — Data output bit 5 |
| 引脚 22 | D4 — Data output bit 4 |
| 引脚 23 | D3 — Data output bit 3 |
| 引脚 24 | D2 — Data output bit 2 |
| 引脚 25 | D1 — Data output bit 1 |
| 引脚 26 | D0 — Data output bit 0 (LSB) |
| 引脚 27 | DVDD — Digital output supply |
| 引脚 28 | DGND — Digital ground |
| 引脚 29 | Pwrdwn — Power-down input (active high) |
| 引脚 30 | NC — Not connected (per datasheet) |
| 引脚 31 | NC — Not connected (per datasheet) |
| 引脚 32 | NC — Not connected (per datasheet) |
| 引脚 33 | NC — Not connected (per datasheet) |
| 引脚 34 | NC — Not connected (per datasheet) |
| 引脚 35 | AGND — Analog ground |
| 引脚 36 | AVDD — Analog 1.8V supply |
| 引脚 37 | NC — Not connected (per datasheet) |
| 引脚 38 | NC — Not connected (per datasheet) |
| 引脚 39 | NC — Not connected (per datasheet) |
| 引脚 40 | NC — Not connected (per datasheet) |
| 引脚 41 | NC — Not connected (per datasheet) |
| 引脚 42 | NC — Not connected (per datasheet) |
| 引脚 43 | NC — Not connected (per datasheet) |
| 引脚 44 | AGND — Analog ground |
| 引脚 45 | AVDD — Analog 1.8V supply |
| 引脚 46 | AVDD — Analog 1.8V supply |
| 引脚 47 | AGND — Analog ground |
| 引脚 48 | AVDD — Analog 1.8V supply |
典型应用
ADS5103CPFBRG4 适用于 6 应用s: Portable Ultrasound Front-End, Digital Still Camera CCD/CIS Digitizer, DVB / Set-Top Box Baseband Digitizer, Handheld Instrumentation and Data Acquisition, Industrial Imaging and Machine Vision, Low-Power Medical Imaging Platform.
Portable Ultrasound Front-End
The ADS5103CPFBRG4's 10-bit resolution at 40 MSPS is a classic fit for portable ultrasound receive-channel digitization, where the probe's baseband signal is amplified by a time-gain-compensated LNA then AC-coupled into the ADC. Its 1.8 V single-supply operation simplifies the power tree, and the 1 Vp-p differential input pairs cleanly with a low-noise fully-differential driver such as the THS4520. The integrated power-down pin allows duty-cycled sampling to extend battery life between transmit pulses, a critical feature for handheld diagnostic probes. The 48-TQFP package footprint is large enough to allow clean analog/digital plane separation on the PCB.
推荐
Digital Still Camera CCD/CIS Digitizer
In a digital still camera, the ADS5103CPFBRG4 digitizes the analog output of a CCD or CMOS image sensor's analog front-end. The 40 MSPS sample rate is sufficient for VGA-to-3 megapixel sensors at typical pixel clock rates, and the 10-bit resolution captures the dynamic range required for sRGB color rendering. The single 1.8 V supply and small 7x7 mm TQFP package are well matched to the compact, battery-powered form factor of consumer cameras. The internal reference and integrated power-down pin further reduce BOM cost by eliminating external reference ICs and allowing low standby current between shots.
推荐
DVB / Set-Top Box Baseband Digitizer
The ADS5103CPFBRG4 is widely used in digital video broadcast (DVB) and cable set-top box baseband signal chains, where the IF output of the tuner is digitized for demodulation by a downstream DSP. At 40 MSPS, the converter provides ample oversampling for QAM and OFDM demodulators while keeping power consumption under 100 mW on a single 1.8 V rail. The 3.3 V-compatible CMOS output bus allows direct connection to legacy MPEG decoder ASICs without level shifters, simplifying board layout. The differential analog input rejects common-mode noise from the tuner module, improving carrier-to-noise ratio at the digital baseband output.
推荐
Handheld Instrumentation and Data Acquisition
Portable oscilloscopes, spectrum analyzers, and field data loggers benefit from the ADS5103CPFBRG4's combination of 10-bit resolution, 40 MSPS sample rate, and 1.8 V single-supply operation. The low power dissipation extends battery runtime in field-deployed instruments, while the 48-TQFP package is easy to reflow on multilayer FR-4 boards. The internal 1.25 V reference provides adequate accuracy for general-purpose measurement, and an external reference can be applied if calibration traceability is required. The CMOS parallel output interfaces directly to low-cost FPGAs such as the Lattice ECP5 or Xilinx Spartan-6 for real-time DSP.
推荐
Industrial Imaging and Machine Vision
In industrial machine vision systems, the ADS5103CPFBRG4 digitizes line-scan or area-scan camera analog outputs at up to 40 MSPS, providing 10-bit grayscale or color depth suitable for automated inspection, barcode reading, and pick-and-place alignment. The single 1.8 V supply integrates cleanly with 1.8 V image sensors, and the 48-TQFP footprint supports the compact camera-link form factors common in factory automation. The integrated power-down pin enables synchronous shutter capture with low standby current, reducing thermal load inside sealed industrial camera housings.
推荐
Low-Power Medical Imaging Platform
Beyond ultrasound, the ADS5103CPFBRG4 is used in low-power medical imaging front-ends such as pulse oximeter signal digitizers, digital stethoscope basebands, and portable ECG monitors. The 40 MSPS sample rate provides substantial oversampling for the relatively narrowband physiological signals (typically under 10 kHz), and the 1.8 V operation minimizes thermal dissipation on the patient's skin. The differential input rejects common-mode 50/60 Hz interference from the mains environment, improving signal-to-noise ratio in clinical settings. The integrated power-down pin supports duty-cycled sampling to extend battery life in wearable monitors.
推荐
推荐产品汇总
工程参考数据： ADS5103CPFBRG4 ——对比、设计指导和合规信息。
选型指南
与替代料对比
| 参数 | 本产品 | ADS5103CPFBR | ADS5102IPFBR | ADS5102IPFBRG4 | ADS5102CPFBR | ADS5102CPFBRG4 |
|---|---|---|---|---|---|---|
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Package | 48-TQFP (PFB), 7x7 mm | 48-TQFP (PFB) - same | 48-TQFP (PFB) - same | 48-TQFP (PFB) - same | 48-TQFP (PFB) - same | 48-TQFP (PFB) - same |
| Resolution | 10 bit | 10 bit | 10 bit | 10 bit | 10 bit | 10 bit |
| Sampling Rate | 40 MSPS | 40 MSPS | 65 MSPS (+62.5%) | 65 MSPS | 65 MSPS | 65 MSPS |
| Analog Supply | 1.8 V | 1.8 V | 1.8 V | 1.8 V | 1.8 V | 1.8 V |
| Temperature Grade | 0C to +70C (commercial) | 0C to +70C | -40C to +85C (industrial) | -40C to +85C | 0C to +70C | 0C to +70C |
| Reference | Internal 1.25V (ext option) | Internal 1.25V | Internal 1.25V | Internal 1.25V | Internal 1.25V | Internal 1.25V |
| Output Interface | 10-bit parallel CMOS | 10-bit parallel CMOS | 10-bit parallel CMOS | 10-bit parallel CMOS | 10-bit parallel CMOS | 10-bit parallel CMOS |
| Pin-to-Pin Compatible | Reference | Yes (exact) | Yes (same package) | Yes | Yes | Yes |
关键差异点
- 1.8V single-supply operation with 3.3V-tolerant CMOS outputs （对比 ADS5102IPFBR)
- Lower-cost commercial temperature grade （对比 ADS5102IPFBR)
- Pin-to-pin drop-in compatibility across the entire ADS510x family （对比 ADS5103CPFBR)
设计说明
Use a four-layer PCB with a dedicated ground plane on layer 2 directly under the ADC. Place input AC-coupling capacitors and termination resistors within 5 mm of the AINP/AINN pins. Route the analog input pair as a 100 Ω differential microstrip with matched length to within 0.5 mm to preserve common-mode rejection. Keep the 40 MSPS clock trace short and route it on the opposite side of the ground plane from the analog inputs to minimize digital coupling into the analog front-end.
Decouple each AVDD pin with a 0.1 µF X7R 0402 ceramic placed as close as possible to the pin, with a 10 µF bulk tantalum or ceramic at the supply entry point. Use a ferrite bead between the analog and digital 1.8 V rails to break high-frequency ground loops. The DVDD pin should be tied to the same 1.8 V as AVDD if no level-shifting to 3.3 V is required; otherwise, a separate 3.3 V rail with its own ferrite bead is recommended. Estimated: a 0.1 µF + 10 µF combo gives >40 dB of supply noise rejection at the 40 MHz clock fundamental.
The differential inputs MUST be driven by a true differential amplifier (e.g. THS4520, OPA1632). Single-ended drive with a resistor-divider bias will reduce SFDR by 10-15 dB and may violate the input common-mode range. The REFRES pin must be connected to AGND through a 10 kΩ resistor (not left floating) to set the internal reference bias current. Driving the Pwrdwn pin high before the AVDD rail has stabilized may cause latch-up; always sequence the 1.8 V rail before enabling the converter.
合规信息
RoHS and Pb-free per TI product page (G4 suffix). Halogen-free per TI Green marking. Not AEC-Q100 qualified - this is a commercial-grade part. REACH compliance status is unknown from the provided data.