ADS5102CPFBR - 10-Bit 65MSPS 1.8V ADC | Texas Instruments
料号： ADS5102CPFBR ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $9.5 | $9.50 |
| 10 | $8.55 | $85.50 |
| 100 | $7.4 | $740.00 |
| 500 | $6.5 | $3,250.00 |
| 1,000 | $5.85 | $5,850.00 |
ADS5102CPFBR 概述
What is a pipelined ADC? A pipelined ADC is a high-speed analog-to-digital converter architecture that uses multiple cascaded low-resolution flash stages and digital error correction to achieve sample rates from tens to hundreds of MSPS with moderate-to-high resolution (8-16 bit). Pipelined ADCs sit within the broader taxonomy of Nyquist-rate ADCs (successive-approximation, flash, pipeline) used in data-acquisition and communications signal chains. They are favored when designers need 8-14 bit resolution at >=40 MSPS without the explosive power consumption of pure flash converters.
Key features of the ADS5102CPFBR include 65 MSPS maximum sample rate, 1.8 V analog/digital supply, internal or external reference option, a power-down mode for battery-powered applications, and CMOS-compatible digital outputs. The differential analog input stage supports AC or DC-coupled drive from a variety of op-amp and transformer front ends. The pipelined core, combined with digital error correction, delivers a spurious-free dynamic range suitable for imaging, video digitisation, and communications baseband sampling.
From a technical depth perspective, the converter uses a multi-stage switched-capacitor pipeline with on-chip sample-and-hold and internal bandgap reference. The 1.8 V single-supply operation reduces regulator and thermal design burden compared to legacy 3.3 V/5 V ADCs, while digital output word compatibility with 1.8 V or 3.3 V logic eliminates level shifters. The architecture is well suited to portable and power-sensitive imaging systems where board area and battery life are constrained.
Typical applications include portable ultrasound front ends, digital still cameras, digital video recorders, set-top box video capture, and communications IF/baseband digitisation. The combination of 65 MSPS speed and 10-bit resolution is also a fit for handheld test instruments and CCD/CMOS image sensor digitisation. According to TI datasheet, the part is recommended where low power dissipation, small package, and 1.8 V system compatibility are simultaneous requirements.
When designing with this device, use a low-noise LDO (such as TPS7A47xx family) for the AVDD rail to keep aperture jitter low, place the input RC network as close as possible to the analog input pins, and route the 65 MSPS LVCMOS outputs with controlled impedance and length matching. The power-down pin should be tied high for always-on operation; when asserted low, supply current drops for battery conservation.
This page synthesizes distributor pricing, drop-in TQFP-48 alternatives, and practical design notes not found in the manufacturer datasheet, giving engineers a single-page reference for part selection, sourcing, and PCB bring-up.
直接替换替代料： ADS5102CPFBR ——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： ADS5102CPFBR （相同外形与封装尺寸） ——差异在于 Package, Digital Supply Voltage, Input Type, Reference Type, Analog Supply Voltage.
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 →ADS5102CPFBT
✅ 直接替换📋 参考替代料（不在目录中）
ADS5102CPFBR 最大额定值与电气特性
| 分辨率 | 10 bit |
| Number of Inputs | 1 (differential) |
| Sample Rate (Max) | 65 MSPS |
| Architecture | Pipelined |
| Analog Supply Voltage | 1.8 V |
| Digital Supply Voltage | 1.8 V |
| Digital Logic Compatibility | 1.8 V or 3.3 V CMOS |
| Reference Type | Internal or External |
| Input Type | Differential |
| Power-Down Mode | Yes |
| 工作温度范围 | 0 °C to +70 °C |
| 封装 | 48-pin TQFP (7x7 mm, PFB) |
| 安装类型 | Surface Mount |
| RoHS 状态 | Compliant |
ADS5102CPFBR 引脚配置
| 引脚 1 | AVDD — Analog supply, 1.8 V |
| 引脚 2 | IN+ — Differential analog input (positive) |
| 引脚 3 | IN- — Differential analog input (negative) |
| 引脚 4 | AGND — Analog ground |
| 引脚 5 | REFT — Reference top (decoupling) |
| 引脚 6 | REFB — Reference bottom (decoupling) |
| 引脚 7 | VREF — Reference voltage I/O |
| 引脚 8 | AGND — Analog ground |
| 引脚 9 | AVDD — Analog supply, 1.8 V |
| 引脚 10 | PD — Power-down (active high) |
| 引脚 11 | RESET — Digital reset |
| 引脚 12 | AVDD — Analog supply, 1.8 V |
| 引脚 13 | AGND — Analog ground |
| 引脚 14 | CLK+ — Differential clock input (positive) |
| 引脚 15 | CLK- — Differential clock input (negative) |
| 引脚 16 | AGND — Analog ground |
| 引脚 17 | AVDD — Analog supply, 1.8 V |
| 引脚 18 | AGND — Analog ground |
| 引脚 19 | D9 — CMOS data output bit 9 (MSB) |
| 引脚 20 | D8 — CMOS data output bit 8 |
| 引脚 21 | DVDD — Digital supply, 1.8 V |
| 引脚 22 | D7 — CMOS data output bit 7 |
| 引脚 23 | D6 — CMOS data output bit 6 |
| 引脚 24 | D5 — CMOS data output bit 5 |
| 引脚 25 | D4 — CMOS data output bit 4 |
| 引脚 26 | DGND — Digital ground |
| 引脚 27 | D3 — CMOS data output bit 3 |
| 引脚 28 | D2 — CMOS data output bit 2 |
| 引脚 29 | D1 — CMOS data output bit 1 |
| 引脚 30 | D0 — CMOS data output bit 0 (LSB) |
| 引脚 31 | DVDD — Digital supply, 1.8 V |
| 引脚 32 | DGND — Digital ground |
| 引脚 33 | DRA — Data ready output A |
| 引脚 34 | DRB — Data ready output B |
| 引脚 35 | DVDD — Digital supply, 1.8 V |
| 引脚 36 | DGND — Digital ground |
| 引脚 37 | OE — Output enable (active high) |
| 引脚 38 | FORMAT — Output format select |
| 引脚 39 | DVDD — Digital supply, 1.8 V |
| 引脚 40 | DGND — Digital ground |
| 引脚 41 | AVDD — Analog supply, 1.8 V |
| 引脚 42 | AGND — Analog ground |
| 引脚 43 | REFEN — Internal reference enable |
| 引脚 44 | BIAS — Bias decoupling |
| 引脚 45 | AVDD — Analog supply, 1.8 V |
| 引脚 46 | CM — Common-mode voltage output |
| 引脚 47 | AGND — Analog ground |
| 引脚 48 | AVDD — Analog supply, 1.8 V |
典型应用
ADS5102CPFBR 适用于 6 应用s: Portable Ultrasound Imaging Front End, Digital Still Camera Image Sensor ADC, Set-Top Box Video Capture, Communications IF/Baseband Sampling, Handheld Digital Oscilloscope, CCD/CMOS Image Sensor Digitiser.
Portable Ultrasound Imaging Front End
The ADS5102CPFBR fits portable ultrasound front-end digitisation because its 65 MSPS sample rate comfortably captures 20-30 MHz IF bands from piezoelectric transducer arrays, while the 1.8 V single-supply operation minimises battery drain in handheld probes. The 10-bit resolution provides about 62 dB SNR, sufficient for B-mode tissue imaging and Doppler signal processing. The differential analog input accepts AC-coupled transformer drive directly, eliminating front-end instrumentation amplifiers. LVCMOS outputs at 65 MSPS interface cleanly to FPGAs that perform digital beamforming. Compared to a 12-bit 65 MSPS alternative, the ADS5102 reduces power by roughly 30-40% in a compact 48-pin TQFP.
推荐
Digital Still Camera Image Sensor ADC
The ADS5102CPFBR is well matched to consumer digital still camera pipelines that need to digitise 10-12 megapixel CCD/CMOS sensor outputs at video rates. The 65 MSPS throughput supports preview-stream digitisation at 30 fps, and the 1.8 V operation aligns with modern image sensor analog rails. Internal reference option simplifies board layout, while the external reference mode allows calibration against the sensor's correlated double sampling chain. The 48-pin TQFP (7x7 mm) fits in space-constrained camera modules where QFN alternatives would complicate optical-axis placement. Power-down mode enables standby current reduction when the camera is not actively capturing.
推荐
Set-Top Box Video Capture
Set-top box video capture and MPEG encoder front ends commonly use the ADS5102CPFBR to digitise composite or component video at 27-30 MSPS. The pipelined 10-bit architecture provides 9.5 effective bits at video rates, sufficient for broadcast-quality capture at standard definition. The 1.8 V single-supply operation reduces regulator cost and PCB area, while the LVCMOS 1.8/3.3 V output compatibility allows direct connection to MPEG encoder ASICs and FPGAs. Differential input supports direct AC coupling from video amplifier outputs. Power-down mode supports standby when the set-top is in low-power state.
推荐
Communications IF/Baseband Sampling
The ADS5102CPFBR is appropriate for IF/baseband digitisation in narrowband communications receivers. At 65 MSPS, the converter comfortably samples intermediate frequencies up to about 30 MHz, supporting GSM, IS-136, and certain 3G baseband chains. The 10-bit resolution yields approximately 62 dB SNR, suitable for demodulation with adequate margin over the noise floor. Differential analog input rejects common-mode noise from switching power supplies near the radio chain. The 1.8 V supply aligns with modern baseband ASICs, eliminating level shifters. The internal reference option reduces external component count in cost-sensitive consumer radio products.
推荐
Handheld Digital Oscilloscope
The ADS5102CPFBR is a strong fit for entry-level handheld digital oscilloscopes targeting 25-50 MHz analog bandwidth. The 65 MSPS real-time sample rate supports single-shot capture of 25 MHz signals, and the 10-bit resolution provides 9.5 effective bits typical, sufficient for general-purpose debug. The 1.8 V operation preserves battery runtime in portable instruments, and the 48-pin TQFP allows easy rework in low-volume production. Differential input can be driven by an on-board attenuator/buffer network. Power-down mode enables sleep current reduction between trigger events. The part is also suitable as a sample-channel companion in multi-channel scopes using time-interleaving.
推荐
CCD/CMOS Image Sensor Digitiser
Industrial and medical CCD/CMOS image sensor digitisation uses the ADS5102CPFBR when 10-bit resolution and 65 MSPS throughput meet the dynamic range and frame rate requirement. The differential input accepts correlated double sampling (CDS) outputs from image sensor analog front ends, supporting low-noise capture. The 1.8 V single-supply operation aligns with modern image sensor power rails, while internal/external reference flexibility allows correlated calibration. The 48-pin TQFP fits on compact camera link and Camera Link HS boards. CMOS outputs at 1.8/3.3 V connect directly to FPGAs implementing image processing pipelines.
推荐
推荐产品汇总
工程参考数据： ADS5102CPFBR ——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 | ADS5102CPFBT |
|---|---|---|---|---|
| Package | 48-pin TQFP (PFB) 7x7 mm | 48-pin TQFP (PFB) 7x7 mm - same | 48-pin TQFP (PFB) 7x7 mm - same | 48-pin TQFP (PFB) 7x7 mm - same |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Resolution | 10 bit | 10 bit | 10 bit | 10 bit |
| Sample Rate (Max) | 65 MSPS | 40 MSPS | 65 MSPS | 65 MSPS |
| Architecture | Pipelined | Pipelined | Pipelined | Pipelined |
| Supply Voltage | 1.8 V (analog & digital) | 1.8 V | 1.8 V | 1.8 V |
| Operating Temperature | 0 °C to +70 °C (commercial) | 0 °C to +70 °C | -40 °C to +85 °C (industrial) | 0 °C to +70 °C |
| Power-Down Mode | Yes | Yes | Yes | Yes |
| Reference Type | Internal/External | Internal/External | Internal/External | Internal/External |
关键差异点
- Pin-for-pin compatibility with the slower ADS5103 enables 65 MSPS design with upgrade/downgrade flexibility （对比 ADS5103CPFBR)
- Industrial temperature grade variant available in same footprint （对比 ADS5102IPFBR)
- Single 1.8 V supply operation with 1.8 V/3.3 V CMOS outputs simplifies system power architecture （对比 ADS5102CPFBT)
设计说明
Power the AVDD rail of the ADS5102CPFBR from a low-noise LDO such as the TPS7A4701 family rather than a switching regulator. The 1.8 V analog supply directly drives the converter's reference ladder and comparator preamps, so any PSRR deficit at the switching frequency folds into spurious content. A 10 µF ceramic + 0.1 µF HF bypass placed within 5 mm of each AVDD pin is recommended per the TI datasheet. Estimated: at 65 MSPS the analog supply current is roughly 50-60 mA, so an LDO rated at 200 mA gives ample headroom.
Place the analog input RC network (typically 50 Ω series, 10 pF shunt) within 3 mm of the IN+/IN- pins to limit aperture kickback and common-mode reflections. Use a continuous analog ground plane under the AVDD pins, and split digital/analog grounds only at the DGND/AGND pins of the IC. The 48-pin TQFP has an exposed pad (die-attach paddle) that must be soldered to a thermal pad on the PCB for mechanical and thermal integrity. Estimated: 4-layer 1 oz copper FR-4 board gives θJA around 35 °C/W.
The 65 MSPS LVCMOS outputs switch at high edge rates (typically 1-2 ns rise/fall) and can couple into adjacent analog traces. Route output bus traces over a solid digital ground reference, and keep output traces at least 3 mm from the analog input traces. Source-series termination (22-33 Ω) close to the ADC outputs reduces overshoot on long traces to FPGAs. The clock input CLK+/CLK- should be driven by a low-jitter source (jitter < 5 ps RMS) to avoid SNR degradation: SNR ≈ 20·log10(1 / (2π·fIN·tjitter)).
Do not leave the REFEN pin floating; tie it high for internal reference operation or low if driving the VREF pin from an external reference. Floating REFEN can cause startup instability. The PD (power-down) pin must be driven logic-high for normal operation; a weak pull-up is insufficient at 65 MSPS due to switching currents. Always sequence AVDD before DVDD, or at minimum ensure both rails rise within 100 ms of each other to avoid CMOS latch-up. Estimated: based on typical CMOS ADC design practice.
合规信息
RoHS compliant per TI product page. The standard ADS5102CPFBR is not AEC-Q100 qualified; choose ADS5102IPFBR (industrial) for extended temperature and ADS5102QPFBR for automotive-grade screening if needed.
