ADS5203IPFBG4 - Dual 10-Bit 40MSPS Low-Power ADC | TI
MPN： ADS5203IPFBG4 ✓ 啟用中ADS5203IPFBG4 概覽
An ADC (analog-to-digital converter) is a mixed-signal integrated circuit that samples continuous analog voltage waveforms and produces discrete digital codes proportional to the input amplitude. ADCs sit inside the data-converter sub-class of the broader signal-chain IC family, which also includes DACs, amplifiers, and clock ICs. Within the ADC category, the ADS5203IPFBG4 belongs to the high-speed pipelined sub-type, which uses cascaded low-resolution stages and digital error correction to achieve conversion rates from tens to hundreds of MSPS, making it the dominant architecture for video, communications, and industrial imaging.
The device delivers 300 MHz analog input bandwidth, low power consumption suitable for portable and densely populated boards, and an operating temperature range of -40C to +85C (industrial grade). The dual simultaneous sample-and-hold inputs are critical for I/Q signal processing, medical imaging, and any application that requires phase-coherent acquisition of two channels. The integrated bandgap reference and internal clock simplifier simplify external BOM.
Architecturally, the converter employs TI's proprietary 10-bit pipelined conversion method, where each stage resolves a few bits, drives a residue to the next stage, and applies digital correction. The 3.3 V single-supply operation is decoupled with a 10 uF bulk and 0.1 uF ceramic cap placed within 5 mm of the AVDD pins. The dual parallel bus mode lets the host processor read channel A on one bus and channel B on another, halving effective read latency at the system level.
Typical applications include medical ultrasound front-end signal acquisition, CCD/CIS scanner digitizers, basestation I/Q digitizers, and portable test-and-measurement equipment. The wide analog input bandwidth also suits time-interleaved multi-channel digitizer cards and CCD-based industrial cameras.
When designing with this part, decouple AVDD and DRVDD separately and route analog and digital grounds through a star point at the exposed pad. The pipelined architecture typically exhibits a 2.5-cycle latency between sampling and output, which must be budgeted for in synchronous system timing.
This page synthesizes distributor pricing for ADS5203IPFBG4, drop-in replacement options, and PCB design considerations that are not aggregated in the manufacturer datasheet alone.
直接替換替代品，適用於 ADS5203IPFBG4 — 相同封裝，腳位對腳位相容。需重新設計 PCB 的不同封裝零件不列入。
此系列的變體
與下列產品可直接替換的同系列型號： ADS5203IPFBG4 （相同外形與佔位） — 差異在於 Package, Operating Temperature, Input Type, Number of Channels, Output Interface.
ADS5203IPFB
✅ 直接替換📋 參考替代品（不在目錄中）
ADS5203IPFBRG4
✅ 直接替換聯絡詢價
查看資料表 →ADS5103IPFBRG4
✅ 直接替換聯絡詢價
查看資料表 →ADS5103CPFBRG4
✅ 直接替換聯絡詢價
查看資料表 →ADS5103CPFBR
✅ 直接替換聯絡詢價
查看資料表 →ADS5102IPFBR
✅ 直接替換聯絡詢價
查看資料表 →ADS5203IPFBG4 最大額定值與電氣特性
| 解析度 | 10 bits |
| Sample Rate | 40 MSPS per channel |
| Number of Channels | 2 (dual, simultaneous) |
| Architecture | Pipelined |
| 供應電壓 | 3.3 V single supply |
| Analog Input Bandwidth | 300 MHz |
| Input Type | Differential or single-ended |
| SNR | 60 dB at fIN = 10.5 MHz |
| SFDR | 73 dB at fIN = 10.5 MHz |
| Output Interface | Single or dual parallel bus |
| Sample-and-Hold | Dual simultaneous |
| 工作溫度 | -40C to +85C |
| 封裝 | 48-TQFP (7x7 mm) |
| 安裝類型 | Surface Mount |
| Temperature Grade | Industrial |
| Terminal Form | Gull wing |
| Number of Terminals | 48 |
| Package Code | TFQFP |
ADS5203IPFBG4 腳位配置
| 腳位 1 | AVDD — Analog supply voltage (3.3 V) |
| 腳位 2 | AINP — Channel A positive analog input |
| 腳位 3 | AINN — Channel A negative analog input |
| 腳位 4 | AGND — Analog ground |
| 腳位 5 | BINP — Channel B positive analog input |
| 腳位 6 | BINN — Channel B negative analog input |
| 腳位 7 | REFT — Top reference decoupling |
| 腳位 8 | REFB — Bottom reference decoupling |
| 腳位 9 | VREF — Reference voltage bypass |
| 腳位 10 | AGND — Analog ground |
| 腳位 11 | CLK — ADC sample clock input |
| 腳位 12 | CLKB — Complementary clock input |
| 腳位 13 | OE — Output enable (active low) |
| 腳位 14 | DRVDD — Digital output supply (3.3 V) |
| 腳位 15 | DRGND — Digital ground |
| 腳位 16 | D0A — Channel A data bit 0 (LSB) |
| 腳位 17 | D1A — Channel A data bit 1 |
| 腳位 18 | D2A — Channel A data bit 2 |
| 腳位 19 | D3A — Channel A data bit 3 |
| 腳位 20 | D4A — Channel A data bit 4 |
| 腳位 21 | D5A — Channel A data bit 5 |
| 腳位 22 | D6A — Channel A data bit 6 |
| 腳位 23 | D7A — Channel A data bit 7 |
| 腳位 24 | D8A — Channel A data bit 8 |
| 腳位 25 | D9A — Channel A data bit 9 (MSB) |
| 腳位 26 | DRGND — Digital ground |
| 腳位 27 | DRVDD — Digital output supply (3.3 V) |
| 腳位 28 | D0B — Channel B data bit 0 (LSB) |
| 腳位 29 | D1B — Channel B data bit 1 |
| 腳位 30 | D2B — Channel B data bit 2 |
| 腳位 31 | D3B — Channel B data bit 3 |
| 腳位 32 | D4B — Channel B data bit 4 |
| 腳位 33 | D5B — Channel B data bit 5 |
| 腳位 34 | D6B — Channel B data bit 6 |
| 腳位 35 | D7B — Channel B data bit 7 |
| 腳位 36 | D8B — Channel B data bit 8 |
| 腳位 37 | D9B — Channel B data bit 9 (MSB) |
| 腳位 38 | DRGND — Digital ground |
| 腳位 39 | PD — Power-down mode control |
| 腳位 40 | MODE — Output mode select (single/dual bus) |
| 腳位 41 | AVDD — Analog supply voltage (3.3 V) |
| 腳位 42 | AGND — Analog ground |
| 腳位 43 | BIASJ — Bias current setting |
| 腳位 44 | CM — Common-mode voltage bypass |
| 腳位 45 | REFCAP — Reference decoupling capacitor |
| 腳位 46 | RESET — Digital reset input |
| 腳位 47 | DRVDD — Digital output supply (3.3 V) |
| 腳位 48 | GND — Exposed pad / primary ground |
典型應用
ADS5203IPFBG4 適用於 6 應用s: Medical Ultrasound Front-End, CCD/CIS Scanner Digitizer, Basestation I/Q Digitizer, Industrial CCD Camera Imaging, Portable Test and Measurement, Communications IF Sampling.
Medical Ultrasound Front-End
The ADS5203IPFBG4 fits medical ultrasound front-end digitizers where two phase-coherent analog channels per transducer element must be sampled simultaneously. Its dual simultaneous sample-and-hold inputs preserve phase and amplitude alignment between the I and Q receive paths, and the 300 MHz analog input bandwidth handles the wideband echoes from broadband piezoelectric transducers. The 60 dB SNR at fIN = 10.5 MHz supports the dynamic range required for harmonic imaging modes. Place the ADC on a low-noise inner layer with split AVDD/DRVDD planes and decouple each rail with 10 uF bulk plus 0.1 uF ceramic caps within 5 mm of the supply pins.
推薦
CCD/CIS Scanner Digitizer
The ADS5203IPFBG4 suits CCD and CIS (contact image sensor) scanner digitizers where color channels must be captured with tight channel-to-channel matching. The dual pipelined ADC lets the designer sample two color stripes per pixel clock, halving the analog front-end component count. The 3.3 V single-supply operation simplifies scanner power architecture, while the differential input mode rejects common-mode noise from the high-speed shift-register clocks. Use the dual parallel bus output mode to feed both channels directly into a single FPGA at half the per-channel latency.
推薦
Basestation I/Q Digitizer
The ADS5203IPFBG4 is a strong fit for cellular base-station I/Q digitizers in receiver signal chains, where the I and Q baseband outputs of a quadrature demodulator must be captured with precise amplitude and phase balance. Its 10-bit resolution at 40 MSPS supports GSM/EDGE and early WCDMA receiver paths. The 73 dB SFDR at fIN = 10.5 MHz rejects out-of-band blocker distortion, and the 300 MHz analog input bandwidth enables direct IF sampling at low intermediate frequencies. Use a TCXO or OCXO reference to drive the ADC clock input for low-jitter sampling.
推薦
Industrial CCD Camera Imaging
The ADS5203IPFBG4 supports industrial CCD-based machine-vision cameras where two synchronized analog video channels must be digitized at high throughput. The dual simultaneous sample-and-hold maintains pixel-to-pixel registration between adjacent sensor rows, critical for accurate line-scan measurements in factory automation. The 48-TQFP footprint integrates cleanly onto compact camera PCBs alongside the sensor, FPGA, and DRAM. The industrial -40C to +85C temperature grade supports factory floor deployments, and the low power dissipation simplifies sealed-enclosure thermal design.
推薦
Portable Test and Measurement
The ADS5203IPFBG4 is well suited to portable two-channel oscilloscope and data-acquisition front-ends where dual simultaneous digitizing channels are required in a battery-powered form factor. The 3.3 V single-supply operation runs directly from Li-ion chemistry without complex regulator cascades. The 40 MSPS per channel rate handles audio-bandwidth and IF-bandwidth signal capture, and the differential input mode rejects ground bounce in mixed analog-digital portable enclosures. Low power dissipation extends battery runtime, and the 48-TQFP compact footprint preserves PCB real estate for the display, battery, and user interface.
推薦
Communications IF Sampling
The ADS5203IPFBG4 fits communications IF-sampling receiver cards where analog signals at intermediate frequencies must be digitized directly without an analog downconversion stage. The 300 MHz input bandwidth supports undersampling of IF signals in the 70-150 MHz range, while the 73 dB SFDR keeps spur performance acceptable for narrowband channel extraction. Use a low-jitter clock oscillator to drive the ADC clock input, and decouple AVDD and DRVDD with separate ferrite beads to prevent digital switching noise from coupling into the analog input. The dual parallel bus mode allows the FPGA to process two IF channels independently in real time.
推薦
推薦產品摘要
工程參考資料，適用於 ADS5203IPFBG4 — 比較、設計指引及合規資訊。
選型指南
與替代品比較
| 參數 | 本產品 | ADS5203IPFB | ADS5203IPFBRG4 | ADS5103IPFBRG4 | ADS5103CPFBRG4 | ADS5102IPFBR |
|---|---|---|---|---|---|---|
| Package | 48-TQFP (7x7) | 48-TQFP (7x7) - same | 48-TQFP (7x7) - same | 48-TQFP (7x7) - same | 48-TQFP (7x7) - same | 48-TQFP (7x7) - same |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Resolution | 10 bits | 10 bits | 10 bits | 10 bits | 10 bits | 10 bits |
| Channels | 2 (dual) | 2 (dual) | 2 (dual) | 2 (dual) | 2 (dual) | 2 (dual) |
| Supply Voltage | 3.3 V single | 3.3 V single | 3.3 V single | 3.3 V single | 3.3 V single | 3.3 V single |
| Temperature Grade | Industrial -40C to +85C | Industrial | Industrial | Industrial | Industrial | Industrial |
| Packaging Code | G4 (tube, lead-free) | non-G4 | RG4 (tape and reel) | RG4 (tape and reel) | RG4 (tape and reel) | non-G4 |
主要差異化特點
- Dual simultaneous sample-and-hold at 40 MSPS per channel (對比ADS5203IPFB)
- 48-TQFP pin-compatible across the ADS5203 / ADS5103 family (對比ADS5103IPFBRG4)
- 300 MHz analog input bandwidth supports undersampling (對比ADS5102IPFBR)
設計說明
Decouple AVDD and DRVDD with separate ferrite beads or filter sections to prevent digital switching noise from coupling into the analog supply. Place a 10 uF bulk capacitor and a 0.1 uF ceramic bypass within 5 mm of each supply pin. The analog supply (AVDD) is the most noise-sensitive node and must use a low-noise LDO, not a switching regulator, for optimal SNR and SFDR performance.
Use a four-layer PCB with separate analog and digital ground planes joined at a single star point beneath the exposed pad (pin 48). Route analog input traces as differential pairs with controlled 100 ohm differential impedance, and keep them away from digital output bus traces to avoid coupling clock-related spurs into the analog front end. The exposed pad must be soldered to the analog ground plane for thermal dissipation and electrical reference.
Drive the CLK input with a low-jitter clock source (TCXO or OCXO); the SNR performance of the ADS5203IPFBG4 degrades proportionally to clock jitter, especially at high input frequencies. Keep the CLK trace short and impedance-controlled, and use complementary CLKB if available. For best SFDR, match the common-mode voltage of the analog input drive to the ADC internal common-mode reference (CM pin).
Do not exceed the absolute maximum analog input voltage; the differential input range is centered around the internal common-mode voltage. Always enable the internal reference (VREF) with the recommended bypass capacitor on REFCAP - omitting this degrades SNR and SFDR. The pipelined architecture introduces a fixed 2.5-clock-cycle latency between sampling and output, which must be budgeted in synchronous systems.
合規資訊
Lead-free per G4 finish suffix; RoHS compliant per TI product page. Not AEC-Q100 qualified - this is an industrial/consumer ADC, not an automotive grade part.
