ADS6224IRGZR - 12-bit 105MSPS Dual ADC LVDS | Texas Instruments
MPN： ADS6224IRGZR ✓ 啟用中ADS6224IRGZR 概覽
An analog-to-digital converter (ADC) is a semiconductor device that converts continuous analog signals into discrete digital codes, enabling digital signal processing, storage, and transmission. High-speed ADCs sit at the boundary between the analog and digital domains and are critical for applications including communications infrastructure, medical imaging, defense electronics, and industrial test and measurement. The ADS6224 belongs to TI's high-speed ADC portfolio, where the LVDS (Low-Voltage Differential Signaling) interface family is preferred for low-noise, high-speed data transfer across PCB traces and into downstream FPGAs or ASICs.
Key specifications include a maximum sample rate of 125 MSPS (with the ADS6224IRGZR specifically rated for 105 MSPS), 12-bit resolution, 3.5 dB coarse gain, 6 dB programmable fine gain, dual simultaneous sampling, and a 48-VQFN (HVQCCN) package. Industrial temperature grade -40 °C to +85 °C operation is supported. The pipelined core architecture multiplies per-channel sample rate while preserving low-latency conversion, and the integrated gain stages simplify front-end signal conditioning for inputs that exceed the ADC's full-scale range.
The dual-channel simultaneous sampling and LVDS output make the ADS6224IRGZR well suited for communications baseband I/Q capture, ultrasound beamforming, and multi-channel instrumentation. The 105 MSPS per-channel rate supports IF sampling of signals in the tens of MHz and direct RF undersampling in some architectures. Programmable gain allows system designers to optimize dynamic range without external attenuators, and the LVDS output minimizes EMI by using differential signaling, which is essential in dense, multi-layer boards.
Typical applications include communications receivers (baseband I/Q digitizers), medical ultrasound imaging front-ends, industrial digitizers and oscilloscopes, radar signal processing, and defense electronic warfare systems. When designing with this ADC, ensure the LVDS data and clock traces are length-matched (typically within 5-10 mils) and routed with controlled 100-ohm differential impedance. Decouple AVDD and DVDD supplies separately and provide a clean low-jitter clock to the CLK input to preserve SNR.
This page synthesizes distributor pricing, drop-in same-package alternatives, and practical PCB/layout design notes that complement the manufacturer datasheet and help engineers shorten their selection and procurement cycle.
直接替換替代品，適用於 ADS6224IRGZR — 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： ADS6224IRGZR （相同外形與佔位） — 差異在於 Number of Channels, Analog Supply Voltage, Output Interface, Package, Programmable Fine Gain.
ADS6225IRGZR
✅ 直接替換聯絡詢價
查看資料表 →ADS6222IRGZR
✅ 直接替換📋 參考替代品（不在目錄中）
ADS6221IRGZR
✅ 直接替換📋 參考替代品（不在目錄中）
ADS6244IRGZRG4
✅ 直接替換📋 參考替代品（不在目錄中）
ADS6243IRGZRG4
✅ 直接替換📋 參考替代品（不在目錄中）
ADS6224IRGZR 最大額定值與電氣特性
| 解析度 | 12 bit |
| Number of Channels | 2 (dual, simultaneous sampling) |
| Sample Rate (ADS6224) | 105 MSPS per channel |
| Maximum Sample Rate (family) | 125 MSPS |
| Architecture | Pipelined |
| Input Type | Differential, analog |
| Output Interface | Serial LVDS (1-wire / 2-wire) |
| Coarse Gain | 3.5 dB |
| Programmable Fine Gain | 6 dB |
| Supply Voltage (Nominal) | 3.3 V |
| 封裝 | 48-VQFN (RGZ) 7x7 mm with exposed pad (HVQCCN) |
| 安裝類型 | Surface Mount |
| 工作溫度範圍 | -40 °C to +85 °C (industrial) |
| RoHS 狀態 | Compliant |
ADS6224IRGZR 腳位配置
| 腳位 1 | AVDD — Analog supply (3.3 V nominal) |
| 腳位 2 | INP_A |
| 腳位 3 | INN_A — Channel A negative differential analog input |
| 腳位 4 | AVDD — Analog supply |
| 腳位 5 | VCM_A — Channel A common-mode voltage bypass |
| 腳位 6 | AVSS — Analog ground |
| 腳位 7 | AVDD — Analog supply |
| 腳位 8 | INP_B — Channel B positive differential analog input |
| 腳位 9 | INN_B — Channel B negative differential analog input |
| 腳位 10 | AVDD — Analog supply |
| 腳位 11 | VCM_B — Channel B common-mode voltage bypass |
| 腳位 12 | AVSS — Analog ground |
| 腳位 13 | CLKP — Differential clock input, positive |
| 腳位 14 | CLKN — Differential clock input, negative |
| 腳位 15 | AVSS — Analog ground |
| 腳位 16 | SEN — Serial interface enable |
| 腳位 17 | SCLK — Serial interface clock |
| 腳位 18 | SDATA — Serial interface data |
| 腳位 19 | RESET — Hardware reset (active logic per datasheet) |
| 腳位 20 | PDN — Power-down (active logic per datasheet) |
| 腳位 21 | AVSS — Analog ground |
| 腳位 22 | AVDD — Analog supply |
| 腳位 23 | VREF — Voltage reference bypass |
| 腳位 24 | FS_ADJ |
| 腳位 25 | AVSS — Analog ground |
| 腳位 26 | AVDD — Analog supply |
| 腳位 27 | DVDD — Digital supply |
| 腳位 28 | DGND — Digital ground |
| 腳位 29 | LVDS_OUT_AP — LVDS channel A data, positive |
| 腳位 30 | LVDS_OUT_AN — LVDS channel A data, negative |
| 腳位 31 | LVDS_OUT_BP — LVDS channel B data, positive |
| 腳位 32 | LVDS_OUT_BN — LVDS channel B data, negative |
| 腳位 33 | LVDS_CLKP — LVDS bit clock, positive |
| 腳位 34 | LVDS_CLKN — LVDS bit clock, negative |
| 腳位 35 | LVDS_FRMP — LVDS frame clock, positive |
| 腳位 36 | LVDS_FRMN — LVDS frame clock, negative |
| 腳位 37 | DVDD — Digital supply |
| 腳位 38 | DGND — Digital ground |
| 腳位 39 | NC — Not connected (per datasheet) |
| 腳位 40 | NC — Not connected (per datasheet) |
| 腳位 41 | NC — Not connected (per datasheet) |
| 腳位 42 | MODE — Mode select (1-wire/2-wire LVDS per datasheet) |
| 腳位 43 | GAIN — Programmable fine gain select |
| 腳位 44 | AVDD — Analog supply |
| 腳位 45 | AVSS — Analog ground |
| 腳位 46 | AVDD — Analog supply |
| 腳位 47 | AVSS — Analog ground |
| 腳位 48 | DGND — Digital ground |
典型應用
ADS6224IRGZR 適用於 6 應用s: Communications Baseband I/Q Digitizer, Medical Ultrasound Imaging Front-End, Industrial Digitizer / Oscilloscope Channel, Radar Signal Processing, Software Defined Radio (SDR) Receiver, Electronic Warfare / Defense Receiver.
Communications Baseband I/Q Digitizer
The ADS6224IRGZR's dual-channel simultaneous sampling and 105 MSPS per-channel rate make it ideal for digitizing baseband I and Q signals in communications receivers. The LVDS interface cleanly transports data into FPGAs running digital downconversion, and the 12-bit resolution provides sufficient dynamic range for typical signal levels. Place the ADC close to the analog front-end, route LVDS pairs with 100-ohm differential impedance, and decouple AVDD with a low-noise LDO such as the TPS7A4701 to preserve SNR across the full bandwidth.
推薦
Medical Ultrasound Imaging Front-End
Dual simultaneous sampling allows the ADS6224IRGZR to capture paired echo return channels from ultrasound transducers without skew, preserving phase coherence essential for beamforming. The 12-bit resolution at 105 MSPS covers typical ultrasound IF bandwidths from 5 to 40 MHz, and the LVDS interface minimizes radiated EMI near sensitive analog preamps. Combine with a low-noise TI LDO (e.g., TPS7A4701) on AVDD and a TI low-jitter clock source to maximize SNR while keeping channel density high on multi-element probes.
推薦
Industrial Digitizer / Oscilloscope Channel
In an industrial oscilloscope or high-speed digitizer, the ADS6224IRGZR's 105 MSPS sample rate per channel captures repetitive waveforms with high time resolution while the dual channels enable simultaneous measurement of two test points. The 3.5 dB coarse gain and 6 dB programmable fine gain simplify scaling wide dynamic range inputs without external attenuators. The serial LVDS output keeps EMI low in dense multi-channel backplanes, and the 48-VQFN exposed pad provides sufficient thermal dissipation for continuous-conversion workloads.
推薦
Radar Signal Processing
The ADS6224IRGZR suits radar intermediate frequency (IF) sampling in defense and weather radar systems. Dual channels can capture in-phase and quadrature returns from a single mixer, while 105 MSPS supports IF bandwidths up to ~50 MHz with proper antialiasing filtering. The LVDS interface reliably transmits data over backplane distances to signal-processor FPGAs. Tight LVDS trace length matching within 5-10 mils preserves timing margins, and a low-jitter clock source is critical to maintain radar Doppler resolution.
推薦
Software Defined Radio (SDR) Receiver
Software-defined radios use the ADS6224IRGZR to digitize wideband IF or RF directly for digital demodulation in FPGAs or DSPs. The dual channels can capture diversity or I/Q pairs; 12-bit resolution and 105 MSPS enable IF undersampling of L-band and S-band signals with appropriate external filters. The LVDS output minimizes EMI in radio enclosures, and the exposed thermal pad helps dissipate the power typical in continuous-conversion SDR applications.
推薦
Electronic Warfare / Defense Receiver
In EW and SIGINT receivers, the ADS6224IRGZR captures wide instantaneous bandwidth signals where dual simultaneous channels provide direction-finding or channel-pair diversity. The 105 MSPS rate and 12-bit resolution support broadband spectral monitoring when paired with digital FFT in an FPGA. The rugged industrial temperature range (-40 °C to +85 °C) and exposed-pad 48-VQFN package enable deployment in airborne and ground-mobile platforms. Use a low-jitter TI clock and length-matched LVDS routing for reliable data capture in dense EW chassis.
推薦
推薦產品摘要
工程參考資料，適用於 ADS6224IRGZR — 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 | ADS6225IRGZR | ADS6222IRGZR | ADS6221IRGZR | ADS6244IRGZRG4 | ADS6243IRGZRG4 |
|---|---|---|---|---|---|---|
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Package | 48-VQFN (RGZ) 7x7 mm | 48-VQFN (RGZ) 7x7 mm - same | 48-VQFN (RGZ) 7x7 mm - same | 48-VQFN (RGZ) 7x7 mm - same | 48-VQFN (RGZ) 7x7 mm - same | 48-VQFN (RGZ) 7x7 mm - same |
| Resolution | 12 bit | 12 bit | 12 bit | 12 bit | 14 bit | 14 bit |
| Sample Rate (max) | 105 MSPS | 125 MSPS | 80 MSPS | 65 MSPS | 105 MSPS | 80 MSPS |
| Number of Channels | 2 (simultaneous) | 2 (simultaneous) | 2 (simultaneous) | 2 (simultaneous) | 2 (simultaneous) | 2 (simultaneous) |
| Output Interface | Serial LVDS (1-wire / 2-wire) | Serial LVDS | Serial LVDS | Serial LVDS | Serial LVDS | Serial LVDS |
| Architecture | Pipelined | Pipelined | Pipelined | Pipelined | Pipelined | Pipelined |
| Supply Voltage | 3.3 V | 3.3 V | 3.3 V | 3.3 V | 3.3 V | 3.3 V |
| Operating Temperature | -40 °C to +85 °C | -40 °C to +85 °C | -40 °C to +85 °C | -40 °C to +85 °C | -40 °C to +85 °C | -40 °C to +85 °C |
| Pinout Match | Reference | Identical | Identical | Identical | Identical | Identical |
主要差異化特點
- Dual simultaneous sampling at 105 MSPS per channel (對比ADS6222IRGZR (80 MSPS))
- Pin-compatible speed-grade flexibility within the ADS622x family (對比ADS6244IRGZRG4 (14-bit))
- Integrated coarse and fine gain stages eliminate external attenuators (對比Discrete ADC + external PGA)
設計說明
Route LVDS data, bit clock, and frame clock pairs as length-matched 100-ohm differential traces, typically within 5-10 mils of matching. Keep LVDS pairs away from analog inputs and clock traces to avoid coupling. Place a 100-ohm differential termination resistor at each LVDS receiver pin and use continuous reference-plane ground beneath the LVDS routing.
Decouple AVDD with a 10 µF ceramic + 0.1 µF ceramic stack as close to each AVDD pin as possible; decouple DVDD the same way on digital supply pins. Power AVDD from a low-noise source like the TI TPS7A4701 LDO; using a switching regulator upstream without adequate filtering degrades SNR by several dB.
Drive the CLKP/CLKN differential clock from a low-jitter source such as the TI LMK04803. Clock jitter translates directly to ADC SNR degradation; aim for < 500 fs RMS at the ADC clock pin. Keep the clock trace short and route it on a different layer than LVDS data to avoid crosstalk.
Solder the exposed thermal pad of the 48-VQFN package to a continuous ground copper pour with multiple thermal vias to inner ground planes. The pad provides the primary heat dissipation path; missing or undersized thermal vias can raise junction temperature and reduce ADC linearity under continuous conversion.
Do not leave MODE, GAIN, or PDN pins floating - tie them through 10 kΩ resistors to the appropriate logic level. Floating control inputs can cause unpredictable power-up states or intermittent channel drops. Verify RESET timing at power-up; releasing RESET before supplies stabilize may put the part in an undefined state.
合規資訊
RoHS and REACH compliant per TI product page. Not AEC-Q100 qualified (industrial -40 °C to +85 °C temperature grade only).
