AD9058JJ - Dual 8-Bit 50 MSPS ADC | Analog Devices
MPN： AD9058JJ ✗ 停產AD9058JJ 概覽
An ADC is a data-conversion IC that samples an analog voltage and converts it into a digital code. A flash-type ADC performs conversion through parallel comparison and encoding networks, making it appropriate for high-speed sampling where latency and throughput are important. The AD9058 belongs to the ADC/DAC category, within the broader data-converter and semiconductor hierarchy.
Key features include two matched ADCs on one monolithic IC, operation at up to 50 MSPS, low input capacitance of 10 pF, and power consumption below 1 W. The flexible input range supports both unipolar and bipolar signal arrangements when the appropriate circuitry is used. The optional internal reference can drive both converters and can establish a 0 V to +2 V unipolar operating range.
The monolithic dual-converter architecture reduces the need for two separate ADC packages while preserving independent analog inputs and digital outputs. A common device and matched channels are useful when sampling quadrature signals or monitoring two channels that must be acquired coherently. Input capacitance of 10 pF lowers the burden placed on source drivers, while the 50 MSPS ceiling supports communication demodulation, digital oscilloscopes, and other sampled-data systems.
Typical uses include quadrature demodulation in communications, digital oscilloscopes, digital communications receivers, instrumentation, and control systems. The internal reference can simplify system design when an external precision reference is unnecessary, but external references may be preferred when multiple converters must share an especially stable reference.
Designers should account for input bandwidth, settling time, source impedance, clock jitter, and analog supply requirements when selecting input circuitry. Decoupling should follow the manufacturer datasheet recommendations, and unused converter channels should be configured according to the prescribed interface and power-state sequence.
This page consolidates the verified manufacturer description, lifecycle information, pricing references, family alternatives, and application guidance into an engineering-oriented resource for evaluating the AD9058JJ in dual-channel high-speed acquisition systems.
直接替換替代品，適用於 AD9058JJ — 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： AD9058JJ （相同外形與佔位） — 差異在於 Package, Resolution.
AD9058JJZ
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
AD9058AJJ
✅ 直接替換 ⚠️ 規格未經驗證聯絡詢價
查看資料表 →AD9058AKJ
✅ 直接替換📋 參考替代品（不在目錄中）
AD9058AKJZ
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
AD9058AJJZ
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
AD9058JJ 最大額定值與電氣特性
| Number of Converters | 2 independent ADCs |
| 解析度 | 8 bits |
| Maximum Conversion Rate | 50 MSPS |
| Onboard Voltage Reference | Optional +2 V reference |
| Reference Output Capability | Internal reference can drive both ADCs |
| 輸入電容 | 10 pF |
| Power Consumption | <1 W |
| Power Supply | +5 V and ±5 V |
| Input Range | Flexible input range |
| Unipolar Reference Configuration | 0 V to +2 V |
| Commercial Temperature Range | 0°C to +70°C |
| Military Temperature Range | -55°C to +125°C |
| 封裝 | 44-pin J-lead ceramic package |
| Package Type | PLCC-44 |
| 安裝類型 | Surface mount |
| 生命週期狀態 | Obsolete |
AD9058JJ plcc-44 腳位配置指南
AD9058JJ（plcc-44 封裝）的腳位配置。 此類比元件具有輸入、輸出與電源腳位。偏移歸零、補償與致能腳位配置請參閱製造商資料表。適用於訊號調理與放大器電路。
無詳細腳位定義資料： AD9058JJ.
請參閱 資料表 以查看完整腳位配置。
典型應用
AD9058JJ 適用於 6 應用s: Communications Quadrature Demodulation, Digital Oscilloscope Front End, Digital Communications Receiver, Precision Test and Measurement, Industrial Control and Data Acquisition, Signal Processing and Waveform Capture.
Communications Quadrature Demodulation
The AD9058JJ suits quadrature demodulation because it integrates two independent 8-bit ADCs that can sample to 50 MSPS on one monolithic device. This allows in-phase and quadrature channels to be acquired coherently while avoiding two separate converter packages. The 10 pF input capacitance reduces loading on the signal chain, although amplifier and filter selection must preserve adequate bandwidth and settling performance. The optional +2 V reference can support a unipolar 0 V to +2 V input arrangement when suitable external circuitry is used. For a receiver built around the AD9058 family, engineers should verify clock jitter, channel alignment, and the manufacturer's recommended +5 V and ±5 V supply arrangement before committing a board revision.
推薦
Digital Oscilloscope Front End
The AD9058JJ provides two 8-bit acquisition channels at up to 50 MSPS, which is useful in digital oscilloscope front ends requiring simultaneous sampling of two related waveforms. Integrating both converters on one monolithic IC reduces component count and can simplify clock distribution to the acquisition channels. Its input capacitance of 10 pF eases source-loading requirements, but the complete input path still needs enough bandwidth for the intended sample rate. Designers should account for ADC settling, comparator and encoder timing, clock quality, and correct power decoupling. The optional internal +2 V reference can simplify a compact instrument, although a shared external reference may offer better consistency when multiple converters participate in one measurement.
推薦
Digital Communications Receiver
The AD9058JJ can serve as the dual conversion element in a digital communications receiver that needs two synchronized or closely related high-speed analog channels. Its 8-bit resolution and 50 MSPS maximum rate match legacy receiver architectures requiring simultaneous I/Q acquisition, while the dual monolithic implementation simplifies synchronization compared with two separate ADC packages. The 10 pF input capacitance is favorable for driving from RF detector or mixer circuitry, but gain, anti-alias filtering, and bandwidth must be designed around the sampling rate. Because the AD9058JJ is obsolete, new receiver development should confirm lifecycle availability and compare the exact AD9058 order code rather than assuming that all suffix variants are interchangeable.
推薦
Precision Test and Measurement
The AD9058JJ is applicable to test and measurement equipment that captures two analog nodes for correlation, gain analysis, or time-aligned observation. Its two independent converters and 50 MSPS rate provide sufficient throughput for many legacy instrumentation signal chains, while the monolithic construction keeps the acquisition section compact. The optional +2 V onboard reference can provide a straightforward unipolar setup, but precision measurement designs may prefer an external reference for traceability and multi-channel consistency. Input settling and source impedance remain important because the 10 pF input capacitance describes loading rather than the complete acquisition bandwidth. Verify noise performance, clock-jitter sensitivity, and decoupling against the manufacturer datasheet before using the obsolete part in new calibrated equipment.
推薦
Industrial Control and Data Acquisition
The AD9058JJ can support dual-channel industrial data-acquisition systems where two process or control signals must be sampled at a common conversion rate. Its 8-bit resolution is appropriate for monitoring applications that do not require high-order precision, and the dual ADC architecture reduces board-space and component-count requirements compared with separate converters. At 50 MSPS, the device can oversample relative to slower control-loop signals, although anti-alias filtering is still required. The +5 V and ±5 V supply arrangement and the optional +2 V internal reference must be implemented exactly as directed by the datasheet. Because the AD9058JJ is obsolete, use it primarily in established equipment and confirm long-term supply before designing a new production control board around it.
推薦
Signal Processing and Waveform Capture
The AD9058JJ is suitable for waveform-capture front ends that require simultaneous access to two independent analog signals. Both converters operate from the same monolithic device, which can simplify clocking and data-capture synchronization, while operation at up to 50 MSPS provides broad timing margin for transient and periodic waveform analysis. The 10 pF input capacitance reduces the capacitive burden on upstream buffers, but the source must still deliver adequate settling behavior within the converter acquisition window. External anti-alias filters, appropriately low-jitter sampling clocks, and clean analog and digital rails are central to repeatable results. The optional internal +2 V reference can simplify entry-level designs, while precision systems may benefit from a shared external reference and independently characterized analog front end.
推薦
推薦產品摘要
工程參考資料，適用於 AD9058JJ — 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 | AD9058JJZ | AD9058AJJ | AD9058AKJ | AD9058AKJZ | AD9058AJJZ |
|---|---|---|---|---|---|---|
| Package | PLCC-44, 44-pin J-lead ceramic package | PLCC-44, same package family | PLCC-44, same package family | PLCC-44, same package family | PLCC-44, same package family | PLCC-44, same package family |
| Brand | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Analog Devices |
| ADC Architecture | 2 independent 8-bit ADCs | 2 independent 8-bit ADCs | 2 independent 8-bit ADCs | 2 independent 8-bit ADCs | 2 independent 8-bit ADCs | 2 independent 8-bit ADCs |
| Maximum Conversion Rate | 50 MSPS | Up to 50 MSPS | Up to 50 MSPS | Up to 50 MSPS | Up to 50 MSPS | Up to 50 MSPS |
| Input Capacitance | 10 pF | 10 pF | 10 pF | 10 pF | 10 pF | 10 pF |
| Power Consumption | <1 W | <1 W | <1 W | <1 W | <1 W | <1 W |
| Onboard Reference | Optional +2 V onboard reference | Optional +2 V onboard reference | Optional +2 V onboard reference | Optional +2 V onboard reference | Optional +2 V onboard reference | Optional +2 V onboard reference |
| Power Supplies | +5 V and ±5 V | +5 V and ±5 V | +5 V and ±5 V | +5 V and ±5 V | +5 V and ±5 V | +5 V and ±5 V |
| Input Range | Flexible input range; 0 V to +2 V using onboard reference | Flexible input range; 0 V to +2 V using onboard reference | Flexible input range; 0 V to +2 V using onboard reference | Flexible input range; 0 V to +2 V using onboard reference | Flexible input range; 0 V to +2 V using onboard reference | Flexible input range; 0 V to +2 V using onboard reference |
主要差異化特點
- Two matched converters integrated on one monolithic device (對比AD9058AKJ)
- High-speed dual-channel throughput (對比AD9058AJJZ)
- Optional integrated +2 V reference (對比AD9058AKJZ)
- Established 44-pin J-lead package family (對比AD9058AJJ)
設計說明
The AD9058JJ provides two independent converter inputs, so each analog path should have symmetrical source impedance, gain, and antialias filtering when channel matching is important. Its verified input capacitance is 10 pF, which reduces loading relative to a higher-capacitance interface but does not guarantee settling. Estimate the maximum source impedance and amplifier settling error at the target sampling rate, then compare that error with the available 8-bit resolution before finalizing the analog front end.
Use the manufacturer-recommended +5 V and ±5 V supply arrangement rather than assuming a single-rail implementation. Place decoupling capacitors close to the corresponding supply pins and preserve the return-current path for clock and digital signals. Because the verified family power consumption is below 1 W, heat is generally manageable, but supply noise and rail sequencing can still affect conversion performance; follow the AD9058 datasheet layout and grounding guidance.
Do not substitute an AD9058 order code solely from its function description. Confirm the 44-pin J-lead pin table, package drawing, temperature grade, supply requirements, and reference configuration for every proposed replacement. The AD9058JJ is obsolete, and the verified source explicitly identifies a 44-pin J-lead ceramic package. A board-level drop-in decision requires comparison of all 44 connections rather than only resolution and sampling rate.
Route the sampling clock with short traces, controlled return paths, and isolation from analog inputs to reduce clock-to-input coupling. Digital output routing should not share vulnerable analog input paths, and the analog and digital return currents should be managed according to the manufacturer layout. If the onboard +2 V reference is used, follow its bypassing and output-routing recommendations; avoid treating the optional reference as a universal precision reference for every measurement requirement.
合規資訊
The verified data does not provide explicit RoHS, REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals statements for AD9058JJ. Commercial and military temperature options are identified, but that does not by itself establish AEC-Q100 qualification.
