TMC2340AH5C1 - 16-Bit DDS Synthesizer | onsemi | Signal Generation
部品番号: TMC2340AH5C1 ✗ 生産終了TMC2340AH5C1 概要
A direct digital synthesizer, or DDS, is a clocked waveform-generation architecture in which phase and amplitude are represented numerically before conversion into an analog waveform. DDS belongs to the clock-generation and frequency-synthesis hierarchy, alongside PLLs and other programmable waveform sources. It provides direct control of phase increment and amplitude, allowing frequency and level changes to be represented digitally instead of through analog tuning networks.
The TMC2340A performs waveform synthesis, modulation, and demodulation when supplied with a TTL clock and user-selected values. Its dual architecture produces quadrature-matched 16-bit sine and cosine outputs, while the documented 15-bit amplitude control provides a separate amplitude adjustment parameter. Output data uses 16-bit offset binary format, making the device suitable for systems requiring deterministic digital waveform data before DAC conversion.
According to the manufacturer-hosted TMC2340A datasheet, the device accepts a TTL clock signal and generates the matched sine and cosine pair automatically. The available product listing reports a 40 MHz operating or clock-related figure alongside a 50 Msps sampling capability, while the phase increment is 32 bits and amplitude control is 15 bits. These figures should be matched to the specific clock, output interface, and system timing requirements during design review.
Typical uses include precision signal generators, communication waveform sources, modulation and demodulation test equipment, and digital-to-analog converter front ends. Because the source describes DAC-compatible digital outputs, the component can also serve as the waveform engine in laboratory, industrial, and communications systems where repeatable phase and amplitude control is required.
The principal design consideration is package and data-interface integration. The available listings conflict between a 121-BPGA description and a 120-terminal PPGA description, so engineers must verify the physical pad layout, pin numbering, and board footprint against the original manufacturer documentation before layout or replacement.
This page consolidates the verified distributor and manufacturer-source details, explicitly identifies missing technical and commercial information, and separates known device capabilities from assumptions. That distinction is particularly important for this uncommon PGA-packaged DDS device, where package naming and pin documentation materially affect replacement feasibility.
ドロップイン代替品: TMC2340AH5C1 — 同一パッケージでピン互換。PCBの作り直しが必要な異なるパッケージの部品は除外されています。
この製品に利用可能なドロップイン代替品はありません。
代替品をリクエストTMC2340AH5C1 仕様
| Device Type | Direct Digital Synthesis IC |
| Output Resolution | 16 bit |
| Output Channel Format | Matched quadrature sine and cosine |
| Maximum Sampling Rate | 50 Msps |
| Reported Clock Frequency | 40 MHz |
| Phase Increment Resolution | 32 bit |
| Amplitude Control Resolution | 15 bit |
| Input Clock Type | TTL clock signal |
| Output Data Format | 16-bit offset binary |
| Primary Functions | Waveform synthesis, modulation, and demodulation |
| 動作温度範囲 | 0 C to 70 C |
| Temperature Grade | Commercial |
| パッケージ | 121-BPGA (also described as PPGA120 in distributor data) |
| Reported Terminal Count | 120 terminals |
| Terminal Form | PIN/PEG |
| Package Shape | Square |
TMC2340AH5C1 square ピン配置ガイド
TMC2340AH5C1 (square パッケージ) のピン配置。 ピン番号、機能、接続図はメーカーのデータシートで定義されています。正確なフットプリントとはんだ付けのガイドラインについては、データシートを参照してください。
詳細なピン配置データはありません: TMC2340AH5C1.
詳細は データシート をご参照ください。
主な用途
TMC2340AH5C1 の用途: 6 件s: Precision Digital Signal Generator, Communications Modulation and Demodulation, Digital-to-Analog Converter Waveform Front End, Industrial Waveform and Function Generator, Audio and Baseband Signal Simulation, Instrument Calibration and Test Signal Source.
Precision Digital Signal Generator
The TMC2340AH5C1 is appropriate for a digital waveform engine that must produce coordinated sine and cosine signals with a reported maximum sampling rate of 50 Msps. Its 16-bit output format preserves 65,536 digital amplitude codes, while the 32-bit phase increment supports fine numerical control of output frequency. The device can generate matched quadrature data for a downstream DAC, although the external DAC, reconstruction filter, reference, clock source, and output amplifiers must be designed separately. The 15-bit amplitude value adds another programmable control dimension, making the IC useful where fixed-frequency oscillators are insufficient and phase-continuous frequency changes are required.
おすすめ
Communications Modulation and Demodulation
The TMC2340AH5C1 is well suited to communications test and signal-generation blocks because its manufacturer datasheet identifies modulation and demodulation alongside ordinary waveform synthesis. A 32-bit phase increment permits precise digital frequency control, and the matched sine and cosine outputs can support quadrature modulation architectures such as I/Q signal generation. With 16-bit DAC-compatible data and a reported 50 Msps rate, the IC can feed a suitable reconstruction path. Actual modulation bandwidth and carrier accuracy depend on the clock source, DAC design, analog filters, and the system controller feeding phase and amplitude values.
おすすめ
Digital-to-Analog Converter Waveform Front End
The TMC2340AH5C1 can serve as the digital waveform source ahead of a high-resolution DAC in laboratory instruments and industrial test equipment. Its 16-bit sine and cosine outputs are provided in DAC-compatible offset-binary format, reducing format-conversion work in a compatible interface. The 50 Msps reported sampling capability supports higher-frequency reconstructed waveforms than lower-rate sources, although Nyquist-limited bandwidth and filter design determine the useful analog output range. The 15-bit amplitude control provides a digital means of adjusting waveform level before conversion, while the 32-bit phase increment supports precise tuning of the synthesized frequency.
おすすめ
Industrial Waveform and Function Generator
The TMC2340AH5C1 can form the core of an industrial waveform generator when the equipment requires programmable sine and cosine outputs rather than a fixed test tone. Its 32-bit phase increment offers fine frequency resolution, and the 15-bit amplitude input allows a system controller to vary output level digitally. The reported 50 Msps operation provides sufficient digital update rate for many mid-band waveform-generation tasks. Deployment in an instrument still requires calibration, a low-jitter clock, suitable DACs, analog reconstruction filters, protection circuitry, and careful grounding to prevent converter noise from affecting the generated signal.
おすすめ
Audio and Baseband Signal Simulation
The TMC2340AH5C1 is relevant to baseband waveform simulation because it generates matched sine and cosine data that can be converted into analog or further digital representations. The 16-bit output width offers more code resolution than conventional 8-bit generation, while the 15-bit amplitude control provides independent level programming. At the reported 50 Msps sampling rate, the synthesizer can represent baseband waveforms beyond simple audio frequencies. Its usefulness depends on the available clock and DAC bandwidth, as well as filtering and gain calibration. Engineers should also account for the large PGA package and verify its mechanical footprint before adopting it in compact audio or embedded test equipment.
おすすめ
Instrument Calibration and Test Signal Source
The TMC2340AH5C1 can support calibration routines that require repeatable, digitally programmed sine and cosine test signals. Its 32-bit phase increment permits fine frequency resolution, and the 15-bit amplitude control lets a controller adjust signal level through a consistent digital interface. The device produces 16-bit offset-binary data that can be directed to suitable DAC channels, followed by reconstruction filtering and gain conditioning. For metrology-grade use, the complete chain must be calibrated with traceable references, and clock jitter, DAC nonlinearity, filter magnitude response, and analog output noise must be evaluated separately because the verified data does not provide those system-level specifications.
おすすめ
おすすめ製品の概要
エンジニアリング参考データ: TMC2340AH5C1 — 比較、設計ガイダンス、コンプライアンス情報。
選定ガイド
主な差別化要因
- Native matched quadrature waveform generation （vs TMC2340AH5C1)
- Independent numerical frequency and amplitude controls （vs TMC2340AH5C1)
- Documented modulation and demodulation capability （vs TMC2340AH5C1)
設計ノート
Do not release a PCB footprint from distributor package names alone. The verified listings alternately identify a 121-BPGA package, a PPGA120, and 120 terminals. Download and verify the original manufacturer pinout and package drawing, then reconcile pad numbering, thermal or mechanical ground pads, and the number of terminated pins before Gerber release.
Treat the TTL clock and high-speed digital outputs as controlled-impedance nets. Route the clock away from DAC data and analog reconstruction components, use a low-jitter source, and confirm the complete interface voltage levels against the original device documentation. The verified distributor data does not identify the I/O standard beyond the TTL clock description.
Do not treat the 50 Msps sampling rate as a guaranteed 50 MHz analog sine-wave output. The usable analog bandwidth is constrained by the Nyquist limit, DAC reconstruction behavior, output filters, clock jitter, and downstream analog circuitry. Likewise, the listed 40 MHz value must be assigned to the correct clock or timing parameter by consulting the manufacturer datasheet.
Determine supply voltage, quiescent current, I/O levels, and power dissipation directly from the original manufacturer datasheet before designing the rails. None of those values appears in the supplied verified extracts. Provide local decoupling according to the manufacturer guidance and verify the PGA package's thermal and mechanical requirements rather than estimating them from generic PGA packages.
コンプライアンス情報
The verified sources identify a commercial 0 C to 70 C temperature grade but do not state RoHS, REACH, lead-free, halogen-free, conflict-minerals, or AEC-Q100 status. AEC-Q100 is treated as not applicable because this is an integrated circuit, but qualification status was not explicitly documented.
