AD9768JQ - 8-Bit 100 MSPS ECL DAC | Analog Devices
MPN: AD9768JQ ✗ Akhir HayatAD9768JQ Ringkasan
A DAC is a data-acquisition and signal-generation component that converts parallel digital codes into proportional current or voltage. The AD9768 belongs to the converter hierarchy: digital-to-analog converter, current-output DAC, data converter, and semiconductor IC. Its current-output architecture is useful when the downstream circuit requires a high-speed current-to-voltage conversion stage or direct current-domain signal processing.
The AD9768 provides 8-bit resolution and supports update rates as high as 100 MSPS. Its ECL-level digital interface is designed for high-speed systems, while the multiplying capability allows the DAC to be used in signal-generation, modulation, waveform-shaping, and feedback applications. The low-glitch architecture highlighted by the manufacturer is relevant to reducing unwanted transient energy during digital-code transitions, although exact glitch specifications require the complete AD9768 datasheet.
Typical circuit use places the converter between an 8-bit digital source and a current-to-voltage or load network. Because the output is current-based, external analog circuitry, impedance matching, and careful grounding strongly influence signal quality. The manufacturer describes operation as a standard DAC or as a two-quadrant multiplying DAC, giving designers flexibility for both ordinary waveform generation and multiplier-style signal paths.
When designing a board around the AD9768JQ, verify the exact pinout, supply requirements, input logic levels, output compliance, and timing margins from the AD9768 datasheet. The 18-pin CERDIP package is not interchangeable with a surface-mount DAC without a deliberate PCB redesign. The verified distributor result identifies the package as 18-CERDIP, while other electrical values not present in the supplied data are intentionally not guessed.
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AD9768JQ
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Lihat Datasheet →AD9768JQ Penilaian maksimum & Ciri-ciri Elektrik
| Fungsi | Current-output digital-to-analog converter |
| Pemecahkatan | 8 bit |
| Maximum Update Rate | 100 MSPS |
| Digital Input Logic | ECL-level |
| Multiplying Operation | Two-quadrant multiplying DAC |
| Maximum Multiplying Bandwidth | 40 MHz |
| Digital Input Transition Time | 5 ns |
| Jenis Output | Current output |
| Kemasan | 18-pin CERDIP |
| Jenis Pemasangan | Through-hole |
| Converter Category | Digital-to-analog converter |
| Input Interface | 8-bit parallel digital input |
| Multiplying Capability | Two-quadrant multiplication |
| Maximum Analog Update Rate | 100 MSPS |
| Manufacturer | Analog Devices |
| Verified Distributor Price | From $15.2202 as of 2026-10-23 |
Panduan Konfigurasi Pin AD9768JQ 18-pin cerdip
Konfigurasi pin untuk AD9768JQ (18-pin cerdip pakai). Komponen analog ini mempunyai pin masukan, keluaran, dan kuasa. Rujuk dokumen pengeluar untuk konfigurasi pengecualian, pemulihan, dan pin aktifkan. Ideal untuk pengawasan isyarat dan litar pengukur.
Tiada data garisan pin yang diperoleh untuk AD9768JQ.
Rujuk kepada lembaran data untuk konfigurasi pin penuh.
Aplikasi Biasa
AD9768JQ patut untuk 6 aplikasis: High-Speed Digital Waveform Generation, Two-Quadrant Analog Multiplication, Communications Test Equipment, Industrial Feedback and Control Loops, Pulse and Transient Signal Generation, Digital-to-Analog Loopback Systems.
High-Speed Digital Waveform Generation
AD9768JQ fits high-speed waveform generation because it accepts 8-bit ECL-level digital data and converts codes at update rates up to 100 MSPS. Place the converter between a parallel digital source and an external current-to-voltage network to produce an analog test or control waveform. The useful design trade-off is that the high update rate supports wide-band signals, while the current output requires carefully selected impedance and termination to control amplitude, compliance, and edge response.
Disebarkan
Two-Quadrant Analog Multiplication
AD9768JQ is suitable for two-quadrant multiplying-DAC applications because Analog Devices specifies this operating mode with bandwidth up to 40 MHz. In a multiplier circuit, the digital code and an analog control signal combine to produce a scaled output, which can support modulation, gain control, or waveform shaping. The external current-output network and analog control path must preserve the specified compliance and impedance conditions, and the layout should minimize parasitic capacitance around the high-speed output.
Disebarkan
Communications Test Equipment
AD9768JQ can support communications test equipment that needs an 8-bit, high-update-rate analog source. The 100 MSPS capability provides temporal headroom for generating test patterns, transient waveforms, and modulated analogs when the external output network has sufficient bandwidth. Its ECL-level interface fits systems designed around high-speed digital logic, although a designer must verify logic thresholds and timing from the AD9768 datasheet rather than treating the interface as ordinary CMOS.
Disebarkan
Industrial Feedback and Control Loops
AD9768JQ may be used in specialized industrial feedback or control systems where a digital command must become an analog excitation or reference. The two-quadrant multiplying capability can make the converter useful when the output must respond to both a digital code and an analog control quantity. For reliable operation, evaluate output settling, load impedance, thermal conditions, and isolation between the high-speed converter and sensitive control circuitry; the verified data does not specify industrial temperature or qualification grades.
Disebarkan
Pulse and Transient Signal Generation
AD9768JQ is appropriate for pulse, edge, and transient generation where the 100 MSPS update rate is useful and an 8-bit amplitude resolution is acceptable. The current-output architecture can be coupled to a precision resistor or active transimpedance stage to establish the required voltage range. Keep the output path short, provide stable return paths, and validate transient settling with the actual load because package, connector, and PCB parasitics can limit usable bandwidth.
Disebarkan
Digital-to-Analog Loopback Systems
AD9768JQ can serve as the DAC element in a digital-to-analog and analog-to-digital loopback test path. Its 8-bit input and high update rate make it useful for exercising conversion bandwidth, digital timing, and analog reconstruction in a controlled system. When pairing it with a high-speed ADC, align clocking and account for converter and acquisition latency; the supplied data does not confirm a specific matching ADC or guaranteed end-to-end latency.
Disebarkan
Ringkasan Produk Disebarkan
Data referensi kejuruteraan untuk AD9768JQ — perbandingan, panduan rancangan, dan maklumat kesediaan
Panduan Pilihan
Perbandingan dengan Gantian
| Parametr | Produk Ini | AD9768JQ |
|---|---|---|
| Package | 18-pin CERDIP | 18-pin CERDIP |
| Brand | Analog Devices | Analog Devices |
| Resolution | 8 bit | 8 bit |
| Maximum Update Rate | 100 MSPS | 100 MSPS |
| Digital Input Logic | ECL-level | ECL-level |
| Output Type | Current output | Current output |
| Multiplying Mode | Two-quadrant multiplying DAC | Two-quadrant multiplying DAC |
| Multiplying Bandwidth | 40 MHz | 40 MHz |
| Verified Price | From $15.2202 as of 2026-10-23 | From $15.2202 as of 2026-10-23 |
Penyeberangsung Jelas
- High-speed 8-bit current-output conversion (vsAD9768JQ)
- Two-quadrant multiplying operation (vsAD9768JQ)
- ECL-level digital interface (vsAD9768JQ)
Catatan Desain
Treat the AD9768 output as a high-speed current-output node. Keep the DAC-to-I/V or load connection short, use a controlled return path, and minimize parasitic capacitance and inductance. Place any input or output termination according to the complete Analog Devices datasheet and the actual transmission-line environment; do not infer ECL termination or output impedance from distributor summaries.
Use an 18-pin CERDIP-compatible through-hole footprint and verify every pad assignment against the official AD9768 pinout before layout release. Separate sensitive analog routing from high-speed digital input routing where practical, maintain continuous ground-plane return paths, and place decoupling and termination components close to their associated pins. The verified data confirms the package but does not provide a complete PCB pin table.
Do not assume that any 8-bit DAC is a drop-in replacement. AD9768JQ requires the same logic family, package, pin assignment, output architecture, and operating performance to be evaluated. Before purchasing a substitute, compare the 100 MSPS update rate, 40 MHz multiplying bandwidth, ECL input thresholds, current-output compliance, supply requirements, and timing specifications. The supplied cross-reference data identifies no confirmed replacement.
The external analog network determines how current output becomes a usable voltage, so resistor tolerance, amplifier input capacitance, and load impedance directly affect amplitude accuracy and bandwidth. Confirm the converter's output compliance and settling specifications from the manufacturer datasheet, then include connector and PCB capacitance in the bandwidth budget. Do not select resistor or capacitor values from unverified assumptions.
Maklumat Kesediaan
The verified distributor result describes AD9768JQ as a RoHS electronic part, but the supplied manufacturer product-page snippet does not provide explicit RoHS, REACH, halogen-free, or conflict-minerals declarations. Compliance fields are therefore retained as unknown where explicit evidence is unavailable.
