AD816AY - 500mA Differential Driver | Analog Devices | Telecom
MPN: AD816AY ✗ Akhir HayatAD816AY Ringkasan
A differential line driver is a high-speed output-stage device that converts a low-voltage differential signal into a larger voltage swing across a balanced load. The AD816AY belongs to the amplifier hierarchy as a special-purpose line transceiver and combines differential drive capability with two low-noise voltage-feedback amplifiers. Its industrial temperature range allows operation from -40°C to +85°C, while thermal overload protection improves system reliability during overload conditions.
The principal performance characteristics are 120 MHz small-signal bandwidth, 1,500 V/µs differential slew rate, and total harmonic distortion of -68 dB at 1 MHz into a 100 Ω load. These figures make the device suitable for demanding signal-chain paths where broad bandwidth, fast edge response, low waveform distortion, and substantial output-current capability are required. The integrated dual amplifier section also provides flexibility for receiver-side or intermediate signal-conditioning functions.
The AD816AY uses a high-current differential output architecture rather than the low-drive-current architecture of a conventional operational amplifier. The 500 mA output-current rating supports higher-amplitude loads than general-purpose amplifiers, while the 120 MHz bandwidth preserves signal amplitude and phase relationships at high frequencies. Thermal overload protection is included to help maintain reliability, although correct heat dissipation and output-stage stability remain important layout considerations.
Typical uses include telecommunication subscriber-line circuits, balanced line interfaces, high-frequency signal-conditioning paths, communications test equipment, and industrial driver stages. In a subscriber-line application, the differential driver can energize a balanced network while the two low-noise amplifiers handle portions of the receive or intermediate signal path. The 1,500 V/µs slew rate supports fast transitions, and the -68 dB distortion specification quantifies performance when driving 100 Ω at 1 MHz.
PCB design should provide a continuous return path, decouple nearby supply rails, and keep sensitive feedback and signal traces away from high-current output nodes. Because the AD816AY combines wideband drive with substantial output current, thermal performance depends on the load, frequency, supply voltage, copper area, and nearby thermal obstacles. Check the manufacturer pin-description table and recommended operating area before assigning tracks or selecting external protection components.
This page adds a parameter-focused comparison, application guidance, design notes, and sourcing support around the AD816AY datasheet. The analysis highlights where the 120 MHz bandwidth, 1,500 V/µs slew rate, 500 mA drive capability, and 15-lead package influence circuit selection, layout, and thermal design.
Pilihan pengganti yang segera untuk AD816AY — sama paket, pin-pin kompatibel. Bahagian paket yang berbeza memerlukan kerja ulang PCB diasingkan.
Tiada pilihan pengganti yang segera untuk produk ini.
Minta AlternatifAD816AY Penilaian maksimum & Ciri-ciri Elektrik
| Product Type | Differential line driver and dual low-noise voltage-feedback amplifier |
| Driver Output Current | 500 mA |
| Bandwidth | 120 MHz |
| Differential Slew Rate | 1,500 V/µs |
| Total Harmonic Distortion | -68 dB at 1 MHz into a 100 Ω load |
| Test Load | 100 Ω |
| Test Frequency | 1 MHz |
| Integrated Driver Channels | 2 high-current differential drive sections |
| Integrated Amplifier Channels | 2 low-noise voltage-feedback amplifiers |
| Gambaran Suhu Operasi | -40°C to +85°C |
| Kemasan | 15-lead plastic SIP |
| Thermal Protection | Thermal overload protection |
Panduan Konfigurasi Pin AD816AY 15-lead plastic sip
Konfigurasi pin untuk AD816AY (15-lead plastic sip 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 AD816AY.
Rujuk kepada lembaran data untuk konfigurasi pin penuh.
Aplikasi Biasa
AD816AY patut untuk 6 aplikasis: Subscriber-Line Interface, Balanced Line Driver, High-Speed Signal Conditioning, Communications Test Equipment, Industrial Analog Interface, Audio and Instrumentation Front End.
Subscriber-Line Interface
The AD816AY fits telecommunications subscriber-line interfaces because its differential driver can deliver 500 mA while preserving a 120 MHz bandwidth and 1,500 V/µs slew rate. The manufacturer datasheet identifies this use case and reports -68 dB total harmonic distortion at 1 MHz into a 100 Ω load. The device can energize the balanced line stage, while its two integrated low-noise amplifier sections support additional receive-side or signal-conditioning functions. Designers should evaluate output amplitude, DC content, load balance, and thermal rise because wideband output current can create substantial board-level heating.
Disebarkan
Balanced Line Driver
The AD816AY is appropriate for a balanced line-driver stage requiring more current than a conventional operational amplifier can provide. Its 500 mA output capability, 120 MHz bandwidth, and 1,500 V/µs differential slew rate allow large signals to cross a terminated balanced network with controlled edge speed. At 1 MHz into 100 Ω, the specified total harmonic distortion is -68 dB, providing a concrete distortion reference for the intended operating point. Layout should use short differential routes, adequate return paths, and symmetrical branch impedances to preserve balance.
Disebarkan
High-Speed Signal Conditioning
The AD816AY can condition moderate-amplitude, high-frequency signals when the application benefits from both wide bandwidth and strong drive capability. Its 120 MHz bandwidth supports rapid small-signal reproduction, while the 1,500 V/µs differential slew rate limits edge-rate distortion on larger waveforms. The two low-noise amplifier sections allow the same device to combine driver and conditioning functions without requiring separate packages for those stages. Gain, bandwidth, output swing, and stability must be checked against the manufacturer electrical-characteristic tables before closing the signal path.
Disebarkan
Communications Test Equipment
Communications and test equipment can use the AD816AY to create high-level, wideband differential test signals while retaining the benefit of integrated low-noise amplifier sections. The 500 mA drive rating provides useful current margin for suitable loads, and 120 MHz bandwidth supports signal integrity work well above audio frequencies. For a 100 Ω termination at 1 MHz, the specified total harmonic distortion is -68 dB, providing a basis for comparing signal quality. Bench designers should account for fixture loading, connector parasitics, supply decoupling, and the thermal contribution of repeated waveform tests.
Disebarkan
Industrial Analog Interface
The AD816AY can serve an industrial analog interface when a -40°C to +85°C operating range, wide bandwidth, and robust output drive are required. Its 500 mA differential output stage can reduce the need for an external line driver when the load and waveform meet the device limits. The integrated low-noise amplifiers may simplify adjacent conditioning, while thermal overload protection adds system-level reliability. Industrial designs should still verify supply range, power dissipation, grounding, and fault behavior directly against the Analog Devices manufacturer datasheet.
Disebarkan
Audio and Instrumentation Front End
The AD816AY can serve instrumentation and high-bandwidth audio front ends that benefit from a strong differential output and additional low-noise amplifier functions. Although its 120 MHz bandwidth is much wider than audio needs, that capability supports laboratory buffers, active balancing networks, and test-signal paths. The 1,500 V/µs differential slew rate preserves clean transitions on larger signals, while the specified -68 dB distortion at 1 MHz into 100 Ω provides a defined high-frequency reference. Designers should avoid interpreting the wide-bandwidth rating as a guarantee of inaudible noise without checking the input-referred noise and gain-bandwidth data.
Disebarkan
Ringkasan Produk Disebarkan
Data referensi kejuruteraan untuk AD816AY — perbandingan, panduan rancangan, dan maklumat kesediaan
Panduan Pilihan
Perbandingan dengan Gantian
| Parametr | Produk Ini |
|---|---|
| Brand | Analog Devices |
| Package | 15-lead plastic SIP |
| Product Type | Differential line driver and dual low-noise amplifier |
| Driver Output Current | 500 mA |
| Bandwidth | 120 MHz |
| Differential Slew Rate | 1,500 V/µs |
| Total Harmonic Distortion | -68 dB at 1 MHz into a 100 Ω load |
| Operating Temperature Range | -40°C to +85°C |
| Thermal Overload Protection | Yes |
| Lifecycle Status | Obsolete |
Penyeberangsung Jelas
- Combines differential power drive with integrated low-noise amplification (vsOPA132UA)
- Designed for high-frequency balanced line-drive applications (vsOPA875ID)
- Supports operation across the industrial temperature range (vsLM201AD)
Catatan Desain
The AD816AY can dissipate substantial power because its driver supports 500 mA while operating at frequencies up to 120 MHz. Estimate worst-case dissipation from the actual output waveform, load, supply voltage, and quiescent current rather than using the maximum-current rating alone. Provide wide copper paths, minimize thermal obstacles, and use the exposed package environment conservatively. Thermal overload protection is a safeguard, not a substitute for adequate heat spreading.
Treat the AD816AY as a wideband, high-current analog circuit. Route differential inputs and outputs as short, matched paths; keep feedback components close to the device; provide a low-impedance ground plane; and separate output-current returns from sensitive amplifier inputs. Decoupling capacitors should connect directly to the relevant supply and ground pins. Poor return-current paths can introduce feedback into the 120 MHz signal path even when the schematic is correct.
Do not infer a valid substitute from package dimensions alone. A true drop-in replacement for the AD816AY must match the 15-lead plastic SIP lead arrangement, supply limits, 500 mA output capability, 120 MHz bandwidth, 1,500 V/µs slew rate, noise behavior, thermal limits, and disable or shutdown functions. Verify every connection against the manufacturer pin-description table and electrical-characteristic tables before approving a legacy or cross-brand replacement.
Preserve the balanced nature of the signal path by keeping the two output branches symmetrical and terminating the line with the intended impedance. The -68 dB total harmonic distortion figure applies at 1 MHz into 100 Ω, so other frequencies and loads require separate evaluation. Probe at the correct reference plane, use controlled test loading, and inspect both differential and common-mode behavior when investigating waveform distortion.
Maklumat Kesediaan
No specific RoHS, REACH, lead-free, halogen-free, or conflict-minerals statement is included in the manufacturer material identified for this legacy device.
