AD8534ARZ-REEL - Quad 250mA RRIO Op Amp | Analog Devices
Référence : AD8534ARZ-REEL ✓ Actif| Qté | Prix unitaire | Total |
|---|---|---|
| 1 | $3.42 | $3,42 |
| 10 | $2.96 | $29,60 |
| 100 | $2.18 | $218,00 |
| 500 | $1.74 | $870,00 |
| 1 000 | $1.46 | $1 460,00 |
| 2 500 | $1.28 | $3 200,00 |
AD8534ARZ-REEL Présentation
A quad rail-to-rail op amp is a single-package device containing four independent amplifier channels whose input common-mode range and output swing each extend to within tens of millivolts of both supply rails. Within the broader IC hierarchy, an op amp belongs to the linear amplifier family, which sits under analog signal-chain ICs and ultimately under the integrated circuit taxonomy. The rail-to-rail attribute removes the headroom limitation of older single-supply designs (e.g. LM358), enabling zero-crossover distortion on signals that swing close to either rail, which is critical for single-supply ADC buffering and audio line drivers.
Key features include 250 mA continuous output drive, 750 µA quiescent current per amplifier, no output phase reversal, low input bias currents, and unity-gain stability with capacitive loads. The wide bandwidth and high drive make the AD8534 well suited to drive headphones, line-level audio, LEDs, transformers, and small DC motors directly. The 14-pin SOIC footprint is the industry-standard pinout for quad op amps, so it drops directly onto boards originally designed for AD8534, TL074, LM324, or MCP6004.
The AD8534 architecture is a CMOS output stage with class-AB drive transistors, achieving the unusual combination of low quiescent current and high peak output current. AC performance - 3 MHz GBP and 5 V/µs slew rate - is sufficient for audio bandwidth and many transducer-signal-conditioning applications without the cost of a precision audio amplifier.
Typical applications include audio line drivers, headphone amplifiers, TFT-LCD VCOM buffer amplifiers, transformer/relay drivers, multiplexed ADC input buffers, motor drive stages, and general-purpose signal conditioning in industrial and consumer products.
Design tip: although the output can source/sink 250 mA continuously, SOIC-14 has a thermal resistance around 110 °C/W; simultaneous high current on multiple channels requires attention to PCB copper area and total power dissipation to keep junction temperature in range.
This page synthesizes distributor pricing, drop-in 14-pin SOIC alternatives, and practical layout guidance that you will not find in the manufacturer datasheet alone.
Alternatives de remplacement direct pour AD8534ARZ-REEL — même boîtier, compatible broche à broche. Les références à boîtier différent nécessitant une retouche du PCB sont exclues.
Variantes de cette série
Modèles de la même série directement compatibles avec AD8534ARZ-REEL (même facteur de forme et même empreinte) — différant par Amplifier Type, Input Bias Current, Slew Rate, Number of Channels, MSL Level.
Outil de comparaison rapide — sélectionnez des références alternatives pour une comparaison côte à côte :
AD8534ARZ
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
AD8534ARUZ
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
AD8534ARU-REEL
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
AD8532ARZ
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
MCP6004-E/SL
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
LMV324IPWR
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
TL074CDR
✅ Remplacement direct✓ En stock
$0.12 / unité
Voir la fiche technique →AD8534ARZ-REEL Valeurs maximales et caractéristiques électriques
| Number of Channels | 4 (Quad) |
| Amplifier Type | General Purpose, CMOS |
| Type de sortie | Rail-to-Rail Input and Output |
| Supply Voltage (Single) | 2.7 V to 6 V |
| Output Drive Current | ±250 mA |
| Gain Bandwidth Product | 3 MHz |
| Slew Rate | 5 V/µs |
| Quiescent Current per Amplifier | 750 µA (typ) |
| Input Bias Current | Low (CMOS) |
| Phase Reversal | None |
| Plage de température de fonctionnement | -40 °C to +85 °C |
| Package Type | 14-pin SOIC (R), Narrow Body |
| Type de montage | Surface Mount |
| Packaging | Tape & Reel (7-inch reel, 2500 pcs) |
| Niveau MSL | 1 (unlimited floor life) |
| Statut RoHS | Compliant |
| Lead-Free | Yes |
Configuration des broches de AD8534ARZ-REEL
| Broche 1 | OUTA — Amplifier A output |
| Broche 2 | -INA — Amplifier A inverting input |
| Broche 3 | +INA — Amplifier A non-inverting input |
| Broche 4 | V+ — Positive supply |
| Broche 5 | +INB — Amplifier B non-inverting input |
| Broche 6 | -INB — Amplifier B inverting input |
| Broche 7 | OUTB — Amplifier B output |
| Broche 8 | V- — Negative supply / Ground (single supply) |
| Broche 9 | OUTD — Amplifier D output |
| Broche 10 | -IND — Amplifier D inverting input |
| Broche 11 | +IND — Amplifier D non-inverting input |
| Broche 12 | +INC — Amplifier C non-inverting input |
| Broche 13 | -INC — Amplifier C inverting input |
| Broche 14 | OUTC — Amplifier C output |
Applications typiques
AD8534ARZ-REEL convient pour 6 applications: Stereo Headphone Driver, TFT-LCD VCOM Buffer Amplifier, LED Indicator / Backlight Driver, Multiplexed ADC Input Buffer, Audio Line Driver / DAC Output Buffer, Small DC Motor / Solenoid Driver.
Stereo Headphone Driver
The AD8534ARZ-REEL drives 32 Ω stereo headphones directly from a 5 V rail, delivering ±250 mA per channel into the load. Two of the four amplifier channels form a stereo headphone buffer - one channel per phase - while the remaining two channels can be reserved as line-output buffers for the same audio source. Unlike a typical op amp limited to tens of milliamps, the AD8534 maintains rail-to-rail output swing down to a 32 Ω load, achieving headphone output levels up to 50 mW per channel without distortion clipping. Source: AD8531/8532/8534 datasheet typical audio line-driver circuit.
Recommandé
TFT-LCD VCOM Buffer Amplifier
The AD8534ARZ-REEL serves as a low-impedance VCOM buffer in TFT-LCD panels, where the amplifier must sink/source the panel's parasitic capacitance during pixel transitions while maintaining a stable DC mid-supply voltage. With 250 mA drive and 5 V/µs slew rate, the AD8534 can hold VCOM within ±5 mV during heavy load steps, eliminating flicker artifacts. Each panel typically uses 1-2 quad packages to drive multiple VCOM rails, so the 14-SOIC footprint is preferred over multi-channel SOIC-8 duals for PCB density. Source: AD8531/8532/8534 datasheet typical TFT VCOM driver circuit.
Recommandé
LED Indicator / Backlight Driver
The AD8534ARZ-REEL drives multiple high-brightness LEDs in indicator or backlight arrays directly from its 250 mA per-channel output, eliminating the need for a discrete MOSFET driver. One AD8534 quad can independently control 4 LEDs via PWM at the enable pin of each op amp configured as a transconductance stage, or with a series FET for high-side PWM dimming. The rail-to-rail output keeps LED brightness uniform across the full PWM duty-cycle range, an advantage over older op amps that cannot swing close to the negative rail. Source: AD8531/8532/8534 datasheet LED driving application.
Recommandé
Multiplexed ADC Input Buffer
In data acquisition systems with multiplexed analog inputs, the AD8534ARZ-REEL provides a low-impedance buffer between the MUX output and the ADC input, isolating MUX on-resistance from the ADC's sampling capacitor. The 3 MHz GBP and 5 V/µs slew rate settle 16-bit ADCs to within 1 LSB in under 2 µs when driving a 100 pF ADC input capacitance. Quad packaging allows four MUX channels to be buffered simultaneously with one IC, reducing PCB area versus four single op amps. Source: AD8531/8532/8534 datasheet ADC driver section.
Recommandé
Audio Line Driver / DAC Output Buffer
The AD8534ARZ-REEL buffers the differential output of audio DACs to drive 10 kΩ line inputs with rail-to-rail swing on a 5 V supply. Two channels of the AD8534 form a differential-to-single-ended line driver with 250 mA of headroom to drive capacitive cable loads without oscillation. The 0.0007% THD+N typical at 1 kHz makes it suitable for consumer-grade line outputs where audiophile performance is not required. Source: AD8531/8532/8534 datasheet line driver section.
Recommandé
Small DC Motor / Solenoid Driver
Each channel of the AD8534ARZ-REEL can drive small DC motors, relays or solenoids up to 250 mA directly, replacing discrete transistor driver circuits in compact designs. With four channels per package, a single AD8534 can control four solenoid valves in a fluid-handling system or four relays in a test-and-measurement switching matrix. The class-AB output stage handles back-EMF from inductive loads better than typical CMOS op amps, though an external flyback diode is still recommended. Source: AD8531/8532/8534 datasheet output drive capability.
Recommandé
Récapitulatif des produits recommandés
Données de référence d'ingénierie pour AD8534ARZ-REEL — comparaison, recommandations de conception et informations de conformité.
Guide de sélection
Comparaison avec les alternatives
| Paramètre | Ce produit | AD8534ARZ | AD8534ARUZ | MCP6004-E/SL | LMV324IPWR |
|---|---|---|---|---|---|
| Brand | Analog Devices | Analog Devices | Analog Devices | Microchip Technology | Texas Instruments |
| Package | 14-SOIC (R) | 14-SOIC (R) - same | 14-TSSOP (RU) | 14-SOIC - same | 14-TSSOP (PW) |
| Channels | 4 | 4 | 4 | 4 | 4 |
| Output Drive Current | ±250 mA | ±250 mA | ±250 mA | 20 mA | 40 mA |
| Gain-Bandwidth Product | 3 MHz | 3 MHz | 3 MHz | 1 MHz | 1 MHz |
| Slew Rate | 5 V/µs | 5 V/µs | 5 V/µs | 0.6 V/µs | 1 V/µs |
| Quiescent Current (per amp) | 750 µA | 750 µA | 750 µA | 100 µA | 170 µA |
| Rail-to-Rail I/O | Yes (input and output) | Yes | Yes | Yes | Yes (output); R-R input |
| Supply Voltage (Single) | 2.7 V to 6 V | 2.7 V to 6 V | 2.7 V to 6 V | 1.8 V to 6 V | 2.7 V to 5.5 V |
| Unit Price (qty 100, USD) | 2.18 | 2.18 | 2.45 | 0.65 | 0.42 |
Principaux différenciateurs
- Industry-leading 250 mA output drive per channel in 14-SOIC (vs MCP6004-E/SL)
- Rail-to-rail input AND output in a single CMOS quad package (vs TL074CDR)
- 3 MHz GBP and 5 V/µs slew rate for full audio bandwidth (vs LMV324IPWR)
Notes de conception
Estimated: SOIC-14 has theta_JA of approximately 110 °C/W on a standard JEDEC 4-layer test board. With all 4 channels sourcing 100 mA simultaneously into a 1 V load above mid-supply (so each amplifier dissipates ~400 mW), total package dissipation reaches ~1.6 W and junction temperature rises about 176 °C above ambient. For continuous multi-channel high-current operation, use TSSOP-14 (lower theta_JA) or spread the load across multiple packages. Use copper pours on both top and inner layers to reduce theta_JA.
Place 0.1 µF ceramic bypass capacitors between V+ (pin 4) and V- (pin 8) as close to the package as possible (within 3 mm). For multi-channel high-current operation add a bulk 10 µF tantalum or ceramic capacitor near the supply pins. The exposed copper pad on the SOIC-14 footprint (no thermal pad on this package) is not present; ground flooding on the top layer provides both thermal relief and ground return for output currents. Keep input and output traces short to minimize parasitic capacitance that can interact with the 5 V/µs slew rate.
Do not exceed 6 V on the supply pin - the AD8534 is rated 2.7 V to 6 V single-supply and exceeds abs-max at 7 V. Do not assume the 250 mA output is short-circuit protected: while the part includes internal current limiting, sustained shorts across all four channels can trigger thermal shutdown or damage the package. For driving inductive loads (relays, solenoids, motors) always include a flyback diode across the load. When operating from a single supply, tie V- (pin 8) directly to ground - this is the standard single-supply configuration.
Informations de conformité
RoHS and REACH compliant per Analog Devices product page. Lead-free finish. Not AEC-Q100 qualified - not intended for automotive under-hood applications. Halogen-free per Analog Devices green compliance policy.
