AD734ANZ - 10MHz 4-Quadrant Analog Multiplier/Divider | ADI
부품 번호: AD734ANZ ✓ 활성| 수량 | 단가 | 합계 |
|---|---|---|
| 1 | $40.2 | $40.20 |
| 10 | $36.18 | $361.80 |
| 100 | $32.16 | $3,216.00 |
| 500 | $28.94 | $14,470.00 |
| 1,000 | $26.73 | $26,730.00 |
AD734ANZ 개요
An analog multiplier is a fundamental signal-processing building block that performs real-time multiplication of two continuous-time analog signals, and is used as the core cell inside gain-controlled amplifiers, modulators, RMS-to-DC converters, squarers, frequency doublers, and dividers. Multipliers are a sub-category of analog computational ICs alongside log/antilog amplifiers, true-RMS converters, and analog multipliers/dividers, all of which sit within the broader signal-conditioning and data-conversion hierarchy. The 4-quadrant designation means that the inputs X, Y, and U may each be positive or negative, and the output W may therefore be positive or negative, enabling two-polarity signal processing without external offset shifting.
Key features of the AD734ANZ include pin-compatibility with the legacy industry-standard AD534, on-board thin-film laser-trimmed resistors that yield 0.1% typical accuracy without user adjustment, differential X, Y, and U inputs with high common-mode rejection, a low-impedance output capable of driving heavy loads, and a 200 ns settling time to 0.1% at full power. The supply range of ±8 V to ±16.5 V makes it suitable for both ±12 V industrial systems and ±15 V instrumentation rails.
The AD734's architecture is built around three translinear cells and a high-gain output op amp, with on-chip laser-trimmed thin-film resistors that eliminate the external gain-setting components required by older multipliers such as the AD534. The low-impedance output stage can deliver full 20 V p-p directly into low-impedance loads, removing the need for an external buffer in most applications. Compared with the AD633 and MPY634, the AD734 is materially faster (10 MHz vs ~1 MHz) and supports a true divider mode through its U input.
Typical applications include high-speed precision multipliers, dividers, and squarers in instrumentation; voltage-controlled amplifiers (VCAs) and automatic gain control (AGC) loops in audio and RF; balanced modulators and demodulators in communications; true-RMS converters when paired with a squaring circuit; and waveform generators. The wide bandwidth also makes it suitable for adaptive filters and real-time signal-conditioning blocks.
When designing with the AD734ANZ, observe the supply-rail decoupling guidelines: place 100 nF ceramic capacitors as close as possible to both supply pins and use bulk decoupling on the analog rails. The U input (denominator) must remain inside its linear input range (typically ±10 V) to avoid divider saturation; unused inputs should be tied to a defined voltage (typically ground) rather than left floating.
드롭인 대체품: AD734ANZ — 동일 패키지, 핀 호환. PCB 재작업이 필요한 다른 패키지 부품은 제외됩니다.
빠른 비교 도구 — 나란히 비교할 대체 부품을 선택하십시오:
AD734BNZ
✅ 드롭인📋 참조 대체품 (카탈로그에 없음)
AD734AN
✅ 드롭인📋 참조 대체품 (카탈로그에 없음)
AD534ANZ
✅ 드롭인📋 참조 대체품 (카탈로그에 없음)
AD734SQ
✅ 드롭인📋 참조 대체품 (카탈로그에 없음)
MPY634KP
✅ 드롭인📋 참조 대체품 (카탈로그에 없음)
AD734ANZ 최대 정격 & 전기적 특성
| 기능 | 4-Quadrant Analog Multiplier/Divider |
| Transfer Function | W = (X * Y) / U |
| Number of Multipliers/Dividers | 1 |
| Number of Internal Op Amps | 4 |
| Full-Power Bandwidth | 10 MHz |
| Slew Rate | 450 V/us |
| Multiplication Accuracy | 0.1% typical (4-quadrant error) |
| Settling Time | 200 ns to 0.1% at full power |
| Supply Voltage Range | +/-8 V to +/-16.5 V |
| Output Voltage Swing | +/-10 V (20 V p-p) into load |
| 출력 유형 | Low-impedance voltage output |
| Input Type | Differential X, Y, U inputs |
| 동작 온도 범위 | -40 C to +85 C |
| 패키지 | 14-PDIP (N-14), 0.300 inch (7.62 mm) through-hole |
| Pin Compatibility | Drop-in upgrade for AD534 |
| 실장 유형 | Through-Hole |
| RoHS 상태 | Compliant (Pb-free N suffix) |
| MSL 레벨 | 1 (Unlimited, per PartGenie) |
AD734ANZ 핀 구성
| 핀 1 | X1 — Non-inverting X differential input |
| 핀 2 | X2 — Inverting X differential input |
| 핀 3 | Y1 — Non-inverting Y differential input |
| 핀 4 | Y2 — Inverting Y differential input |
| 핀 5 | OP OUT — Auxiliary op-amp output |
| 핀 6 | OP IN- — Auxiliary op-amp inverting input |
| 핀 7 | +VS — Positive supply (+8 V to +16.5 V) |
| 핀 8 | VN — Denominator common / bias reference |
| 핀 9 | ER — Internal reference voltage output |
| 핀 10 | W — Multiplication/division output |
| 핀 11 | U2 — Inverting U (denominator) differential input |
| 핀 12 | U1 — Non-inverting U (denominator) differential input |
| 핀 13 | OP IN+ — Auxiliary op-amp non-inverting input |
| 핀 14 | -VS — Negative supply (-8 V to -16.5 V) |
일반적인 애플리케이션
AD734ANZ 적합 용도: 7 애플리케이션s: High-Speed Precision Multiplier, Voltage-Controlled Amplifier (VCA) and AGC, Balanced Modulator and Demodulator, True RMS-to-DC Converter, Waveform Generator and Frequency Doubler, Precision Divider for ratiometric measurement, Automatic Test Equipment (ATE) Stimulus.
High-Speed Precision Multiplier
The AD734ANZ performs real-time four-quadrant multiplication of two differential analog signals with 10 MHz full-power bandwidth and 0.1% typical accuracy, directly supporting precision signal-processing applications such as gain-controlled amplifiers, squarers, and adaptive filters. The 450 V/us slew rate and 200 ns 0.1% settling time preserve signal integrity at audio, IF, and baseband frequencies. Designers typically place the part between a low-noise op amp front end (e.g. AD797) and a precision ADC, using 100 nF ceramic decoupling on both supply pins. Compared with the AD633 1 MHz part, the AD734ANZ offers ten times the bandwidth without sacrificing the W=XY/U transfer function.
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Voltage-Controlled Amplifier (VCA) and AGC
The AD734ANZ forms the core of a high-speed VCA or AGC loop by placing the audio / IF signal on the X input and the gain-control voltage on the Y input, with U tied to a fixed reference. Its 10 MHz full-power bandwidth allows gain modulation well beyond the audio band, supporting compandors, noise gates, and RF AGC stages. The 0.1% typical multiplication accuracy and plus/minus 10 V output swing keep distortion and noise floor low even at large signal levels. Pair the multiplier with an AD712 output buffer and an AD737 true-RMS detector to close the AGC feedback loop with predictable time constant.
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Balanced Modulator and Demodulator
In communications transceivers the AD734ANZ operates as a balanced modulator by placing the baseband signal on the X input and the local-oscillator carrier on the Y input, with U tied to a stable DC reference; the resulting double-sideband suppressed-carrier output appears on W. Its 10 MHz bandwidth covers IF stages up through 10.7 MHz and its 0.1% linearity minimises carrier leak and intermodulation products. For synchronous demodulation the same part multiplies the received IF by a recovered carrier and recovers the baseband via a downstream op-amp low-pass filter. The 14-pin PDIP form factor is convenient for laboratory and instrumentation receivers.
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True RMS-to-DC Converter
A complete true-RMS-to-DC converter can be built around the AD734ANZ by squaring the input on the X and Y inputs (X=Y=Vin), low-pass filtering the W output to obtain mean-square, and then taking the square root with a second multiplier in a feedback loop. The 0.1% multiplication accuracy gives better than 0.3% RMS accuracy for crest factors up to 3, and the 10 MHz bandwidth preserves waveform fidelity well beyond the audio band. This topology outperforms the AD737 monolithic RMS converter at high frequencies and in low-distortion instrumentation. The plus/minus 15 V supply allows direct interface to plus/minus 10 V instrumentation signal chains.
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Waveform Generator and Frequency Doubler
The AD734ANZ generates frequency-doubled waveforms by multiplying a sine wave on X by the same sine on Y (X=Y=Vin), producing a cos(2wt) term at the W output after low-pass filtering. The 10 MHz bandwidth supports doublers well into the megahertz range, and the differential Y input allows injection of a phase-shifted carrier for single-sideband generation. A second AD734ANZ in divider configuration (W=(X*Y)/U) can synthesise ratio-metric functions or amplitude-modulated envelopes. The 14-pin PDIP is breadboard-friendly for laboratory waveform-synthesis instruments.
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Precision Divider for ratiometric measurement
By driving the U (denominator) input with a feedback-derived signal and the X, Y inputs with the dividend and a constant reference, the AD734ANZ performs accurate 4-quadrant division with 0.1% linearity over the full plus/minus 10 V input range. This makes the part suitable for ratiometric measurements such as gain-error trimming, automatic test equipment (ATE) stimulus calibration, and sensor linearisation (thermocouple, RTD, bridge). The 10 MHz closed-loop bandwidth lets the divider track dynamic references in real time, enabling closed-loop control systems that require fast, accurate ratio computation.
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Automatic Test Equipment (ATE) Stimulus
The AD734ANZ delivers calibrated stimulus in ATE by multiplying a high-resolution DAC-driven reference (Y input) by a precision DC level (X input), producing an accurate, programmable output on W. Its 0.1% multiplication accuracy and 200 ns settling time enable sub-microsecond stimulus steps for production testers, and the 20 V peak-to-peak swing directly drives plus/minus 10 V instrumentation inputs without level shifting. Used as a divider in feedback it also serves as a precision gain-control element, holding output constant despite supply or temperature variation. The 14-pin PDIP is convenient for through-hole ATE fixture boards.
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추천 제품 요약
엔지니어링 참조 데이터: AD734ANZ — 비교, 설계 지침 및 규정 준수 정보.
선택 가이드
대체품과의 비교
| 파라미터 | 이 제품 | AD734BNZ | AD534ANZ | AD734SQ | MPY634KP | AD734AN |
|---|---|---|---|---|---|---|
| Brand | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Texas Instruments | Analog Devices |
| Package | 14-PDIP (N-14) through-hole | 14-PDIP (N-14) through-hole - same | 14-PDIP (N-14) through-hole - same | 14-CDIP (ceramic DIP) - same footprint, ceramic body | 14-PDIP (N-14) - same (but different pinout) | 14-PDIP (N-14) through-hole - same |
| Full-Power Bandwidth | 10 MHz | 10 MHz | 1 MHz (-90%) | 10 MHz | 1 MHz (-90%) | 10 MHz |
| Slew Rate | 450 V/us | 450 V/us | 20 V/us (-95%) | 450 V/us | 20 V/us (-95%) | 450 V/us |
| Multiplication Accuracy | 0.1% typical | <0.1% (B grade) | 1% typical | 0.1% screened | 0.5% typical | 0.1% typical |
| Divider Mode (U input) | Yes (true 4-quadrant division) | Yes | No (no U input) | Yes | No | Yes |
| Supply Voltage Range | +/-8 V to +/-16.5 V | +/-8 V to +/-16.5 V | +/-8 V to +/-18 V | +/-8 V to +/-16.5 V | +/-8 V to +/-18 V | +/-8 V to +/-16.5 V |
| Operating Temperature | -40 C to +85 C | -40 C to +85 C | 0 C to +70 C (J grade) | -55 C to +125 C (military) | -40 C to +85 C | -40 C to +85 C |
| RoHS Compliance | Yes (Pb-free Z suffix) | Yes | Yes | No (military) | Yes | No (legacy Pb) |
주요 차별점
- 10 MHz full-power bandwidth with true 4-quadrant division (vs MPY634KP (TI))
- Low-impedance 20 V p-p output drives loads directly (vs AD633ANZ)
- 0.1% typical multiplication accuracy, laser trimmed on-chip (vs AD534ANZ)
설계 노트
Power the AD734ANZ from low-impedance plus/minus 8 V to plus/minus 16.5 V rails. According to the AD734 datasheet, place 100 nF ceramic decoupling capacitors as close as possible to both supply pins (pins 7 and 14) and add 10 uF bulk decoupling on the analog rails. The output stage draws significant current during slewing; ensure the supply can deliver the worst-case transient without droop, since supply modulation couples directly into the W output through the PSRR path.
Use a ground plane and keep the analog ground return path short and direct. Route the X, Y, and U differential traces as matched-length pairs to preserve common-mode rejection, and place the AD734ANZ close to the upstream op-amp driver. Avoid routing digital signals or switching-converter traces across the analog inputs; the 10 MHz bandwidth makes the part susceptible to RF pickup, so shielding or guard traces may be required in electrically noisy environments.
Do not leave the U (denominator) inputs floating when the part is configured as a multiplier; tie U1 to a defined reference (typically ground via a low-impedance source) and let U2 be internally biased through the typical-application circuit, otherwise divider mode may saturate. According to the datasheet, the U input common-mode range must stay inside roughly plus/minus 10 V for accurate division. For multiplier-only applications, follow the standard connection (U1 tied to VN/ground reference) shown in the datasheet typical-application circuits.
Estimated: with plus/minus 15 V supplies and 20 V p-p output into a 2 kohm load, the AD734ANZ dissipates approximately 150 mW internally, well within the 14-pin PDIP thermal rating. At higher output currents or sustained full-power bandwidth, the dissipation can rise toward 500 mW; in such cases provide at least 1 square inch of copper pour around the device or upgrade to the surface-mount AD734 SOIC variant. The 14-pin PDIP theta_JA is approximately 90 C/W, giving a junction-to-ambient rise of 14 C at 150 mW.
규정 준수 정보
RoHS compliance inferred from Pb-free Z suffix in part number and from PartGenie compliance data (ROHS3 Compliant, REACH Unaffected, MSL 1 Unlimited). Not AEC-Q100 qualified - this is a through-hole industrial/instrumentation part, not an automotive-grade component. For military/aerospace programs use the AD734SQ/883B variant which is MIL-STD-883 screened.
