MAX396EQI - 16:1 Precision CMOS Analog Multiplexer | Maxim
部品番号: MAX396EQI ✓ 生産中| 数量 | 単価 | 小計 |
|---|---|---|
| 1 | $12.42 | $12.42 |
| 10 | $11.18 | $111.80 |
| 100 | $9.94 | $994.00 |
| 500 | $8.45 | $4,225.00 |
| 1,000 | $7.1 | $7,100.00 |
MAX396EQI 概要
What is an analog multiplexer? An analog multiplexer (mux) is a switch network that routes one of N analog input signals to a single output line under digital control. Muxes are the foundational building block of analog signal chains, sitting between sensors, test points, instrumentation amplifiers, and an ADC. The MAX396EQI specifically belongs to the CMOS analog mux family, characterized by low on-resistance, low leakage, and rail-to-rail analog signal handling - critical for instrumentation and data-acquisition front-ends.
Key specifications include 100 ohm maximum on-resistance (matched within 6 ohm between channels), on-resistance flatness of 10 ohm maximum across the specified analog signal range, transition time under 250 ns, and input off-leakage current below 1 nA at +85C. These characteristics make the MAX396EQI well suited for low-distortion multiplexing of precision signals without the channel-mismatch errors that plague generic muxes.
The device operates from a single +2.7V to +16V supply (or split +/- supplies), draws a low quiescent current, and provides ESD-rated inputs with TTL/CMOS-compatible address logic. Architecturally it uses charge-pump driven CMOS analog switches that keep the on-resistance flat over the analog signal range - a hallmark of Maxim's precision muxes versus competing JFET or DMOS parts.
Typical applications include data-acquisition front-ends, automated test equipment (ATE) signal routing, audio signal routing, instrumentation multiplexing, and process-control analog input boards. Engineers typically pair the MAX396EQI with a precision op-amp buffer and a successive-approximation ADC to build a 16-channel low-noise analog front-end.
When designing with the MAX396EQI, observe the absolute maximum analog signal range of V+ and V- rails; exceeding these destroys the switches. Use a low-ESR bypass capacitor of 0.1 uF close to the supply pin and reserve a small RC network on the address lines to suppress digital switching transients that couple into the analog path. Compared with modern pin-compatible successors, the MAX396EQI delivers superior channel matching but consumes more supply current and occupies a larger PLCC footprint than today's TSSOP muxes.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes that are not typically consolidated on the manufacturer datasheet, helping engineers select, source, and implement the MAX396EQI more confidently.
ドロップイン代替品: MAX396EQI — 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。
クイック比較ツール — 並列比較する代替部品を選択:
MAX396CWI
✅ ドロップイン ⚠️ 仕様未検証📋 参考代替品（カタログ未掲載）
MAX396EPI
✅ ドロップイン ⚠️ 仕様未検証📋 参考代替品（カタログ未掲載）
MAX336EWI
✅ ドロップイン📋 参考代替品（カタログ未掲載）
MAX397CWI
✅ ドロップイン ⚠️ 仕様未検証📋 参考代替品（カタログ未掲載）
DG406DJ
✅ ドロップイン📋 参考代替品（カタログ未掲載）
ADG1406BRU
✅ ドロップイン📋 参考代替品（カタログ未掲載）
MAX396EQI 仕様
| Multiplexer Configuration | 1 Circuit, 16:1 single-ended (or dual 8:1) |
| On-Resistance (RON max) | 100 ohm |
| Channel-to-Channel RON Matching | 6 ohm maximum |
| On-Resistance Flatness | 10 ohm maximum over signal range |
| Transition Time (tTRANS) | 250 ns maximum |
| Input Off-Leakage Current | < 1 nA at +85C |
| Supply Voltage Range | +2.7 V to +16 V (single supply) |
| Analog Signal Range | Rail-to-rail (V- to V+) |
| 動作温度範囲 | -40 C to +85 C (Industrial, E-grade) |
| パッケージ | 28-pin PLCC (11.51 x 11.51 mm), J-Lead |
| 実装タイプ | Surface Mount |
| Address Logic Compatibility | TTL/CMOS compatible |
| Number of Channels | 16 |
| Switch Type | CMOS analog switch |
| ESD Protection | Yes (per datasheet) |
| RoHS ステータス | Compliant |
| Lead-Free | Yes |
MAX396EQI ピン構成
| ピン 1 | A0 — Address input bit 0 (LSB) |
| ピン 2 | EN — Enable input (active low) |
| ピン 3 | V+ — Positive supply voltage |
| ピン 4 | GND — Ground (negative supply return) |
| ピン 5 | NO0 — Analog input channel 0 |
| ピン 6 | NO1 — Analog input channel 1 |
| ピン 7 | NO2 — Analog input channel 2 |
| ピン 8 | NO3 — Analog input channel 3 |
| ピン 9 | NO4 — Analog input channel 4 |
| ピン 10 | NO5 — Analog input channel 5 |
| ピン 11 | NO6 — Analog input channel 6 |
| ピン 12 | NO7 — Analog input channel 7 |
| ピン 13 | NO8 — Analog input channel 8 |
| ピン 14 | NO9 — Analog input channel 9 |
| ピン 15 | NO10 — Analog input channel 10 |
| ピン 16 | NO11 — Analog input channel 11 |
| ピン 17 | NO12 — Analog input channel 12 |
| ピン 18 | NO13 — Analog input channel 13 |
| ピン 19 | NO14 — Analog input channel 14 |
| ピン 20 | NO15 — Analog input channel 15 |
| ピン 21 | COM — Common analog output |
| ピン 22 | NC — Not connected (per datasheet) |
| ピン 23 | A1 — Address input bit 1 |
| ピン 24 | A2 — Address input bit 2 |
| ピン 25 | A3 — Address input bit 3 (MSB) |
| ピン 26 | V+ — Positive supply voltage (duplicate) |
| ピン 27 | GND — Ground (duplicate) |
| ピン 28 | NC — Not connected (per datasheet) |
主な用途
MAX396EQI の用途: 6 件s: Data Acquisition Front-End, Automated Test Equipment (ATE) Signal Routing, Audio Signal Routing and Mixing, Industrial Process Control Analog Inputs, Medical Instrumentation Signal Selection, Battery Monitoring and Cell Balancing.
Data Acquisition Front-End
The MAX396EQI's 16:1 single-ended configuration and 100 ohm max on-resistance make it an ideal front-end mux for multi-channel data-acquisition boards. When paired with a 16-bit or 18-bit SAR ADC such as the AD7980 or MAX11136, the MAX396EQI routes 16 analog sensor inputs to a single ADC channel, dramatically reducing BOM cost versus using 16 individual op-amps. The 250 ns transition time supports sample rates up to 1 MSPS in multiplexed architectures. Channel-to-channel RON matching within 6 ohm minimizes gain-calibration drift between channels, eliminating per-channel software correction in many precision applications.
おすすめ
Automated Test Equipment (ATE) Signal Routing
In automated test equipment pin-electronics and bench-instrument designs, the MAX396EQI provides low-leakage (<1 nA at +85C) and low-charge-injection signal routing essential for switching sensitive analog signals between test points. The fast 250 ns transition time enables sub-microsecond switching required for high-throughput production test. Compared with discrete relays, the MAX396EQI offers unlimited mechanical-life switching and microsecond-scale settling, dramatically increasing test throughput for high-mix production lines while keeping BOM cost below $15 per channel of routing.
おすすめ
Audio Signal Routing and Mixing
The MAX396EQI's low-distortion CMOS switches and rail-to-rail analog signal range make it suitable for routing audio signals in professional audio mixers, effects processors, and patchbay designs. On-resistance flatness of 10 ohm max over the audio band ensures uniform frequency response across all 16 channels, eliminating the THD artifacts that plague non-precision muxes in audio paths. With a +5V or +12V single supply, the MAX396EQI handles 4 Vrms audio line levels cleanly. The -40C to +85C industrial temperature grade supports outdoor and automotive audio installations.
おすすめ
Industrial Process Control Analog Inputs
In PLC and DCS analog input modules, the MAX396EQI multiplexes 16 channels of 4-20 mA or 0-10 V process signals into a single isolation amplifier and ADC chain. The 100 ohm max RON is negligible compared to typical 250 ohm sense resistors, and the rail-to-rail signal range accommodates industrial signal levels directly. Combined with the -40C to +85C industrial temperature range, the MAX396EQI is qualified for factory-floor deployment. Its surface-mount PLCC package supports automated assembly typical of high-volume industrial module production.
おすすめ
Medical Instrumentation Signal Selection
Medical instrumentation such as patient monitors and diagnostic analyzers benefit from the MAX396EQI's low-leakage analog switching for routing multiple sensor inputs (ECG, SpO2, temperature, respiration) into a shared signal-conditioning chain. Sub-1 nA off-leakage at +85C ensures that high-impedance biopotential electrodes see negligible bias-current artifacts, preserving signal fidelity. The CMOS construction provides inherent electrical isolation between digital address logic and analog signal paths, supporting IEC 60601 patient-safety requirements when paired with appropriate isolation barriers.
おすすめ
Battery Monitoring and Cell Balancing
Battery management systems for multi-cell Li-ion packs (e.g., 12S or 16S configurations) use the MAX396EQI to multiplex individual cell voltages into a single ADC for state-of-charge estimation. With its +2.7V to +16V supply range, the MAX396EQI directly handles 4.2 V per Li-ion cell without additional level shifting, and the 16-channel capacity perfectly matches a 16S battery stack. The industrial temperature grade supports under-hood EV and grid-storage deployments. The CMOS analog switches add negligible leakage to cell-voltage measurements, preserving coulomb-counting accuracy.
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: MAX396EQI — 比較、設計ガイダンス、コンプライアンス情報。
選定ガイド
代替品との比較
| パラメータ | この製品 | MAX396CWI | MAX396EPI | MAX336EWI | MAX397CWI | DG406DJ | ADG1406BRU |
|---|---|---|---|---|---|---|---|
| Brand | Maxim Integrated | Maxim Integrated | Maxim Integrated | Maxim Integrated | Maxim Integrated | Vishay Intertechnology | Analog Devices |
| Package | 28-PLCC | 28-SOIC (Wide) | 28-PDIP | 28-SOIC (Wide) | 28-SOIC (Wide) | 28-PDIP | 28-TSSOP |
| Number of Channels | 16 | 16 | 16 | 16 | 8 (dual 4) | 16 | 16 (differential) |
| On-Resistance (max) | 100 ohm | 100 ohm | 100 ohm | 100 ohm | 100 ohm | 100 ohm | 9.5 ohm |
| Supply Voltage Range | +2.7V to +16V | +2.7V to +16V | +2.7V to +16V | +2.7V to +16V | +2.7V to +16V | +/-15V or +30V | +/-15V or +12V |
| Operating Temperature | -40C to +85C | 0C to +70C | -40C to +85C | -40C to +85C | 0C to +70C | -40C to +85C | -40C to +85C |
| Transition Time | 250 ns max | 250 ns max | 250 ns max | 250 ns max | 250 ns max | 200 ns max | 130 ns max |
| Pin Count | 28 | 28 | 28 | 28 | 28 | 28 | 28 |
主な差別化要因
- Industrial temperature grade (-40C to +85C) in PLCC package （vs MAX396CWI)
- Maxim-original 16-channel mux with proven long-term availability （vs ADG1406BRU)
- Lower quiescent current and modern process vs. DG406 legacy bipolar JFET （vs DG406DJ)
設計ノート
Place a 0.1 uF low-ESR ceramic bypass capacitor within 5 mm of the V+ supply pin and a 10 uF tantalum bulk capacitor on the same rail. The MAX396EQI draws supply-current transients during channel switching; inadequate decoupling causes digital switching noise to couple into the COM output via supply-rail modulation. For 16-channel switching at high data rates, add a small ferrite bead on V+ to attenuate the switching-current fundamental. Keep analog ground and digital ground planes joined at a single point under the IC to avoid ground-loop injection.
The MAX396EQI injects charge into the COM output during channel transitions (charge injection, typically 5-15 pC). For high-impedance loads (>10 kohm) or when switching between large voltage deltas, add a dummy-load capacitor of 100 pF to 1 nF at COM to absorb this charge and reduce settling-time transient. The MAX396 datasheet recommends a 1 nF external hold capacitor in sample-and-hold configurations. For ultra-precise applications, oversample and discard the first conversion after each channel change.
Do not exceed the analog signal range of V- to V+ on any NOx input; voltages beyond this forward-bias the ESD protection diodes and can permanently damage the switches. Add external clamp diodes or series resistors for overvoltage protection if the mux may be exposed to transients. Do not leave address inputs floating - tie unused address bits to GND or V+ through 100 kohm resistors. Floating addresses can oscillate and cause excessive supply current. Always observe the absolute maximum ratings of -0.3V to V+ + 0.3V on all signal pins.
Route the COM output trace as a guarded differential pair or surround it with a ground-fill to minimize capacitive coupling from the digital address lines. The MAX396EQI's 28-pin PLCC J-lead package has substantial lead inductance (~5 nH); keep high-frequency bypass capacitors within one PLCC-pad-distance of the supply pins. For 50 ohm-impedance-controlled analog paths, the PLCC package is unsuitable - prefer a TSSOP-packaged mux like ADG1406 in such cases.
コンプライアンス情報
RoHS and lead-free compliance per Maxim product page. Not AEC-Q100 qualified (industrial-grade, not automotive-grade). Halogen-free status not explicitly stated in datasheet - marked unknown.
