MAX11324ATJ+T - 10-Bit 1Msps SAR ADC, 8-Ch | Analog Devices
部品番号: MAX11324ATJ+T ✓ 生産中| 数量 | 単価 | 小計 |
|---|---|---|
| 1 | $7.62 | $7.62 |
| 10 | $6.85 | $68.50 |
| 100 | $5.94 | $594.00 |
| 500 | $5.31 | $2,655.00 |
| 1,000 | $4.72 | $4,720.00 |
MAX11324ATJ+T 概要
An SAR ADC is a successive-approximation-register analog-to-digital converter that performs a binary search against a reference voltage to resolve each conversion in N clock cycles, where N is the resolution in bits. SAR ADCs offer deterministic latency, no pipeline delay, and excellent dynamic performance at moderate sample rates, occupying the engineering niche between precision slow-sampling delta-sigma ADCs and high-speed pipeline ADCs. They are widely used in industrial process control, motor control, and multi-channel data-acquisition systems where low-latency deterministic sampling of multiple analog signals is required. The MAX11324 belongs to the broader category hierarchy: SAR ADC -> data converter -> ADC -> signal chain IC -> mixed-signal semiconductor.
Key features of the MAX11324ATJ+T include a 10-bit resolution (10-bit accuracy grade in the MAX11321-MAX11328 family), 1Msps maximum sample rate, 8 single-ended analog input channels, an integrated 8-to-1 input multiplexer with post-mux external signal-conditioning access, 1MHz full-linear-bandwidth track-and-hold, single 2.35V to 3.6V analog supply, an external reference input (REF) for design-driven full-scale range, an SPI/QSPI/MICROWIRE serial interface, low 5.6 mW power consumption at 1Msps, and an automatic channel-scan mode with internal averaging. The post-mux access to each analog input is a distinguishing feature that allows per-channel external amplifiers, filters, or attenuation networks to be inserted without disturbing the mux or track-and-hold.
The MAX11324ATJ+T uses a charge-redistribution DAC architecture with internal capacitors and an external reference, achieving INL of ±1 LSB (max), SNR of 61 dB (typ at 1Msps), and SINAD of 60 dB. The TQFN-32 package with exposed thermal pad (EP) provides a thermal resistance (theta_JA) suitable for operation across the -40C to +125C automotive temperature range. The device supports 0 to n x VREF input ranges when used with the internal PGA in adjacent family members, but here operates in single-ended unipolar mode against the external reference.
Typical applications include industrial process-control analog input modules, multi-channel sensor data acquisition, motor-control current/voltage monitoring, PLC analog input cards, battery-management telemetry, programmable logic controller (PLC) front-ends, and automotive sensor-cluster digitizers. The 8-channel single-ended input count, 1Msps sample rate, and small TQFN-32 footprint make it ideal for space-constrained multi-channel designs.
A key design consideration is decoupling: place a 10uF bulk plus 0.1uF ceramic bypass close to AVDD and DVDD pins, keep the analog and digital ground planes joined at a single point, and route the REF bypass (4.7uF) directly to the EP ground. Use short, symmetrical traces on the analog inputs to minimize channel-to-channel crosstalk.
This page synthesizes distributor pricing, drop-in pin-compatible alternatives, application notes, and practical design guidance for the MAX11324ATJ+T - content not found in the standalone manufacturer datasheet.
ドロップイン代替品: MAX11324ATJ+T — 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。
このシリーズのバリエーション
同一シリーズでドロップイン互換のモデル: MAX11324ATJ+T （同一形状・フットプリント） — 相違点: Package, Resolution, Input Type, Operating Temperature, Data Interface.
クイック比較ツール — 並列比較する代替部品を選択:
MAX11321ATJ+T
✅ ドロップイン✓ 在庫あり
$8.78 / 個
データシートを見る →MAX11325ATJ+T
✅ ドロップイン📋 参考代替品（カタログ未掲載）
MAX11326ATJ+T
✅ ドロップイン📋 参考代替品（カタログ未掲載）
MAX11328ATJ+T
✅ ドロップイン📋 参考代替品（カタログ未掲載）
MAX11120ATI+T
✅ ドロップイン✓ 在庫あり
$3.18 / 個
データシートを見る →MAX11164ETC+T
✅ ドロップイン✓ 在庫あり
$5.54 / 個
データシートを見る →MAX11324ATJ+T 最大定格＆電気的特性
| 分解能 | 10 bit |
| Sample Rate | 1 Msps |
| Number of Channels | 8 input (single-ended, via 8:1 mux) |
| Architecture | SAR (Successive Approximation Register) |
| Input Type | Single-ended, single-polarity |
| Analog Supply Voltage | 2.35 V to 3.6 V |
| Digital Supply Voltage | 1.5 V to 3.6 V |
| Reference Type | External |
| Input Bandwidth (-3 dB) | 1 MHz (full linear bandwidth) |
| INL (Max) | ±1 LSB |
| SNR (Typ, 1 Msps) | 61 dB |
| SINAD (Typ, 1 Msps) | 60 dB |
| Power Consumption (1 Msps) | 5.6 mW (typ) |
| インターフェース | SPI / QSPI / MICROWIRE-compatible serial |
| パッケージ | 32-pin TQFN (5x5 mm) with exposed pad |
| 動作温度 | -40 C to +125 C (automotive) |
| 実装タイプ | Surface Mount |
| Channel-Scan Mode | Yes (internal averaging supported) |
MAX11324ATJ+T ピン構成
| ピン 1 | AIN0 — Analog input channel 0 |
| ピン 2 | AIN1 — Analog input channel 1 |
| ピン 3 | AIN2 — Analog input channel 2 |
| ピン 4 | AIN3 — Analog input channel 3 |
| ピン 5 | AIN4 — Analog input channel 4 |
| ピン 6 | AIN5 — Analog input channel 5 |
| ピン 7 | AIN6 — Analog input channel 6 |
| ピン 8 | AIN7 — Analog input channel 7 |
| ピン 9 | MUXOUT — Mux output (post-mux signal-conditioning access) |
| ピン 10 | REF — External reference input |
| ピン 11 | AVDD — Analog supply voltage (2.35V-3.6V) |
| ピン 12 | AGND — Analog ground |
| ピン 13 | NC — Not connected |
| ピン 14 | NC — Not connected |
| ピン 15 | NC — Not connected |
| ピン 16 | NC — Not connected |
| ピン 17 | EOC — End-of-conversion output |
| ピン 18 | CNVST — Conversion start input |
| ピン 19 | CS — Chip select (active low) |
| ピン 20 | SCLK — Serial clock input |
| ピン 21 | DIN — Serial data input |
| ピン 22 | DOUT — Serial data output |
| ピン 23 | DGND — Digital ground |
| ピン 24 | DVDD — Digital supply voltage (1.5V-3.6V) |
| ピン 25 | NC — Not connected |
| ピン 26 | NC — Not connected |
| ピン 27 | NC — Not connected |
| ピン 28 | NC — Not connected |
| ピン 29 | NC — Not connected |
| ピン 30 | NC — Not connected |
| ピン 31 | NC — Not connected |
| ピン 32 | EP — Exposed thermal pad (connect to AGND) |
主な用途
MAX11324ATJ+T の用途: 6 件s: Industrial Process-Control Analog Input Module, Multi-Channel Sensor Data Acquisition System, Motor Control Current and Voltage Monitoring, PLC Analog Input Card, Battery Management Telemetry, Automotive Sensor Cluster Digitizer.
Industrial Process-Control Analog Input Module
The MAX11324ATJ+T's 8 single-ended channels, 1Msps throughput, and post-mux signal-conditioning access make it ideal for industrial process-control analog input modules that digitize 4-20 mA current loops, 0-10V voltage signals, and thermocouple outputs. The 1MHz full-linear-bandwidth input mux captures fast transients on each channel while the SAR architecture provides deterministic latency critical for closed-loop control. With 5.6 mW at full speed and 2.35V-3.6V supply, it integrates easily into 24V-bus-powered DIN-rail modules.
おすすめ
Multi-Channel Sensor Data Acquisition System
The MAX11324ATJ+T's 8:1 input mux and 1Msps sample rate suit multi-channel sensor data-acquisition systems that sample strain gauges, load cells, pressure sensors, and temperature bridges simultaneously. The post-mux external conditioning access lets designers insert per-channel instrumentation amps (e.g., MAX4475) and anti-alias filters between the mux and track-and-hold. SPI-compatible serial output reduces pin count versus parallel ADCs, freeing board space for sensor signal conditioning in compact data-logger designs.
おすすめ
Motor Control Current and Voltage Monitoring
In motor-control applications, the MAX11324ATJ+T's 1Msps sample rate and 8-channel density allow simultaneous sampling of 3-phase currents, DC-bus voltage, and temperature sensors in a single chip. SAR architecture gives deterministic conversion latency - critical when the ADC sample instant must align with PWM edges for accurate current reconstruction. The 5.6 mW power dissipation and small TQFN-32 footprint suit compact integrated power modules where board area is at a premium.
おすすめ
PLC Analog Input Card
The MAX11324ATJ+T fits programmable-logic-controller (PLC) analog input cards where 8 channels of 10-bit resolution digitize field-level analog signals (0-10V, 4-20 mA, RTD, thermocouple). The -40C to +125C automotive temperature grade supports the harsh industrial environment of factory floors and outdoor installations. Channel-scan mode with internal averaging reduces host CPU load by autonomously sequencing through channels and reporting averaged results.
おすすめ
Battery Management Telemetry
Battery-management systems (BMS) for lithium-ion packs use the MAX11324ATJ+T to monitor individual cell voltages, pack current, and temperature sensors. The 8 channels cover a typical 7S-8S battery pack's per-cell voltage taps plus auxiliary sensors in a single chip. The 1Msps burst-sampling capability supports pack-current pulse measurements during charge/discharge transients, while SPI interface simplifies galvanic-isolated communication with the battery monitor host MCU.
おすすめ
Automotive Sensor Cluster Digitizer
The MAX11324ATJ+T's -40C to +125C automotive temperature grade and small TQFN-32 footprint suit automotive sensor cluster digitizers that consolidate multiple analog sensors (pedal position, throttle, brake pressure, wheel speed) into a single ADC per ECU. The 1Msps throughput handles the fast-update-rate signals while the post-mux signal-conditioning access allows per-channel resistor-divider scaling without disturbing the mux or track-and-hold.
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: MAX11324ATJ+T — 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 | MAX11321ATJ+T | MAX11325ATJ+T | MAX11326ATJ+T | MAX11328ATJ+T | MAX11120ATI+T | MAX11164ETC+T |
|---|---|---|---|---|---|---|---|
| Package | TQFN-32 (5x5 mm) | TQFN-32 (5x5 mm) - same | TQFN-32 (5x5 mm) - same | TQFN-32 (5x5 mm) - same | TQFN-32 (5x5 mm) - same | TQFN-32 family | TQFN-32 family |
| Brand | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Analog Devices |
| Resolution | 10 bit | 12 bit | 12 bit | 12 bit | 12 bit | 12 bit | 12 bit |
| Sample Rate | 1 Msps | 1 Msps | 1 Msps | 1 Msps | 1 Msps | 1 Msps | 500 ksps |
| Number of Channels | 8 input (single-ended) | 4 input | 8 input | 16 input | 16 input | Multi-channel | Multi-channel |
| Architecture | SAR | SAR | SAR | SAR | SAR | SAR | SAR |
| Reference Type | External | External | External | External | External | External | External |
| Analog Supply | 2.35V to 3.6V | 2.35V to 3.6V | 2.35V to 3.6V | 2.35V to 3.6V | 2.35V to 3.6V | 3V (typ) | 3V (typ) |
| Interface | SPI / QSPI / MICROWIRE | SPI / QSPI / MICROWIRE | SPI / QSPI / MICROWIRE | SPI / QSPI / MICROWIRE | SPI / QSPI / MICROWIRE | SPI | SPI |
主な差別化要因
- Post-mux external signal-conditioning access （vs MAX11321ATJ+T)
- 10-bit resolution for noise-tolerant applications （vs MAX11328ATJ+T)
- Same TQFN-32 footprint as full family （vs MAX11164ETC+T)
設計ノート
Decouple AVDD with a 10uF bulk plus a 0.1uF ceramic placed within 5mm of the AVDD pin. Decouple DVDD with a separate 0.1uF ceramic within 5mm of the DVDD pin. Place the REF pin bypass (4.7uF ceramic) directly at the REF pin to the EP (analog ground). Use a ferrite bead between AVDD and the upstream switching regulator if present to filter switching noise; the SAR ADC's 61 dB SNR is easily degraded by high-frequency supply ripple.
Route the analog inputs (AIN0-AIN7) as short, symmetrical traces to minimize channel-to-channel crosstalk and to balance parasitic capacitance across channels. Keep analog input traces away from the SPI digital traces (CS, SCLK, DIN, DOUT) and away from the CNVST and EOC traces - cross-talk from digital edges into analog inputs is the most common source of degraded SNR. Use a continuous analog ground plane under the analog section and stitch vias around the TQFN-32 EP to provide low thermal resistance.
Connect the TQFN-32 exposed pad (EP, pin 32) directly to the analog ground plane using a 4x4 via array in 0.3mm pitch for low thermal resistance. The EP serves as both the primary thermal path and the analog ground reference; a poorly-connected EP raises junction temperature and increases noise. Keep digital ground return currents separate from analog ground currents - join AGND and DGND at a single point near the EP.
The post-mux external signal-conditioning access (MUXOUT pin) allows per-channel external amplifiers, anti-alias RC filters, or resistor-divider networks between the mux output and the track-and-hold input. Use this feature to scale high-voltage signals (e.g., 0-10V) into the ADC's 0-VREF range, or to insert a low-pass RC filter for high-frequency noise rejection. The T/H input presents a switched-capacitor load, so add a series resistor of 50-100 ohm at the MUXOUT pin to isolate the upstream amp from the T/H sampling transients.
Avoid exceeding the absolute maximum AVDD of 4.0V or DVDD of 4.0V - the part is not 5V tolerant. Ensure the external reference voltage does not exceed AVDD - 0.3V. Do not float the CS pin during operation - tie CS high (DVDD) for idle state, pull low for active communication. The MAX11324 does not include an internal reference - VREF must be provided externally with low noise (LT3042 or ADR4525 class) for full data-sheet performance.
コンプライアンス情報
RoHS and REACH compliant per manufacturer product page. -40C to +125C automotive temperature grade but not explicitly AEC-Q100 qualified in the datasheet. Lead-free and halogen-free per Maxim Integrated product marking.
