LTC1416CG - 14-Bit 400ksps Low-Power ADC | Analog Devices
MPN： LTC1416CG ✓ 啟用中LTC1416CG 概覽
A sampling ADC is a data-converter category that uses a sample-and-hold circuit and successive-approximation conversion to translate an analog voltage into a digital code. The LTC1416 belongs to the ADC, data-converter, signal-processing, and semiconductor hierarchy. Its high dynamic-range sample-and-hold front end makes it suitable for precision instrumentation, industrial measurement, data acquisition, and control systems that require accurate conversion without a high-power switching architecture.
The principal characteristics are 14-bit resolution, 400 ksps throughput, and 2.2 microsecond conversion time. The Analog Devices datasheet also identifies ±2 LSB maximum integral nonlinearity, ±1.5 LSB maximum differential nonlinearity, and operation from ±5 V supplies. Two digitally selectable shutdown modes help reduce power consumption when conversion activity is intermittent. The converter supports internal or external reference operation and includes a precision reference according to the manufacturer product information.
The parallel-output architecture supports direct connection to digital control logic when the converter is mounted close to the processor or FPGA. A SAR ADC is useful when deterministic latency, moderate resolution, and modest conversion rates matter more than very high throughput. This combination of 14-bit resolution, 400 ksps sampling, selectable shutdown modes, and bipolar input range allows the LTC1416 to balance measurement resolution, throughput, power use, and implementation complexity.
Typical uses include process-control loops, analog sensor acquisition, laboratory measurement instruments, industrial data-logging equipment, and embedded systems that sample slowly varying or moderately changing analog signals. The internal reference can simplify designs where an external precision reference would add cost and board area, while external-reference operation offers a path for shared references or calibration schemes.
When laying out the circuit, place input, reference, and bypass connections to minimize pickup around the high-impedance analog input. Use the manufacturer pin-description table when assigning signals and observe the specified acquisition, conversion, and shutdown timing. Check the power-supply requirements and reference selection carefully because incorrect sequencing or bypassing can degrade accuracy even when the nominal sampling rate is suitable.
This product overview consolidates the converter's resolution, throughput, input range, power characteristics, shutdown options, and package details into an engineering-oriented selection reference. It also distinguishes verified pin-compatible family alternatives from broader functional ADC choices, helping designers evaluate PCB reuse, interface compatibility, and measurement requirements before committing to a layout.
直接替換替代品，適用於 LTC1416CG — 相同封裝，腳位對腳位相容。需重新設計 PCB 的不同封裝零件不列入。
LTC1416IG
✅ 直接替換📋 參考替代品（不在目錄中）
LTC1416CG 最大額定值與電氣特性
| ADC Type | 14-bit successive-approximation sampling ADC |
| 解析度 | 14 bit |
| 取樣率 | 400 ksps |
| Conversion Time | 2.2 us |
| Full-Scale Input Range | -2.5 V to +2.5 V |
| 供應電壓 | ±5 V |
| Power Dissipation | 70 mW from ±5 V supplies |
| Integral Nonlinearity | ±2 LSB maximum |
| Differential Nonlinearity | ±1.5 LSB maximum |
| Signal-to-Noise Plus Distortion | 80.5 dB at 100 kHz |
| Total Harmonic Distortion | 93 dB at 100 kHz |
| Reference | Internal or external reference operation |
| Shutdown Modes | 2 digitally selectable modes |
| Number of Inputs | 1 input |
| 介面 | Parallel |
| 封裝 | 28-pin SSOP |
| 安裝類型 | Surface mount |
LTC1416CG 28-pin ssop 腳位配置指南
LTC1416CG（28-pin ssop 封裝）的腳位配置。 此類比元件具有輸入、輸出與電源腳位。偏移歸零、補償與致能腳位配置請參閱製造商資料表。適用於訊號調理與放大器電路。
無詳細腳位定義資料： LTC1416CG.
請參閱 資料表 以查看完整腳位配置。
典型應用
LTC1416CG 適用於 6 應用s: Industrial Process Measurement, Laboratory Data Acquisition, Embedded Sensor Acquisition, Industrial Control and Monitoring, Battery-Powered Portable Instrumentation, Analog Signal Conditioning Verification.
Industrial Process Measurement
The LTC1416CG fits industrial process-measurement loops because it combines 14-bit resolution with a 400 ksps sampling rate and a 2.2 microsecond conversion time. The converter can acquire sensor or control signals faster than required by many slow industrial loops while retaining useful resolution for monitoring temperature, pressure, level, or process position. Its ±5 V supply arrangement and ±2.5 V bipolar input range suit conditioned analog signals, and the selectable shutdown modes can reduce consumption during inactive intervals. A 400 ksps-capable converter is particularly useful when several channels are multiplexed or when supervisory measurements must be inserted between faster control updates.
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Laboratory Data Acquisition
The LTC1416CG supports laboratory data-acquisition systems that require accurate bipolar measurements without the continuous power demand of a high-speed converter. Its 14-bit resolution, ±2 LSB maximum integral nonlinearity, and 400 ksps throughput provide a practical balance for general-purpose bench instruments. The internal reference can simplify standalone measurement modules, while external-reference support allows calibration across multiple channels. With a 2.2 microsecond conversion time, the ADC can gather samples rapidly enough for synchronized experiments, yet its 70 mW dissipation from ±5 V keeps thermal loading moderate in compact instrumentation.
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Embedded Sensor Acquisition
The LTC1416CG is appropriate for embedded systems that digitize conditioned outputs from pressure, temperature, position, and analog instrumentation sensors. Its 400 ksps maximum sampling rate provides more timing margin than many sensor subsystems require, while 14-bit resolution preserves useful measurement detail after signal conditioning. Two digitally selectable shutdown modes help embedded designs reduce power during idle periods, and the 70 mW operating dissipation from ±5 V supports compact multi-rail equipment. Designers should allocate acquisition time for the sample-and-hold input and keep the source impedance and bypass network consistent with the manufacturer guidance.
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Industrial Control and Monitoring
The LTC1416CG can serve as the analog measurement front end in industrial control equipment that monitors process variables and converts them for a digital controller. Its 2.2 microsecond conversion time permits timely acquisition, while 14-bit resolution supports accurate representation of normalized process signals. The parallel output interface can connect to a suitable microcontroller, DSP, or FPGA when signal timing is controlled explicitly. Selectable shutdown modes are useful in supervisory loops that sample intermittently, and the converter's ±2.5 V input range accepts bipolar signals produced by industrial transmitters after appropriate scaling and protection.
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Battery-Powered Portable Instrumentation
The LTC1416CG is useful in portable measurement equipment when low power and compact signal conversion are more important than multi-megasample throughput. Its 70 mW power dissipation from ±5 V provides a defined operating baseline, and two digitally selectable shutdown modes permit additional control when the instrument is idle. The 400 ksps sampling capability comfortably covers many portable sensor, diagnostic, and calibration functions. Because the converter uses bipolar input signaling and ±5 V supplies, the complete analog and power sections must remain within the specified operating limits; controlled shutdown sequencing should be used to prevent unintended conversion activity.
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Analog Signal Conditioning Verification
The LTC1416CG can evaluate analog signal-conditioning chains by converting conditioned bipolar outputs and providing a digital representation for analysis. Its 14-bit resolution and ±1.5 LSB maximum differential nonlinearity are meaningful when characterizing amplifier gain, offset, and filtering behavior. The 400 ksps rate supports rapid test sequences, while shutdown modes make it practical to compare active operation with low-power behavior. In a validation fixture, the ADC should share a stable reference strategy, have carefully controlled input settling, and be connected through a digital interface that preserves the conversion and output-update timing specified by the manufacturer.
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推薦產品摘要
工程參考資料，適用於 LTC1416CG — 比較、設計指引及合規資訊。
選型指南
與替代品比較
| 參數 | 本產品 | LTC1416IG |
|---|---|---|
| ADC Resolution | 14 bit | 14 bit |
| Sampling Rate | 400 ksps | 400 ksps |
| Conversion Time | 2.2 us | 2.2 us |
| Full-Scale Input Range | -2.5 V to +2.5 V | -2.5 V to +2.5 V |
| Supply Voltage | ±5 V | ±5 V |
| Power Dissipation | 70 mW from ±5 V supplies | 70 mW from ±5 V supplies |
| Package | SSOP-28 | SSOP-28 - same package |
| Brand | Analog Devices | Analog Devices |
| Temperature-Grade Ordering Code | C-grade suffix | I-grade suffix |
| Output Interface | Parallel | Parallel |
主要差異化特點
- Pin-compatible upgrade path within the same ADC family (對比LTC1416IG)
- Conversion speed balanced with low power (對比LTC1416IG)
- Measurement flexibility from reference and shutdown options (對比LTC1416IG)
設計說明
Place the analog input, reference, and bypass connections so that switching and digital return currents do not cross the sensitive converter area. Follow the reference-pin and layout guidance in the Analog Devices LTC1416 datasheet, including the recommended capacitor connections. Keep the parallel output traces short enough to avoid timing degradation, and provide a solid ground reference beneath the device. The 28-pin SSOP has narrow lead spacing, so inspect solder joints after assembly to confirm adequate fillet formation and clean signal return paths.
Budget the ±5 V supply network around the stated 70 mW operating dissipation and account for additional current when external-reference operation or output loading is used. Decouple each supply with the capacitance and placement specified by the manufacturer. Confirm startup and shutdown sequencing, especially if the analog input or external reference can remain energized while the converter is disabled. This prevents input-dependent current and protects the shutdown-state behavior expected by low-power instrumentation.
Do not treat the 2.2 microsecond conversion time as the complete acquisition interval. Allow the sample-and-hold input to settle for the duration specified by the manufacturer, and account for parallel-output update timing in the receiving logic. Avoid changing the reference during a conversion unless the application circuit explicitly supports that mode. Also distinguish LTC1416CG from LTC1416IG by environmental grade rather than assuming that identical pinouts make every ordering suffix interchangeable without qualification.
Keep the analog source impedance and leakage within the limits stated for the sample-and-hold input. Place input filtering close to the converter so that its capacitance does not prevent acquisition within the available conversion interval. Use a low-noise reference arrangement and route analog and digital grounds carefully to minimize converter transitions from appearing as input-referred noise. For systems carrying fast-edge digital outputs, isolate the analog section from the parallel-interface return path rather than relying on a common large ground plane alone.
合規資訊
The manufacturer product page and datasheet do not expose specific RoHS, REACH, halogen-free, or conflict-minerals declarations in the cited content. AEC-Q100 qualification is not applicable because this is an analog-to-digital converter rather than an automotive-qualified device.