AD7609BSTZ - 18-Bit 8-Ch Simultaneous Sampling ADC | Analog Devices
MPN： AD7609BSTZ ✓ 啟用中AD7609BSTZ 概覽
A data acquisition system (DAS) is a complete signal chain that conditions, samples, and converts analog signals into digital data. The AD7609BSTZ belongs to the family of simultaneous sampling ADCs, which capture multiple channels at the same instant to preserve phase relationships between signals. This is critical in applications like three-phase power monitoring and multi-axis motor control, where timing skew between channels would introduce measurement errors. The DAS integrates the entire analog front end, reducing external component count and simplifying design.
Key features include 18-bit resolution with no missing codes, 200 kSPS throughput on all channels, true differential inputs with a ±5 V or ±10 V range, and a 2.5 V internal reference with buffer. The device offers both serial (SPI/DSP) and parallel interfaces, and includes a digital filter for noise reduction. The input clamp protection tolerates voltages up to ±16.5 V, enhancing robustness in industrial environments.
The AD7609BSTZ uses a charge redistribution successive approximation architecture, which provides excellent linearity and low power consumption. The integrated antialiasing filter simplifies external filtering requirements, and the track-and-hold amplifiers ensure accurate sampling of fast-changing signals. The device operates over the industrial temperature range of -40°C to +85°C and is available in a 64-lead LQFP (10x10 mm) package.
Typical applications include power line monitoring, protective relays, motor control, and industrial data acquisition systems. The simultaneous sampling capability is essential for measuring three-phase voltages and currents with accurate phase alignment. The wide input range and robust protection make it suitable for harsh industrial environments.
When designing with the AD7609BSTZ, ensure proper decoupling of the AVCC and DVCC supplies with 10 µF and 0.1 µF capacitors. The REFIN/REFOUT pin can be driven by an external reference for improved accuracy. The digital interface supports both serial and parallel modes, selectable via the PAR/SER/BYTE pin. For best performance, use a low-jitter conversion clock and minimize digital noise coupling to the analog inputs.
直接替換替代品，適用於 AD7609BSTZ — 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。
此系列的變體
與下列產品可直接替換的同系列型號： AD7609BSTZ （相同外形與佔位） — 差異在於 Resolution, Input Type, Interface, Internal Reference, Antialiasing Filter.
AD7606BSTZ
✅ 直接替換✗ 缺貨
$16.9 / 單位
查看資料表 →AD7606BSTZ-RL
✅ 直接替換聯絡詢價
查看資料表 →AD7609BSTZ-RL
✅ 直接替換📋 參考替代品（不在目錄中）
AD7606C-16BSTZ-RL
✅ 直接替換📋 參考替代品（不在目錄中）
AD7608BSTZ
✅ 直接替換 ⚠️ 規格未經驗證✗ 缺貨
$38.1818 / 單位
查看資料表 →AD7609BSTZ 最大額定值與電氣特性
| 解析度 | 18 bits |
| Number of Channels | 8 |
| Input Type | True differential |
| 輸入電壓範圍 | ±5 V or ±10 V |
| Throughput Rate | 200 kSPS |
| 供應電壓 | 5 V (single) |
| Internal Reference | 2.5 V |
| Input Clamp Protection | ±16.5 V |
| Analog Input Impedance | 1 MΩ |
| 介面 | SPI, DSP, parallel |
| 封裝 | 64-LQFP (10x10 mm) |
| 工作溫度範圍 | -40°C to +85°C |
| Antialiasing Filter | Second-order |
| Architecture | Charge redistribution SAR |
| RoHS | Compliant |
AD7609BSTZ 腳位配置
| 腳位 1 | AVCC — Analog supply voltage (5 V) |
| 腳位 2 | V1+ — Positive analog input channel 1 |
| 腳位 3 | V1- — Negative analog input channel 1 |
| 腳位 4 | V2+ — Positive analog input channel 2 |
| 腳位 5 | V2- — Negative analog input channel 2 |
| 腳位 6 | V3+ — Positive analog input channel 3 |
| 腳位 7 | V3- — Negative analog input channel 3 |
| 腳位 8 | V4+ — Positive analog input channel 4 |
| 腳位 9 | V4- — Negative analog input channel 4 |
| 腳位 10 | V5+ — Positive analog input channel 5 |
| 腳位 11 | V5- — Negative analog input channel 5 |
| 腳位 12 | V6+ — Positive analog input channel 6 |
| 腳位 13 | V6- — Negative analog input channel 6 |
| 腳位 14 | V7+ — Positive analog input channel 7 |
| 腳位 15 | V7- — Negative analog input channel 7 |
| 腳位 16 | V8+ — Positive analog input channel 8 |
| 腳位 17 | V8- — Negative analog input channel 8 |
| 腳位 18 | AGND — Analog ground |
| 腳位 19 | REFIN/REFOUT — Reference input/output |
| 腳位 20 | REFCAP — Reference buffer output |
| 腳位 21 | REFSELECT — Reference select (high = internal, low = external) |
| 腳位 22 | RANGE — Input range select (±5 V or ±10 V) |
| 腳位 23 | CONVST A — Conversion start for channels 1-4 |
| 腳位 24 | CONVST B — Conversion start for channels 5-8 |
| 腳位 25 | BUSY — Busy output (high during conversion) |
| 腳位 26 | FRSTDATA — First data output |
| 腳位 27 | OS0 — Oversampling ratio bit 0 |
| 腳位 28 | OS1 — Oversampling ratio bit 1 |
| 腳位 29 | OS2 — Oversampling ratio bit 2 |
| 腳位 30 | PAR/SER/BYTE — Parallel/serial/byte select |
| 腳位 31 | STBY — Standby mode input |
| 腳位 32 | CS — Chip select |
| 腳位 33 | RD/SCLK — Read/Serial clock |
| 腳位 34 | WR/DIN — Write/Serial data input |
| 腳位 35 | DB0 — Parallel data bit 0 |
| 腳位 36 | DB1 — Parallel data bit 1 |
| 腳位 37 | DB2 — Parallel data bit 2 |
| 腳位 38 | DB3 — Parallel data bit 3 |
| 腳位 39 | DB4 — Parallel data bit 4 |
| 腳位 40 | DB5 — Parallel data bit 5 |
| 腳位 41 | DB6 — Parallel data bit 6 |
| 腳位 42 | DB7 — Parallel data bit 7 |
| 腳位 43 | DB8 — Parallel data bit 8 |
| 腳位 44 | DB9 — Parallel data bit 9 |
| 腳位 45 | DB10 — Parallel data bit 10 |
| 腳位 46 | DB11 — Parallel data bit 11 |
| 腳位 47 | DB12 — Parallel data bit 12 |
| 腳位 48 | DB13 — Parallel data bit 13 |
| 腳位 49 | DB14 — Parallel data bit 14 |
| 腳位 50 | DB15 — Parallel data bit 15 |
| 腳位 51 | DVCC — Digital supply voltage (5 V) |
| 腳位 52 | DGND — Digital ground |
| 腳位 53 | VDRIVE — Logic supply voltage |
| 腳位 54 | RESET — Reset input |
| 腳位 55 | DOUTA — Serial data output A |
| 腳位 56 | DOUTB — Serial data output B |
| 腳位 57 | DB16 — Parallel data bit 16 |
| 腳位 58 | DB17 — Parallel data bit 17 |
| 腳位 59 | DB18 — Parallel data bit 18 |
| 腳位 60 | DB19 — Parallel data bit 19 |
| 腳位 61 | DB20 — Parallel data bit 20 |
| 腳位 62 | DB21 — Parallel data bit 21 |
| 腳位 63 | DB22 — Parallel data bit 22 |
| 腳位 64 | DB23 — Parallel data bit 23 |
典型應用
AD7609BSTZ 適用於 6 應用s: Power Line Monitoring, Motor Control, Industrial Data Acquisition, Protective Relays, Three-Phase Power Quality Analysis, Multi-Axis Motion Control.
Power Line Monitoring
The AD7609BSTZ is ideal for power line monitoring due to its 8-channel simultaneous sampling capability and 18-bit resolution. It can measure three-phase voltages and currents with accurate phase alignment, which is critical for protective relays and power quality analysis. The wide input range (±5 V or ±10 V) and robust input protection (±16.5 V) handle the transients common in power systems. The 200 kSPS throughput ensures fast response to grid events, while the integrated antialiasing filter simplifies the analog front end. According to the AD7609 datasheet, the device's high input impedance (1 MΩ) eliminates the need for driver op amps, reducing component count and board space.
推薦
Motor Control
The AD7609BSTZ is well-suited for motor control applications, particularly field-oriented control (FOC) of AC motors. Its 8-channel simultaneous sampling capability allows precise measurement of multiple phase currents and voltages simultaneously, which is essential for accurate torque and speed control. The 18-bit resolution provides high precision, while the 200 kSPS throughput supports fast control loops. The true differential inputs reject common-mode noise, improving measurement accuracy in noisy industrial environments. According to the AD7609 datasheet, the device's integrated antialiasing filter and high input impedance simplify the analog front end, reducing design complexity and cost.
推薦
Industrial Data Acquisition
The AD7609BSTZ is a complete data acquisition system (DAS) that integrates the entire analog front end, making it ideal for industrial data acquisition applications. It features 8 true differential input channels with ±5 V or ±10 V ranges, 18-bit resolution, and 200 kSPS throughput. The device includes input clamp protection up to ±16.5 V, a second-order antialiasing filter, and a 2.5 V internal reference. According to the AD7609 datasheet, the high input impedance (1 MΩ) eliminates the need for external driver op amps, simplifying design. The serial and parallel interfaces provide flexibility for connecting to various microcontrollers and DSPs.
推薦
Protective Relays
The AD7609BSTZ is designed for protective relays in power systems, where accurate and simultaneous measurement of voltage and current is critical. Its 8-channel simultaneous sampling capability ensures phase alignment between channels, which is essential for calculating power and detecting faults. The 18-bit resolution provides high accuracy, while the 200 kSPS throughput enables fast response to transient events. The device's input clamp protection (±16.5 V) and wide input range (±5 V or ±10 V) handle the harsh conditions of power systems. According to the AD7609 datasheet, the integrated antialiasing filter and high input impedance simplify the analog front end, reducing component count and improving reliability.
推薦
Three-Phase Power Quality Analysis
The AD7609BSTZ is ideal for three-phase power quality analysis, where simultaneous sampling of multiple voltage and current channels is required to accurately compute power parameters such as active power, reactive power, and harmonics. The device's 8 channels can measure three-phase voltages and currents simultaneously, preserving phase relationships. The 18-bit resolution and 200 kSPS throughput provide the accuracy and speed needed for detailed harmonic analysis. According to the AD7609 datasheet, the true differential inputs reject common-mode noise, improving measurement accuracy in industrial environments. The integrated antialiasing filter simplifies external filtering, reducing design complexity.
推薦
Multi-Axis Motion Control
The AD7609BSTZ is suitable for multi-axis motion control systems, where simultaneous sampling of position and current feedback signals is essential for coordinated motion. Its 8-channel simultaneous sampling capability allows precise measurement of multiple axes at the same instant, ensuring accurate synchronization. The 18-bit resolution provides high precision, while the 200 kSPS throughput supports fast control loops. The true differential inputs reject common-mode noise, improving measurement accuracy in noisy industrial environments. According to the AD7609 datasheet, the device's integrated antialiasing filter and high input impedance simplify the analog front end, reducing design complexity and cost.
推薦
推薦產品摘要
工程參考資料，適用於 AD7609BSTZ — 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 | AD7606BSTZ | AD7606BSTZ-RL | AD7609BSTZ-RL | AD7606C-16BSTZ-RL | AD7608BSTZ |
|---|---|---|---|---|---|---|
| Package | 64-LQFP (10x10 mm) | 64-LQFP (10x10 mm) | 64-LQFP (10x10 mm) | 64-LQFP (10x10 mm) | 64-LQFP (10x10 mm) | 64-LQFP (10x10 mm) |
| Brand | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Analog Devices |
| Resolution | 18 bits | 16 bits | 16 bits | 18 bits | 16 bits | 14 bits |
| Number of Channels | 8 | 8 | 8 | 8 | 8 | 8 |
| Throughput Rate | 200 kSPS | 200 kSPS | 200 kSPS | 200 kSPS | 200 kSPS | 200 kSPS |
| Input Voltage Range | ±5 V or ±10 V | ±5 V or ±10 V | ±5 V or ±10 V | ±5 V or ±10 V | ±5 V or ±10 V | ±5 V or ±10 V |
| Interface | SPI, DSP, parallel | SPI, DSP, parallel | SPI, DSP, parallel | SPI, DSP, parallel | SPI, DSP, parallel | SPI, DSP, parallel |
| Supply Voltage | 5 V | 5 V | 5 V | 5 V | 5 V | 5 V |
主要差異化特點
- 18-bit resolution with 8 simultaneous sampling channels (對比AD7606BSTZ)
- True differential inputs with ±16.5 V clamp protection (對比AD7608BSTZ)
- 200 kSPS throughput on all channels simultaneously (對比AD7606C-16BSTZ-RL)
設計說明
Decouple the AVCC and DVCC supplies with 10 µF and 0.1 µF capacitors placed close to the pins. Use a low-impedance ground plane to minimize noise coupling. The AD7609BSTZ operates from a single 5 V supply, simplifying power design. According to the AD7609 datasheet, proper decoupling is essential for achieving the specified 18-bit performance.
Place the AD7609BSTZ on a PCB with a solid ground plane and separate analog and digital ground areas. Keep analog input traces short and shielded to minimize noise pickup. The device's high input impedance (1 MΩ) reduces the need for driver op amps, but proper layout is still critical for maintaining signal integrity. According to the AD7609 datasheet, the input clamp protection tolerates voltages up to ±16.5 V, providing robustness in industrial environments.
Ensure the REF SELECT pin is set correctly: high for internal reference, low for external. If using an external reference, apply it to the REFIN pin. The RANGE pin selects ±5 V or ±10 V input range; set it according to your signal levels. According to the AD7609 datasheet, the PAR/SER/BYTE pin selects the interface mode; ensure it is configured correctly for your microcontroller. Avoid exceeding the absolute maximum ratings on any pin.
合規資訊
RoHS compliance confirmed by distributor listings. Other compliance data not explicitly stated in the provided data.
