AD7609BSTZ - 18-Bit 8-Ch Simultaneous Sampling ADC | Analog Devices
MPN: AD7609BSTZ ✓ فعالAD7609BSTZ نمای کلی
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.
جایگزین‌های drop-in برای AD7609BSTZ — همان پکیج، سازگار پین‌به‌پین. قطعات با پکیج متفاوت که نیاز به تغییر PCB دارند مستثنی هستند.
گونه‌ها در این سری
مدل‌های هم‌سری که جایگزین مستقیم هستند برای AD7609BSTZ (همان فرم‌فاکتور و فوت‌پرینت) — متفاوت در Resolution, Input Type, Interface, Internal Reference, Antialiasing Filter.
AD7606BSTZ
✅ جایگزین مستقیمبرای قیمت تماس بگیرید
مشاهده دیتاشیت ←AD7606BSTZ-RL
✅ جایگزین مستقیمبرای قیمت تماس بگیرید
مشاهده دیتاشیت ←AD7609BSTZ-RL
✅ جایگزین مستقیم📋 جایگزین مرجع (خارج از کاتالوگ)
AD7606C-16BSTZ-RL
✅ جایگزین مستقیم📋 جایگزین مرجع (خارج از کاتالوگ)
AD7608BSTZ
✅ جایگزین مستقیم ⚠️ مشخصات تأییدنشدهبرای قیمت تماس بگیرید
مشاهده دیتاشیت ←AD7609BSTZ حداکثر مقادیر مجاز و مشخصات الکتریکی
| رزولوشن | 18 bits |
| Number of Channels | 8 |
| Input Type | True differential |
| محدوده ولتاژ ورودی | ±5 V or ±10 V |
| Throughput Rate | 200 kSPS |
| ولتاژ تغذیه | 5 V (single) |
| Internal Reference | 2.5 V |
| Input Clamp Protection | ±16.5 V |
| Analog Input Impedance | 1 MΩ |
| رابط | SPI, DSP, parallel |
| بسته‌بندی | 64-LQFP (10x10 mm) |
| محدوده دمای کاری | -40°C to +85°C |
| Antialiasing Filter | Second-order |
| Architecture | Charge redistribution SAR |
| RoHS | Compliant |
پیکربندی پین AD7609BSTZ
| پین 1 | AVCC — Analog supply voltage (5 V) |
| پین 2 | V1+ — Positive analog input channel 1 |
| پین 3 | V1- — Negative analog input channel 1 |
| پین 4 | V2+ — Positive analog input channel 2 |
| پین 5 | V2- — Negative analog input channel 2 |
| پین 6 | V3+ — Positive analog input channel 3 |
| پین 7 | V3- — Negative analog input channel 3 |
| پین 8 | V4+ — Positive analog input channel 4 |
| پین 9 | V4- — Negative analog input channel 4 |
| پین 10 | V5+ — Positive analog input channel 5 |
| پین 11 | V5- — Negative analog input channel 5 |
| پین 12 | V6+ — Positive analog input channel 6 |
| پین 13 | V6- — Negative analog input channel 6 |
| پین 14 | V7+ — Positive analog input channel 7 |
| پین 15 | V7- — Negative analog input channel 7 |
| پین 16 | V8+ — Positive analog input channel 8 |
| پین 17 | V8- — Negative analog input channel 8 |
| پین 18 | AGND — Analog ground |
| پین 19 | REFIN/REFOUT — Reference input/output |
| پین 20 | REFCAP — Reference buffer output |
| پین 21 | REFSELECT — Reference select (high = internal, low = external) |
| پین 22 | RANGE — Input range select (±5 V or ±10 V) |
| پین 23 | CONVST A — Conversion start for channels 1-4 |
| پین 24 | CONVST B — Conversion start for channels 5-8 |
| پین 25 | BUSY — Busy output (high during conversion) |
| پین 26 | FRSTDATA — First data output |
| پین 27 | OS0 — Oversampling ratio bit 0 |
| پین 28 | OS1 — Oversampling ratio bit 1 |
| پین 29 | OS2 — Oversampling ratio bit 2 |
| پین 30 | PAR/SER/BYTE — Parallel/serial/byte select |
| پین 31 | STBY — Standby mode input |
| پین 32 | CS — Chip select |
| پین 33 | RD/SCLK — Read/Serial clock |
| پین 34 | WR/DIN — Write/Serial data input |
| پین 35 | DB0 — Parallel data bit 0 |
| پین 36 | DB1 — Parallel data bit 1 |
| پین 37 | DB2 — Parallel data bit 2 |
| پین 38 | DB3 — Parallel data bit 3 |
| پین 39 | DB4 — Parallel data bit 4 |
| پین 40 | DB5 — Parallel data bit 5 |
| پین 41 | DB6 — Parallel data bit 6 |
| پین 42 | DB7 — Parallel data bit 7 |
| پین 43 | DB8 — Parallel data bit 8 |
| پین 44 | DB9 — Parallel data bit 9 |
| پین 45 | DB10 — Parallel data bit 10 |
| پین 46 | DB11 — Parallel data bit 11 |
| پین 47 | DB12 — Parallel data bit 12 |
| پین 48 | DB13 — Parallel data bit 13 |
| پین 49 | DB14 — Parallel data bit 14 |
| پین 50 | DB15 — Parallel data bit 15 |
| پین 51 | DVCC — Digital supply voltage (5 V) |
| پین 52 | DGND — Digital ground |
| پین 53 | VDRIVE — Logic supply voltage |
| پین 54 | RESET — Reset input |
| پین 55 | DOUTA — Serial data output A |
| پین 56 | DOUTB — Serial data output B |
| پین 57 | DB16 — Parallel data bit 16 |
| پین 58 | DB17 — Parallel data bit 17 |
| پین 59 | DB18 — Parallel data bit 18 |
| پین 60 | DB19 — Parallel data bit 19 |
| پین 61 | DB20 — Parallel data bit 20 |
| پین 62 | DB21 — Parallel data bit 21 |
| پین 63 | DB22 — Parallel data bit 22 |
| پین 64 | DB23 — Parallel data bit 23 |
کاربردهای معمول
AD7609BSTZ مناسب است برای 6 کاربردs: 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.
پیشنهادی
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.
پیشنهادی
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.
پیشنهادی
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.
پیشنهادی
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.
پیشنهادی
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.
پیشنهادی
خلاصه محصولات پیشنهادی
داده‌های مرجع مهندسی برای AD7609BSTZ — مقایسه، راهنمای طراحی و اطلاعات انطباق.
راهنمای انتخاب
مقایسه با جایگزین‌ها
| پارامتر | این محصول | 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 |
تفاوت‌های کلیدی
- 18-bit resolution with 8 simultaneous sampling channels (در مقابلAD7606BSTZ)
- True differential inputs with ±16.5 V clamp protection (در مقابلAD7608BSTZ)
- 200 kSPS throughput on all channels simultaneously (در مقابلAD7606C-16BSTZ-RL)
یادداشت‌های طراحی
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.
اطلاعات انطباق
RoHS compliance confirmed by distributor listings. Other compliance data not explicitly stated in the provided data.
