AD7609BSTZ - 18-Bit 8-Ch Simultaneous Sampling ADC | Analog Devices
MPN: AD7609BSTZ ✓ نشطAD7609BSTZ نظرة عامة
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.
بدائل مباشرة لـ AD7609BSTZ — نفس الحزمة، متوافق دبوس بدبوس. تُستثنى القطع ذات الحزم المختلفة التي تتطلب تعديل PCB.
الطرازات في هذه السلسلة
طرازات من نفس السلسلة متوافقة تمامًا مع AD7609BSTZ (نفس عامل الشكل والبصمة) — يختلف في Resolution, Input Type, Interface, Internal Reference, Antialiasing Filter.
AD7606BSTZ
✅ بديل مباشر✗ غير متوفر
$16.9 / وحدة
عرض ورقة البيانات ←AD7606BSTZ-RL
✅ بديل مباشرتواصل لمعرفة السعر
عرض ورقة البيانات ←AD7609BSTZ-RL
✅ بديل مباشر📋 بديل مرجعي (غير موجود في الكتالوج)
AD7606C-16BSTZ-RL
✅ بديل مباشر📋 بديل مرجعي (غير موجود في الكتالوج)
AD7608BSTZ
✅ بديل مباشر ⚠️ مواصفات غير مُتحقق منها✗ غير متوفر
$38.1818 / وحدة
عرض ورقة البيانات ←AD7609BSTZ الحدود القصوى والخصائص الكهربائية
| الدقة | 18 bits |
| Number of Channels | 8 |
| Input Type | True differential |
| نطاق جهد الدخل | ±5 V or ±10 V |
| Throughput Rate | 200 kSPS |
| جهد التغذية | 5 V (single) |
| Internal Reference | 2.5 V |
| Input Clamp Protection | ±16.5 V |
| Analog Input Impedance | 1 MΩ |
| الواجهة | SPI, DSP, parallel |
| العلبة | 64-LQFP (10x10 mm) |
| نطاق درجة حرارة التشغيل | -40°C to +85°C |
| Antialiasing Filter | Second-order |
| Architecture | Charge redistribution SAR |
| RoHS | Compliant |
تكوين أطراف AD7609BSTZ
| دبوس 1 | AVCC — Analog supply voltage (5 V) |
| دبوس 2 | V1+ — Positive analog input channel 1 |
| دبوس 3 | V1- — Negative analog input channel 1 |
| دبوس 4 | V2+ — Positive analog input channel 2 |
| دبوس 5 | V2- — Negative analog input channel 2 |
| دبوس 6 | V3+ — Positive analog input channel 3 |
| دبوس 7 | V3- — Negative analog input channel 3 |
| دبوس 8 | V4+ — Positive analog input channel 4 |
| دبوس 9 | V4- — Negative analog input channel 4 |
| دبوس 10 | V5+ — Positive analog input channel 5 |
| دبوس 11 | V5- — Negative analog input channel 5 |
| دبوس 12 | V6+ — Positive analog input channel 6 |
| دبوس 13 | V6- — Negative analog input channel 6 |
| دبوس 14 | V7+ — Positive analog input channel 7 |
| دبوس 15 | V7- — Negative analog input channel 7 |
| دبوس 16 | V8+ — Positive analog input channel 8 |
| دبوس 17 | V8- — Negative analog input channel 8 |
| دبوس 18 | AGND — Analog ground |
| دبوس 19 | REFIN/REFOUT — Reference input/output |
| دبوس 20 | REFCAP — Reference buffer output |
| دبوس 21 | REFSELECT — Reference select (high = internal, low = external) |
| دبوس 22 | RANGE — Input range select (±5 V or ±10 V) |
| دبوس 23 | CONVST A — Conversion start for channels 1-4 |
| دبوس 24 | CONVST B — Conversion start for channels 5-8 |
| دبوس 25 | BUSY — Busy output (high during conversion) |
| دبوس 26 | FRSTDATA — First data output |
| دبوس 27 | OS0 — Oversampling ratio bit 0 |
| دبوس 28 | OS1 — Oversampling ratio bit 1 |
| دبوس 29 | OS2 — Oversampling ratio bit 2 |
| دبوس 30 | PAR/SER/BYTE — Parallel/serial/byte select |
| دبوس 31 | STBY — Standby mode input |
| دبوس 32 | CS — Chip select |
| دبوس 33 | RD/SCLK — Read/Serial clock |
| دبوس 34 | WR/DIN — Write/Serial data input |
| دبوس 35 | DB0 — Parallel data bit 0 |
| دبوس 36 | DB1 — Parallel data bit 1 |
| دبوس 37 | DB2 — Parallel data bit 2 |
| دبوس 38 | DB3 — Parallel data bit 3 |
| دبوس 39 | DB4 — Parallel data bit 4 |
| دبوس 40 | DB5 — Parallel data bit 5 |
| دبوس 41 | DB6 — Parallel data bit 6 |
| دبوس 42 | DB7 — Parallel data bit 7 |
| دبوس 43 | DB8 — Parallel data bit 8 |
| دبوس 44 | DB9 — Parallel data bit 9 |
| دبوس 45 | DB10 — Parallel data bit 10 |
| دبوس 46 | DB11 — Parallel data bit 11 |
| دبوس 47 | DB12 — Parallel data bit 12 |
| دبوس 48 | DB13 — Parallel data bit 13 |
| دبوس 49 | DB14 — Parallel data bit 14 |
| دبوس 50 | DB15 — Parallel data bit 15 |
| دبوس 51 | DVCC — Digital supply voltage (5 V) |
| دبوس 52 | DGND — Digital ground |
| دبوس 53 | VDRIVE — Logic supply voltage |
| دبوس 54 | RESET — Reset input |
| دبوس 55 | DOUTA — Serial data output A |
| دبوس 56 | DOUTB — Serial data output B |
| دبوس 57 | DB16 — Parallel data bit 16 |
| دبوس 58 | DB17 — Parallel data bit 17 |
| دبوس 59 | DB18 — Parallel data bit 18 |
| دبوس 60 | DB19 — Parallel data bit 19 |
| دبوس 61 | DB20 — Parallel data bit 20 |
| دبوس 62 | DB21 — Parallel data bit 21 |
| دبوس 63 | DB22 — Parallel data bit 22 |
| دبوس 64 | DB23 — Parallel data bit 23 |
التطبيقات النموذجية
AD7609BSTZ مناسب لـ 6 التطبيقs: 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.
موصى به
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.
موصى به
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.
موصى به
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.
موصى به
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.
موصى به
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.
موصى به
ملخص المنتجات الموصى بها
بيانات مرجعية هندسية لـ AD7609BSTZ — المقارنة وإرشادات التصميم ومعلومات الامتثال.
دليل الاختيار
المقارنة مع البدائل
| المعامل | هذا المنتج | 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 |
أبرز الفروقات
- 18-bit resolution with 8 simultaneous sampling channels (مقابلAD7606BSTZ)
- True differential inputs with ±16.5 V clamp protection (مقابلAD7608BSTZ)
- 200 kSPS throughput on all channels simultaneously (مقابلAD7606C-16BSTZ-RL)
ملاحظات التصميم
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.
معلومات الامتثال
RoHS compliance confirmed by distributor listings. Other compliance data not explicitly stated in the provided data.
