AD7609BSTZ - 18-Bit 8-Ch Simultaneous Sampling ADC | Analog Devices
MPN: AD7609BSTZ β Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $52.63 | $52.63 |
| 10 | $48.5 | $485.00 |
| 100 | $44.2 | $4,420.00 |
| 500 | $40.1 | $20,050.00 |
| 1,000 | $36.8 | $36,800.00 |
Drop-in alternatives for AD7609BSTZ β same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Quick Comparison Tool β Select alternative parts for side-by-side comparison:
AD7609BSTZ-RL
β Drop-Inπ Reference alternative (not in catalog)
AD7606BSTZ
β Drop-Inβ In Stock
$16.9 / Unit
View Datasheet βAD7607BSTZ
β Drop-Inπ Reference alternative (not in catalog)
AD7608BSTZ
β Drop-Inβ In Stock
$20.95 / Unit
View Datasheet βAD7606BSTZ-6
β Drop-Inπ Reference alternative (not in catalog)
AD7606BSTZ-4
β Drop-Inβ In Stock
$11.6 / Unit
View Datasheet βAD7609BSTZ Maximum Ratings & Electrical Characteristics
| Resolution | 18 bit |
| Number of Channels | 8 |
| Input Type | True Differential |
| Sampling Rate | 200 kSPS |
| Input Voltage Range | Β±5 V or Β±10 V |
| Interface | SPI, DSP, Parallel |
| Supply Voltage | 5 V |
| Internal Reference | 2.5 V |
| Input Clamp Protection | Β±16.5 V |
| Antialiasing Filter | Second-order |
| Operating Temperature Range | -40Β°C to +85Β°C |
| Package | 64-LQFP (10x10 mm) |
| Mounting Type | Surface Mount |
| RoHS Status | Compliant |
| Architecture | Charge Redistribution SAR |
AD7609BSTZ Pin Configuration
| Pin 1 | AVCC β Analog supply voltage (5 V) |
| Pin 2 | AVCC β Analog supply voltage (5 V) |
| Pin 3 | V1+ β Positive analog input channel 1 |
| Pin 4 | V1- β Negative analog input channel 1 |
| Pin 5 | V2+ β Positive analog input channel 2 |
| Pin 6 | V2- β Negative analog input channel 2 |
| Pin 7 | V3+ β Positive analog input channel 3 |
| Pin 8 | V3- β Negative analog input channel 3 |
| Pin 9 | V4+ β Positive analog input channel 4 |
| Pin 10 | V4- β Negative analog input channel 4 |
| Pin 11 | V5+ β Positive analog input channel 5 |
| Pin 12 | V5- β Negative analog input channel 5 |
| Pin 13 | V6+ β Positive analog input channel 6 |
| Pin 14 | V6- β Negative analog input channel 6 |
| Pin 15 | V7+ β Positive analog input channel 7 |
| Pin 16 | V7- β Negative analog input channel 7 |
| Pin 17 | V8+ β Positive analog input channel 8 |
| Pin 18 | V8- β Negative analog input channel 8 |
| Pin 19 | AGND β Analog ground |
| Pin 20 | AGND β Analog ground |
| Pin 21 | REFIN/REFOUT β Reference input/output |
| Pin 22 | REFCAP β Reference buffer output |
| Pin 23 | RANGE β Input range select (Β±5 V or Β±10 V) |
| Pin 24 | OS0 β Oversampling ratio bit 0 |
| Pin 25 | OS1 β Oversampling ratio bit 1 |
| Pin 26 | OS2 β Oversampling ratio bit 2 |
| Pin 27 | PAR/SER/BYTE β Parallel/serial/byte select |
| Pin 28 | STBY β Standby mode input |
| Pin 29 | CONVST A β Conversion start for channels 1-4 |
| Pin 30 | CONVST B β Conversion start for channels 5-8 |
| Pin 31 | BUSY β Busy output indicating conversion in progress |
| Pin 32 | FRSTDATA β First data output indicator |
| Pin 33 | RD/SCLK β Read/Serial clock input |
| Pin 34 | CS β Chip select input |
| Pin 35 | RESET β Reset input |
| Pin 36 | VDRIVE β Digital interface supply voltage |
| Pin 37 | DVCC β Digital supply voltage (5 V) |
| Pin 38 | DGND β Digital ground |
| Pin 39 | DB0 β Parallel data bit 0 |
| Pin 40 | DB1 β Parallel data bit 1 |
| Pin 41 | DB2 β Parallel data bit 2 |
| Pin 42 | DB3 β Parallel data bit 3 |
| Pin 43 | DB4 β Parallel data bit 4 |
| Pin 44 | DB5 β Parallel data bit 5 |
| Pin 45 | DB6 β Parallel data bit 6 |
| Pin 46 | DB7 β Parallel data bit 7 |
| Pin 47 | DB8 β Parallel data bit 8 |
| Pin 48 | DB9 β Parallel data bit 9 |
| Pin 49 | DB10 β Parallel data bit 10 |
| Pin 50 | DB11 β Parallel data bit 11 |
| Pin 51 | DB12 β Parallel data bit 12 |
| Pin 52 | DB13 β Parallel data bit 13 |
| Pin 53 | DB14 β Parallel data bit 14 |
| Pin 54 | DB15 β Parallel data bit 15 |
| Pin 55 | DB16 β Parallel data bit 16 |
| Pin 56 | DB17 β Parallel data bit 17 |
| Pin 57 | DGND β Digital ground |
| Pin 58 | DVCC β Digital supply voltage (5 V) |
| Pin 59 | VDRIVE β Digital interface supply voltage |
| Pin 60 | DOUTA β Serial data output A |
| Pin 61 | DOUTB β Serial data output B |
| Pin 62 | DIN β Serial data input |
| Pin 63 | AGND β Analog ground |
| Pin 64 | AVCC β Analog supply voltage (5 V) |
Safe Operating Area (SOA) & Thermal Characteristics
No official SOA curve available for this component. Always operate within absolute maximum ratings specified in the datasheet. Ensure adequate cooling and derate as needed.
Typical Applications
AD7609BSTZ is suitable for 6 applications: Power Line Monitoring, Motor Control, Industrial Data Acquisition, Protective Relays, Test and Measurement, Medical Monitoring.
Power Line Monitoring
The AD7609BSTZ is ideal for power line monitoring due to its 8 simultaneous sampling channels and true differential inputs. It can measure three-phase voltages and currents with accurate phase alignment, which is essential for power quality analysis and protective relays. The 18-bit resolution and 200 kSPS sampling rate enable precise measurement of harmonics and transients. The integrated antialiasing filter simplifies external filtering, and the input clamp protection up to Β±16.5 V ensures robustness in substation environments. The device operates from a single 5 V supply, simplifying power design in remote monitoring units.
Recommended
Motor Control
In motor control applications, the AD7609BSTZ provides simultaneous sampling of phase currents and voltages, which is critical for accurate field-oriented control (FOC). The 8 channels allow monitoring of all three phases plus DC bus voltage and current. The 18-bit resolution ensures precise current sensing, reducing torque ripple and improving efficiency. The 200 kSPS sampling rate is sufficient for high-speed motor drives. The device's true differential inputs reject common-mode noise from motor cables, and the wide input range accommodates various current sensor outputs. The parallel interface enables fast data transfer to the motor controller.
Recommended
Industrial Data Acquisition
The AD7609BSTZ is well-suited for general industrial data acquisition systems that require high precision and multiple channels. Its 8 true differential inputs can be configured for Β±5 V or Β±10 V ranges, making it compatible with a variety of sensors and transducers. The integrated antialiasing filter and track-and-hold amplifiers ensure accurate sampling of fast transients. The device's serial interface simplifies connection to microcontrollers and FPGAs, while the parallel interface offers high-speed data transfer. The industrial temperature range and robust input protection make it reliable in factory automation and process control environments.
Recommended
Protective Relays
Protective relays require simultaneous sampling of voltage and current waveforms to detect faults quickly and accurately. The AD7609BSTZ's 8 channels and 200 kSPS sampling rate enable comprehensive monitoring of three-phase systems. The 18-bit resolution provides high dynamic range to distinguish between normal operation and fault conditions. The input clamp protection up to Β±16.5 V ensures the ADC survives transient overvoltages common in power systems. The device's fast conversion time and parallel interface allow rapid data acquisition for relay algorithms. The integrated reference and buffer reduce external component count, improving reliability in critical protection equipment.
Recommended
Test and Measurement
In test and measurement equipment, the AD7609BSTZ provides high-resolution, simultaneous sampling for multi-channel data acquisition. Its 18-bit resolution and 200 kSPS sampling rate are suitable for capturing detailed waveforms in oscilloscopes, data loggers, and spectrum analyzers. The true differential inputs allow accurate measurement of floating signals, and the wide input range accommodates various signal levels. The device's low power consumption is beneficial for portable instruments. The serial interface simplifies integration with embedded processors, while the parallel interface offers high-speed data transfer for real-time analysis.
Recommended
Medical Monitoring
The AD7609BSTZ can be used in medical monitoring equipment that requires simultaneous sampling of multiple physiological signals, such as ECG, EEG, and blood pressure. The 8 channels allow monitoring of multiple leads or sensors simultaneously. The 18-bit resolution ensures accurate detection of small signal variations, and the true differential inputs reject common-mode interference from the body. The device's low power consumption is suitable for battery-powered portable monitors. The industrial temperature range and robust design ensure reliable operation in clinical environments. The serial interface simplifies connection to medical-grade microcontrollers.
Recommended
Recommended Products Summary
Engineering reference data for AD7609BSTZ β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | AD7609BSTZ-RL | AD7606BSTZ | AD7607BSTZ | AD7608BSTZ | AD7606BSTZ-6 | AD7606BSTZ-4 |
|---|---|---|---|---|---|---|---|
| Package | 64-LQFP (10x10 mm) | 64-LQFP (10x10 mm) - same | 64-LQFP (10x10 mm) - same | 64-LQFP (10x10 mm) - same | 64-LQFP (10x10 mm) - same | 64-LQFP (10x10 mm) - same | 64-LQFP (10x10 mm) - same |
| Brand | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Analog Devices |
| Resolution | 18 bit | 18 bit | 16 bit | 14 bit | 14 bit | 16 bit | 16 bit |
| Number of Channels | 8 | 8 | 8 | 8 | 8 | 6 | 4 |
| Sampling Rate | 200 kSPS | 200 kSPS | 200 kSPS | 200 kSPS | 200 kSPS | 200 kSPS | 200 kSPS |
| Input Type | True Differential | True Differential | True Differential | True Differential | True Differential | True Differential | True Differential |
| Input Voltage Range | Β±5 V or Β±10 V | Β±5 V or Β±10 V | Β±5 V or Β±10 V | Β±5 V or Β±10 V | Β±5 V or Β±10 V | Β±5 V or Β±10 V | Β±5 V or Β±10 V |
| Interface | SPI, DSP, Parallel | SPI, DSP, Parallel | SPI, DSP, Parallel | SPI, DSP, Parallel | SPI, DSP, Parallel | SPI, DSP, Parallel | SPI, DSP, Parallel |
Key Differentiators
- Higher resolution than AD7606BSTZ (vs AD7606BSTZ)
- More channels than AD7606BSTZ-6 (vs AD7606BSTZ-6)
- Higher resolution than AD7607BSTZ (vs AD7607BSTZ)
Design Notes
Decouple AVCC and DVCC with 10 Β΅F and 0.1 Β΅F capacitors placed close to the pins. Use separate analog and digital ground planes to minimize noise coupling. The VDRIVE pin should be decoupled with a 0.1 Β΅F capacitor to the digital ground.
Place the REFIN/REFOUT decoupling capacitor (10 Β΅F) close to the pin. For optimal performance, use a low-jitter conversion clock and keep digital traces away from analog inputs. The LQFP package has an exposed pad that should be soldered to the ground plane for thermal and electrical performance.
Ensure the input voltage does not exceed the absolute maximum ratings. The RANGE pin must be set correctly for the desired input range. When using the parallel interface, ensure the timing requirements are met. Avoid floating unused digital inputs by tying them to appropriate logic levels.
Compliance Information
RoHS compliant per Analog Devices product page. Not AEC-Q100 qualified; intended for industrial applications.