Overview
The AD7608BSTZ, produced by Analog Devices Inc., is an 18-bit, 8-channel simultaneous sampling analog-to-digital data acquisition system (DAS). This device is designed for high-resolution data acquisition and features a successive approximation analog-to-digital converter (ADC), a flexible digital filter, and a 2.5 V reference and reference buffer. It operates from a single 5 V supply and can accommodate ±10 V and ±5 V true bipolar input signals while sampling at throughput rates up to 200 kSPS for all channels.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Resolution | 18 bits | |||
| Number of Channels | 8 | |||
| Sampling Rate | 200 kSPS | |||
| Analog Input Voltage Range | ±5 V, ±10 V | V | ||
| Analog Input Current | 2.5 µA (5 V), 5.4 µA (10 V) | µA | ||
| Analog Input Impedance | 1 MΩ | Ω | ||
| Reference Input Voltage Range | 2.475 | 2.5 | 2.525 | V |
| Reference Output Voltage | 2.49 | 2.505 | V | |
| Signal-to-Noise Ratio (SNR) | 98 dB | dB | ||
| Total Harmonic Distortion (THD) | −107 dB | dB | ||
| Power Consumption | 100 mW (active), 25 mW (standby) | mW | ||
| Package | 64-lead LQFP (10x10 mm) | |||
Key Features
- Simultaneous sampling of all 8 channels
- Second-order antialiasing analog filter with a 3 dB cutoff frequency of 22 kHz
- Flexible digital filter for improved SNR and reduced bandwidth
- On-chip accurate 2.5 V reference and reference buffer
- Analog input clamp protection up to ±16.5 V
- High input impedance of 1 MΩ regardless of sampling frequency
- Single 5 V supply operation with no need for external driver op amps or bipolar supplies
- Flexible parallel/serial interface compatible with SPI/QSPI™/MICROWIRE™/DSP
- Low power consumption: 100 mW active, 25 mW standby
- 7 kV ESD rating on analog input channels
Applications
- Power line monitoring and protection systems
- Multiphase motor controls
- Instrumentation and control systems
- Multiaxis positioning systems
- Data acquisition systems (DAS)
Q & A
- What is the resolution of the AD7608BSTZ?
The AD7608BSTZ has an 18-bit resolution.
- How many channels does the AD7608BSTZ have?
The AD7608BSTZ has 8 channels.
- What is the sampling rate of the AD7608BSTZ?
The AD7608BSTZ can sample at rates up to 200 kSPS for all channels.
- What are the analog input voltage ranges for the AD7608BSTZ?
The AD7608BSTZ can accommodate ±5 V and ±10 V true bipolar input signals.
- What is the analog input impedance of the AD7608BSTZ?
The analog input impedance is 1 MΩ regardless of the sampling frequency.
- Does the AD7608BSTZ require external driver op amps or bipolar supplies?
No, the AD7608BSTZ does not require external driver op amps or bipolar supplies due to its single supply operation and high input impedance.
- What type of interface does the AD7608BSTZ support?
The AD7608BSTZ supports flexible parallel/serial interfaces compatible with SPI/QSPI™/MICROWIRE™/DSP.
- What is the power consumption of the AD7608BSTZ?
The AD7608BSTZ consumes 100 mW in active mode and 25 mW in standby mode.
- What is the ESD rating of the AD7608BSTZ's analog input channels?
The AD7608BSTZ has a 7 kV ESD rating on its analog input channels.
- What are some common applications of the AD7608BSTZ?
Common applications include power line monitoring and protection systems, multiphase motor controls, instrumentation and control systems, multiaxis positioning systems, and data acquisition systems (DAS).
