Product Descriptions
The AD7766/AD7766-1/AD7766-2 are high performance, 24-bit, oversampled SAR analog-to-digital converters (ADCs).
The AD7766/AD7766-1/AD7766-2 combine the benefits of a large dynamic range and input bandwidth, consuming 15 mW, 10.5 mW, and 8.5 mW power, respectively, and are contained in a 16-lead TSSOP package.
Ideal for ultralow power data acquisition (such as PCI- and USB based systems), the AD7766/AD7766-1/AD7766-2 provide 24-bit resolution. The combination of exceptional SNR, wide dynamic range, and outstanding dc accuracy make the AD7766/AD7766-1/ AD7766-2 ideally suited for measuring small signal changes over a wide dynamic range. This is particularly suitable for applications where small changes on the input are measured on larger ac or dc signals. In such an application, the AD7766/AD7766-1/ AD7766-2 accurately gather both ac and dc information.
The AD7766/AD7766-1/AD7766-2 include an on-board digital filter (complete with linear phase response) that acts to eliminate out-of-band noise by filtering the oversampled input voltage.
The oversampled architecture also reduces front-end antialias requirements. Other features of the AD7766/AD7766-1/AD7766-2 include a SYNC/PD (synchronization/power-down) pin, allowing the synchronization of multiple AD7766/AD7766-1/AD7766-2 devices. The addition of an SDI pin provides the option of daisy chaining multiple AD7766/AD7766-1/AD7766-2 devices.
The AD7766/AD7766-1/AD7766-2 operate from a 2.5 V supply using a 5 V reference. The devices operate from ?40°C to +105°C.
Product Features
? Oversampled successive approximation (SAR) architecture
? High performance ac and dc accuracy, low power
- 115.5 dB dynamic range, 32 kSPS (AD7766-2)
- 112.5 dB dynamic range, 64 kSPS (AD7766-1)
- 109.5 dB dynamic range, 128 kSPS (AD7766)
?112 dB THD
? Exceptionally low power
- 8.5 mW, 32 kSPS (AD7766-2)
- 10.5 mW, 64 kSPS (AD7766-1)
- 15 mW, 128 kSPS (AD7766)
? High dc accuracy
- 24 bits, no missing codes (NMC)
- INL: ±6 ppm (typical), ±15 ppm (maximum)
? Low temperature drift
- Zero error drift: 15 nV/°C
- Gain error drift: 0.4 ppm/°C
? On-chip low-pass FIR filter
- Linear phase response
- Pass-band ripple: ±0.005 dB
- Stop-band attenuation: 100 dB
? 2.5 V supply with 1.8 V/2.5 V/3 V/3.6 V logic interface options
? Flexible interfacing options
- Synchronization of multiple devices
- Daisy-chain capability
- Power-down function
? Temperature range: ?40°C to +105°C
Product Applications
? Low power PCI/USB data acquisition systems
? Low power wireless acquisition systems
? Vibration analysis
? Instrumentation
? High precision medical acquisition
Specifications
| Attribute | Attribute value |
| ANSM-Part# | ANSM-AD7766BRUZ-1 |
| Category | Integrated Circuits (ICs) |
| Data Acquisition | |
| Analog to Digital Converters (ADC) | |
| Mfr | Original |
| Series | - |
| Package | Tube |
| Product Status | Active |
| Number of Bits | 24 |
| Sampling Rate (Per Second) | 64k |
| Number of Inputs | 1 |
| Input Type | Differential |
| Data Interface | SPI |
| Configuration | ADC |
| Ratio - S/H:ADC | - |
| Number of A/D Converters | 1 |
| Architecture | SAR |
| Reference Type | External |
| Voltage - Supply, Analog | 2.5V |
| Voltage - Supply, Digital | 2.5V |
| Features | - |
| Operating Temperature | -40°C ~ 105°C |
| Package / Case | 16-TSSOP (0.173", 4.40mm Width) |
| Supplier Device Package | 16-TSSOP |
| Mounting Type | Surface Mount |
| Base Product Number | AD7766 |
Actual product photos

Product Data Book:



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