LHA6960
The LHA6960 is an 18-bit, 5 MSPS, charge redistribution successive approximation (SAR), analog-to-digital converter (ADC). The SAR architecture allows unmatched performance both in noise and in linearity. The LHA6960 contains a low power, high speed, 18-bit sampling ADC, an internal conversion clock, and an internal reference buffer. On the CNV± edge, the LHA6960 samples the voltage difference between the IN+ and IN− pins. The voltages on these pins swing in opposite phase between 0 V and 4.096 V and between 0 V and 5 V. The reference voltage is applied to the part externally. All conversion results are available on a single LVDS self clocked or echoed clock serial interface. The LHA6960 is available in a 32-lead QFN with operation specified from −40°C to +125°C.
Product Features
- Throughput: 5 MSPS
- 18-bit resolution with no missing codes
- Excellent ac and dc performance
- Dynamic range: 98 dB
- SNR: 95.5 dB
- THD: −109 dB
- INL: ±3 LSB (typical), ±0.9 LSB (maximum)
- DNL: ±0.6 LSB (typical), ±0.9 LSB (maximum)
- True differential analog input voltage range: ±4.096 V or ±5 V
- Low power dissipation
- 34.4 mW at 5 MSPS with external reference buffer (echoed clock mode)
- 54.9 mW at 5 MSPS with internal reference buffer (echoed clock mode)
- 27.4 mW at 5 MSPS with external reference buffer (self clocked mode, CNV± in CMOS mode)
- SAR architecture
- No latency/pipeline delay
- External reference options: 2.048 V buffered to 4.096 V (internal reference buffer), 4.096 V, and 5 V
- Serial LVDS interface
- Self clocked mode
- Echoed clock mode
- LVDS or CMOS option for conversion control (CNV± signal)
- Operating temperature range of −40°C to +125°C
- 32-lead, 5 mm × 5 mm LFCSP (QFN)
Application Scenario
- Digital imaging systems
- Digital X-rays
- Computed tomography
- IR cameras
- MRI gradient control
- High speed data acquisition
- Spectroscopy
- Test equipment
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