The ADS1625 and ADS1626 are high-speed, high-precision, delta-sigma analog-to-digital converters (ADCs) with 18-bit resolution. The data rate is 1.25 mega samples per second (MSPS), the bandwidth (-3dB) is 615kHz, and passband ripple is less than ±0.0025dB (to 550kHz). Both devices offer the same outstanding performance at these speeds with a signal-to-noise ratio up to 93dB, total harmonic distortion down to -101dB, and a spurious-free dynamic range up to 103dB. The ADS1626 includes an adjustable first-in, first-out buffer (FIFO) for the output data.

The input signal is measured against a voltage reference that can be generated on-chip or supplied externally. The digital output data is provided over a simple parallel interface that easily connects to digital signal processors (DSPs). An out-of-range monitor reports when the input range has been exceeded. The ADS1625/6 operate from a +5V analog supply (AVDD) and +3V digital supply (DVDD). The digital I/O supply (IOVDD) operates from +2.7 to +5.25V, enabling the digital interface to support a range of logic families. The analog power dissipation is set by an external resistor and can be reduced when operating at slower speeds. A power-down mode, activated by a digital I/O pin, shuts down all circuitry. The ADS1625/6 are offered in a TQFP-64 package using TI PowerPAD™ technology.

The ADS1625 and ADS1626, along with their 16-bit, 5MSPS counterparts, the ADS1605 and ADS1606, are well-suited for the demanding measurement requirements of scientific instrumentation, automated test equipment, data acquisition, and medical imaging.

• Data Rate: 1.25MSPS
• Signal-to-Noise Ratio: 93dB
• Total Harmonic Distortion: –101dB
• Spurious-Free Dynamic Range: 103dB
• Linear Phase with 615kHz Bandwidth
• Passband Ripple: ±0.0025dB
• Adjustable FIFO Output Buffer (ADS1626 only)
• Selectable On-Chip Reference
• Directly Connects to TMS320C6000 DSPs
• Adjustable Power Dissipation: 150 to 515mW
• Power Down Mode
• Supplies: Analog+5V Digital +3V Digital I/O +2.7 to +5.25V
• APPLICATIONS
  • Scientific Instruments
  • Automated Test Equipment
  • Data Acquisition
  • Medical Imaging
  • Vibration Analysis

PowerPAD is a trademark of Texas Instruments. All other trademarks are the property of their respective owners.

• Resolution (Bits)
• 18
• Number of input channels
• 1
• Sample rate (Max) (kSPS)
• 1250
• Interface type
• Parallel
• Architecture
• Delta-Sigma
• Input type
• Differential
• Multi-channel configuration
• —
• Rating
• Catalog
• Reference mode
• Ext, Int
• Input range (Max) (V)
• 4.8
• Input range (Min) (V)
• 0
• Features
• —
• Operating temperature range (C)
• -40 to 85
• Power consumption (Typ) (mW)
• 520
• Analog voltage AVDD (Min) (V)
• 4.75
• SNR (dB)
• 93
• Analog voltage AVDD (Max) (V)
• 5.25
• INL (Max) (+/-LSB)
• 3.5
• Digital supply (Min) (V)
• 2.7
• Digital supply (Max) (V)
• 5.25

ADS1625的完整型号有：ADS1625IPAPT，以下是这些产品的关键参数及官网采购报价：

ADS1625IPAPT，工作温度：-40 to 85，封装：HTQFP (PAP)-64，包装数量MPQ：250个，MSL 等级/回流焊峰值温度：Level-3-260C-168 HR，引脚镀层/焊球材料：NIPDAU，TI官网ADS1625IPAPT的批量USD价格：18.407（1000+）

ADS1625 IBIS Model

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