ADS1218Y/250
Active24-BIT, 780SPS ADC W/ FLASH MEMORY, 8 CH, VREF, BUFFER, 2 IDACS, SERIAL OUT, DIGITAL I/O, LOW POWER
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ADS1218Y/250
Active24-BIT, 780SPS ADC W/ FLASH MEMORY, 8 CH, VREF, BUFFER, 2 IDACS, SERIAL OUT, DIGITAL I/O, LOW POWER
Technical Specifications
Parameters and characteristics for this part
| Specification | ADS1218Y/250 |
|---|---|
| Architecture | Sigma-Delta |
| Configuration | MUX-PGA-ADC |
| Data Interface | SPI |
| Features | PGA |
| Input Type | Differential |
| Mounting Type | Surface Mount |
| Number of A/D Converters | 1 |
| Number of Bits | 24 |
| Number of Inputs | 8 |
| Operating Temperature [Max] | 85 °C |
| Operating Temperature [Min] | -40 °C |
| Package / Case | 48-TQFP |
| Reference Type | External, Internal |
| Sampling Rate (Per Second) | 780 Per Second |
| Supplier Device Package | 48-TQFP (7x7) |
| Voltage - Supply, Analog | 5 V |
| Voltage - Supply, Analog [Max] | 3.3 V |
| Voltage - Supply, Analog [Min] | 2.7 V |
| Voltage - Supply, Digital [Max] | 5.25 V |
| Voltage - Supply, Digital [Min] | 2.7 V |
Pricing
Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly
| Distributor | Package | Quantity | $ | |
|---|---|---|---|---|
| Digikey | Cut Tape (CT) | 1 | $ 22.28 | |
| 10 | $ 16.31 | |||
| 25 | $ 14.78 | |||
| 100 | $ 13.07 | |||
| Digi-Reel® | 1 | $ 22.28 | ||
| 10 | $ 16.31 | |||
| 25 | $ 14.78 | |||
| 100 | $ 13.07 | |||
| Tape & Reel (TR) | 250 | $ 12.24 | ||
| 500 | $ 11.99 | |||
| Newark | Each (Supplied on Cut Tape) | 1 | $ 25.81 | |
| 10 | $ 24.69 | |||
| 25 | $ 23.46 | |||
| 50 | $ 22.43 | |||
| 100 | $ 21.47 | |||
| 250 | $ 20.79 | |||
| 500 | $ 20.29 | |||
| 1000 | $ 19.96 | |||
| Texas Instruments | SMALL T&R | 1 | $ 15.92 | |
| 100 | $ 13.91 | |||
| 250 | $ 10.72 | |||
| 1000 | $ 9.59 | |||
Description
General part information
ADS1218 Series
The ADS1218 is a precision, wide dynamic range, delta-sigma, Analog-to-Digital (A/D) converter with 24-bit resolution and Flash memory operating from 2.7V to 5.25V supplies. The delta-sigma, A/D converter provides up to 24 bits of no missing code performance and effective resolution of 22 bits.
The eight input channels are multiplexed. Internal buffering can be selected to provide a very high input impedance for direct connection to transducers or low-level voltage signals. Burnout current sources are provided that allow for the detection of an open or shorted sensor. An 8-bit Digital-to-Analog (D/A) converter provides an offset correction with a range of 50% of the FSR (Full-Scale Range).
The PGA (Programmable Gain Amplifier) provides selectable gains of 1 to 128 with an effective resolution of 19 bits at a gain of 128. The A/D conversion is accomplished with a second-order delta-sigma modulator and programmable sinc filter. The reference input is differential and can be used for ratiometric conversion. The on-board current DACs (Digital-to-Analog Converters) operate independently with the maximum current set by an external resistor.
Documents
Technical documentation and resources