Pinout
Specifications| Pin and Function Compatible Family | 1 ch, MSOP-8 |
| Resolution | 12 bits |
| Input Channels | 1 |
| Sample Rate Range (sps) | 200k to 500k |
| Interface Type | SPI/QSPI/Microwire |
| Differential Input | Yes |
| Power Down, typ. at 3.6V | 1.5 uW |
| Operating Power, typ at 3.6V, max ksps | 0.019 mW |
| Operating Power, 3.6V, 1ksps, max. PwrDn | 9.0 mW |
| PowerWise Rating 1 | 7.14 pJ/conv |
| INL (LSB) | ±, 0.95 |
| DNL (LSB) | ±0.85 |
| ENOB | 11.3 bits |
| SINAD | 70 dB |
| SNR | 71 dB |
| Max KSample Rate | 500 ksps |
| Min Supply Voltage | 4.5 Volt |
| Max Supply Voltage | 5.5 Volt |
| Reference Source | External |
| Temperature Min | -40 deg C |
| Temperature Max | 105 deg C |
| Power Down | Yes |
| Input Sample/Hold | Yes |
| Special Features | External Reference, Differential input |
| Data Converter Type | ADC |
| Max Sample Rate | 0.5 MSPS |
| Automotive Selection Guide | Yes |
| View Using Catalog |
DescriptionThe ADC121S655 is a 12-bit, 200 kSPS to 500 kSPS sampling Analog-to-Digital (A/D) converter that features a fully differential, high impedance analog input and an external reference. The reference voltage can be varied from 1.0V to VA, with a corresponding resolution between 244µV and VA divided by 4096.
The output serial data is binary 2's complement and is compatible with several standards, such as SPI™, QSPI™, MICROWIRE™, and many common DSP serial interfaces. The differential input, low power consumption, and small size make the ADC121S655 ideal for direct connection to transducers in battery operated systems or remote data acquisition applications.
Operating from a single 5V supply, the supply current when operating at 500 kSPS is typically 1.8 mA. The supply current drops down to 0.3 µA typically when the ADC121S655 enters power-down mode. The ADC121S655 is available in the MSOP-8 package. Operation is guaranteed over the industrial temperature range of −40°C to +105°C and clock rates of 3.2 MHz to 8 MHz.
Reliability Metrics
| Part Number |
Process |
EFR Reject |
EFR Sample Size |
PPM |
LTA Rejects |
LTA Device Hours |
FITS |
MTTF (Hours) |
| ADC121S655CIMM |
CMOS7 |
0 |
16561 |
0 |
0 |
954000 |
4 |
270700104 |
| ADC121S655CIMMX |
CMOS7 |
0 |
16561 |
0 |
0 |
954000 |
4 |
270700104 |
Note: The Early Failure Rates (EFR) were calculated as point estimate PPM based on rejects and sample size for EFR. The Long Term Failure Rates were calculated at 60% confidence using the Arrhenius equation at 0.7eV activation energy and derating the assumed stress temperature of 150°C to an application temperature of 55°C.For more information on Reliability Metrics, please click here.
ADC121S655 Data Sheet
