ADC121S051CISDX vs ADC121S021CISDX Comparison
Detailed side-by-side comparison of ADC121S051CISDX by Texas Instruments and ADC121S021CISDX by Texas Instruments. Compare key specifications, electrical parameters, packaging, lifecycle status, pricing, and availability to determine the best component for your design requirements.
Texas Instruments
ADC121S051CISDX - 12-Bit 200-500ksps Differential Input ADC | Texas Instruments
ADC121S051CISDX ✓ ActiveTexas Instruments
ADC121S021CISDX - 12-Bit 50-200ksps SAR ADC | Texas Instruments
ADC121S021CISDX ObsoleteSpecification Comparison
| Parameter | ADC121S051CISDX | ADC121S021CISDX |
|---|---|---|
| Brand | Texas Instruments | Texas Instruments |
| Category | ADC/DAC | ADC/DAC |
| Lifecycle Status | Active | Obsolete |
| Stock Status | In Stock | In Stock |
| Unit Price (USD) | $1.55 | $1.85 |
| Manufacturer | Texas Instruments | — |
| Part Family | ADC121S051 (pin-compatible ADC121Sxx1 series) | — |
| Resolution | 12 bits | 12 bit |
| Number of Channels | 1 (single-ended or differential input) | 1 |
| Sample Rate Range | 200 ksps to 500 ksps | 50 ksps to 200 ksps |
| Architecture | SAR (Successive Approximation Register) | — |
| Input Type | Differential (pseudo-differential capable) | — |
| Supply Voltage (VA) | +2.7 V to +5.25 V (single supply) | — |
| Power Consumption at 3.6 V | 1.7 mW (typical) | — |
| Power Consumption at 5.25 V | 8.7 mW (typical) | — |
| Digital Interface | SPI, QSPI, MICROWIRE, DSP-compatible serial | — |
| Output Format | Straight binary (MSB-first) | — |
| Operating Temperature Range | -40 C to +85 C (industrial) | — |
| Package | 6-pin LLP/WSON (2.2 x 2.5 mm) with exposed pad | 6-pin WSON (2.2 x 2.5 mm) with exposed thermal pad |
| Mounting Type | Surface Mount | — |
| MSL Level | 1 (per data) | — |
| RoHS Status | Compliant (lead-free) | Compliant (/NOPB variant) |
| Input Voltage Range | 0 V to VA (full-scale) | 0 V to V_REF |
| Linearity Error (INL) | [DATA_NEEDED: INL LSB value] | — |
| Screening Level | Industrial | — |
| Converter Type | — | SAR (Successive Approximation Register) |
| Supply Voltage (V_A) | — | 2.7 V to 5.25 V |
| Supply Current (200 ksps, 3 V) | — | 1.4 mW typical |
| Analog Input Type | — | Single-ended (pseudo-differential) |
| Reference Voltage | — | V_REF (external) or V_A |
| INL (max) | — | ±1 LSB |
| DNL (max) | — | +1.5 / -1 LSB |
| SINAD | — | 72 dB typical at 200 ksps |
| Serial Interface | — | SPI / QSPI / MICROWIRE-compatible (3-wire: CS, SCLK, DOUT) |
| SCLK Frequency (max) | — | 20 MHz |
| Operating Temperature | — | -40C to +85C (industrial) |
| Power-Down Current | — | Microampere-level (see datasheet) |