My Inquiry
My Account
Texas Instruments ADC122S051QIMMX/NOPB
- Part No.:
- ADC122S051QIMMX/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
ADC122S051QIMMX/NOPB.pdf
- Description:
- IC ADC 12BIT SAR 8VSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,725
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
ADC122S051QIMMX/NOPB from Texas Instruments is a dual-channel, 12-bit successive-approximation ADC with SPI-compatible serial interface, 200–500 ksps sample rate, ±0.5 LSB typical INL, and automotive-qualified AEC-Q100 operation. It performs simultaneous track-and-hold on two analog inputs (IN1/IN2), supports single 2.7–5.25 V supply, and delivers 72.5 dB typical SNR for precision data acquisition in space-constrained systems.
For engineers reviewing the ADC122S051QIMMX/NOPB datasheet, ADC122S051QIMMX/NOPB pinout, ADC122S051QIMMX/NOPB application, or ADC122S051QIMMX/NOPB equivalent, key selection criteria include its AEC-Q100 qualification, 8-pin VSSOP package, 16-cycle throughput timing, straight-binary output format, and channel-to-channel crosstalk of −86 dB at 5V.
Technical Context
The ADC122S051QIMMX/NOPB implements a charge-redistribution DAC architecture with internal track-and-hold, enabling precise sampling across both input channels without external hold capacitors. Its control logic synchronizes conversion, readout, and multiplexer address loading within a single 16-SCLK serial frame.
It operates in two distinct phases per conversion: 3 SCLK cycles in track mode (acquiring input voltage), followed by 13 SCLK cycles in hold/convert mode (successive approximation and MSB-first serial output). The DIN pin accepts an 8-bit control register on each frame's first 8 rising SCLK edges to select the next channel (IN1 or IN2).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 12-bit with no missing codes - ensures monotonicity and full-scale code coverage for accurate sensor digitization. |
| Sample Rate | 200–500 ksps - supports real-time monitoring of fast transients in motor control and power quality systems. |
| INL | ±0.5 LSB (typ) - limits end-point linearity error to <0.012% of full scale, critical for calibrated instrumentation. |
| SNR | 72.5 dB (typ) - enables >11.7 ENOB for high-fidelity signal capture in noisy industrial environments. |
| Power Consumption | 3.0 mW at 3V / 10 mW at 5V - allows battery-powered portable designs with minimal thermal impact. |
| Shutdown Current | 0.14 µW at 3V - reduces standby leakage to sub-nA levels during system sleep modes. |
| Crosstalk | −86 dB - isolates IN1 and IN2 signals, enabling independent measurement of adjacent sensors or phases. |
Pinout & Package
The ADC122S051QIMMX/NOPB is housed in an 8-lead VSSOP (DGK) package with 0.65 mm lead pitch, optimized for automated assembly and thermal performance (θJA = 250°C/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GND | Digital and analog ground reference | Single ground return for die; requires low-impedance connection to minimize noise coupling between digital and analog sections. |
| CS | Chip select / frame sync input | Falling edge initiates conversion and serial frame; high state places device in shutdown with µW-level current draw. |
| SCLK | Serial clock input | Directly controls conversion timing and serial data transfer; supports 50 kHz–16 MHz frequency range with 30–70% duty cycle. |
| DOUT | Serial data output | MSB-first straight-binary output; active only when CS is low; tri-stated when CS is high. |
| DIN | Serial data input | Loads 8-bit control register on first 8 rising SCLK edges of each frame to select next input channel (IN1 or IN2). |
| IN1 | Analog input channel 1 | 0–VA input range; sampled during track phase; supports DC-coupled sensor interfaces. |
| VA | Analog supply voltage | 2.7–5.25 V single supply; also serves as internal reference; requires local 1 µF + 0.1 µF bypassing. |
| IN2 | Analog input channel 2 | Functionally identical to IN1; channel selection controlled via DIN register bits ADD0–ADD2. |
Key Features
| Feature | Design Value |
|---|---|
| Automotive qualification | AEC-Q100 Grade 3 (−40°C to +85°C) and CDM Class C2 - validated for under-hood and chassis-mounted electronics. |
| Variable power management | Dynamic power scaling across 200–500 ksps range - maintains consistent 3.0 mW (3V) or 10 mW (5V) consumption regardless of throughput. |
| Single-supply operation | 2.7–5.25 V analog supply - eliminates need for dual rails or external reference, simplifying power architecture. |
| SPI/QSPI/MICROWIRE compatibility | Native serial interface with no protocol translation - interoperable with TI C2000, STM32, and Renesas RL78 microcontrollers. |
| Channel-to-channel offset match | ±0.1 LSB (typ) - enables differential measurements without hardware calibration across IN1/IN2. |
Applications
| Motor Control Feedback | Automotive Battery Monitoring |
|---|---|
|
Use Scenario: Real-time sampling of phase currents and DC-link voltage in BLDC inverters. IC Role / Device Role / Timing Role: Dual-channel ADC acquires synchronized current (IN1) and voltage (IN2) samples every 2–5 µs for FOC algorithms. Use Value: 12-bit resolution and −86 dB crosstalk prevent cross-channel interference, ensuring accurate torque estimation and overcurrent protection. |
Use Scenario: Monitoring individual cell voltages and pack temperature in 12S Li-ion battery packs. IC Role / Device Role / Timing Role: Simultaneous digitization of two adjacent cell voltages per conversion cycle, supporting daisy-chained BMS topologies. Use Value: AEC-Q100 qualification and 0.1 LSB channel matching enable reliable SoC/SOH calculation without per-cell calibration. |
| Industrial Sensor Hub | Portable Power Analyzer |
|
Use Scenario: Aggregating analog outputs from pressure, temperature, and humidity sensors in predictive maintenance gateways. IC Role / Device Role / Timing Role: Low-power 12-bit ADC interfaces multiple 4–20 mA transmitters via precision resistors, operating at 200 ksps for burst-mode logging. Use Value: 72.5 dB SNR and ±0.5 LSB INL preserve dynamic range and accuracy across sensor types, reducing firmware compensation overhead. |
Use Scenario: Handheld meter capturing voltage/current waveforms for harmonic analysis in commercial buildings. IC Role / Device Role / Timing Role: Dual-input ADC digitizes isolated voltage and current transformers at 500 ksps, feeding FFT engine in ARM Cortex-M7 MCU. Use Value: 16-cycle throughput time and straight-binary output simplify DMA-driven buffer management, enabling continuous 100 ms waveform capture. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-channel 12-bit SAR ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADC122S021QIMMX/NOPB | Lower max sample rate (50–200 ksps); same pinout, package, and interface. | Better suited for low-throughput sensor polling (e.g., HVAC thermostats) where power efficiency at <200 ksps is prioritized. | Select when system sampling requirement is ≤200 ksps and lower dynamic power is needed at reduced speed. |
| ADC122S101QIMMX/NOPB | Higher max sample rate (500 ksps–1 Msps); same pinout, package, and interface. | Required for ultrasonic flow metering or audio-band signal analysis where >500 ksps resolution is mandatory. | Select when design demands ≥1 Msps sustained throughput while retaining identical layout and firmware compatibility. |
Compared with ADC122S021QIMMX/NOPB and ADC122S101QIMMX/NOPB, the ADC122S051QIMMX/NOPB uniquely balances mid-range speed (200–500 ksps), automotive qualification, and ultra-low shutdown power - making it optimal for cost-sensitive, safety-aware embedded systems requiring neither entry-level nor high-end bandwidth.
Availability
ADC122S051QIMMX/NOPB is available at Aetrix Electronics and suitable for motor control feedback, automotive battery monitoring, industrial sensor hubs, and portable power analyzers requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for ADC122S051QIMMX/NOPB includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Texas Instruments is a global semiconductor leader specializing in analog and embedded processing technologies, with decades of expertise in precision data converters and automotive-grade ICs.
The ADC122S051QIMMX/NOPB belongs to TI's automotive-qualified SAR ADC product line, designed specifically for functional-safety-critical sensing in electric powertrain, battery management, and chassis control systems.
FAQ
What is the maximum sample rate supported by the ADC122S051QIMMX/NOPB?
The ADC122S051QIMMX/NOPB supports a guaranteed sample rate range of 200 ksps to 500 ksps across its full operating temperature range (−40°C to +85°C). At 500 ksps, it achieves 12-bit resolution with ±0.5 LSB typical INL and 72.5 dB typical SNR. Operation outside this range is not specified or tested for performance compliance.
Does the ADC122S051QIMMX/NOPB require an external voltage reference?
No, the ADC122S051QIMMX/NOPB uses its VA supply pin (2.7–5.25 V) as the internal reference. This eliminates the need for an external reference but means analog input range is 0 V to VA. Any noise or ripple on VA directly impacts conversion accuracy, so proper bypassing with 1 µF and 0.1 µF capacitors near the pin is mandatory.
How does channel selection work on the ADC122S051QIMMX/NOPB?
Channel selection is controlled via the 3-bit ADD0–ADD2 field in the 8-bit control register loaded on DIN. Writing "00" to ADD1/ADD0 selects IN1; "01" selects IN2. ADD2 is don't-care. The register is loaded during the first 8 rising SCLK edges after CS falls, and configures the *next* conversion - enabling seamless interleaved sampling without reconfiguration delay.
Is the ADC122S051QIMMX/NOPB pin-compatible with other devices in the ADC122Sxx1 family?
Yes, the ADC122S051QIMMX/NOPB is fully pin- and function-compatible with ADC122S021QIMMX/NOPB and ADC122S101QIMMX/NOPB per TI's official documentation. All share identical 8-pin VSSOP packaging, pin assignments, serial interface protocol, and control register structure - allowing drop-in replacement based solely on required sample rate.
What is the power consumption of the ADC122S051QIMMX/NOPB in shutdown mode?
In shutdown mode (CS high), the ADC122S051QIMMX/NOPB draws just 0.14 µW at 3.6 V and 0.32 µW at 5.25 V. This ultra-low quiescent power enables energy harvesting and battery-backed applications where the ADC must remain connected but inactive for extended periods without draining the source.
ADC122S051QIMMX/NOPB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Number of Bits:
- 12
- Sampling Rate (Per Second):
- 500k
- Number of Inputs:
- 2
- Input Type:
- Single Ended
- Data Interface:
- SPI, DSP
- Configuration:
- MUX-S/H-ADC
- Ratio - S/H:ADC:
- 1:1
- Number of A/D Converters:
- 1
- Architecture:
- SAR
- Reference Type:
- Supply
- Voltage - Supply, Analog:
- 2.7V ~ 5.25V
- Voltage - Supply, Digital:
- 2.7V ~ 5.25V
- Features:
- -
- Operating Temperature:
- -40°C ~ 85°C
- Supplier Device Package:
- 8-VSSOP
- Mounting Type:
- Surface Mount
- Grade:
- Automotive
- Qualification:
- AEC-Q100
ADC122S051QIMMX/NOPB FAQ
1.How can I place an order for ADC122S051QIMMX/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for ADC122S051QIMMX/NOPB on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for ADC122S051QIMMX/NOPB reliable?
The price and inventory of ADC122S051QIMMX/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADC122S051QIMMX/NOPB is usually 5 days.
3.What payment methods are accepted for ADC122S051QIMMX/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADC122S051QIMMX/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADC122S051QIMMX/NOPB?
ADC122S051QIMMX/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADC122S051QIMMX/NOPB order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for ADC122S051QIMMX/NOPB?
For technical support, including ADC122S051QIMMX/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADC122S051QIMMX/NOPB requirements.
6.How does Aetrix verify that ADC122S051QIMMX/NOPB is sourced from the original manufacturer or authorized distributors?
All ADC122S051QIMMX/NOPB products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that ADC122S051QIMMX/NOPB meets industry standards.
7.What is the process for return or replacement of ADC122S051QIMMX/NOPB?
All ADC122S051QIMMX/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with ADC122S051QIMMX/NOPB, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The ADC122S051QIMMX/NOPB part is unused and in its original packaging.
Return procedure for ADC122S051QIMMX/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ADC122S051QIMMX/NOPB Tags
-
ADC081C021CIMKX/NOPB
Texas Instruments
-
MCP3021A5T-E/OT
Microchip Technology
-
TLA2024IRUGR
Texas Instruments
-
MCP3221A5T-E/OT
Microchip Technology
-
MCP3221A5T-I/OT
Microchip Technology
-
MCP3221A4T-E/OT
Microchip Technology
-
MCP3221A6T-E/OT
Microchip Technology
-
MCP3221A0T-E/OT
Microchip Technology
-
MCP3221A1T-E/OT
Microchip Technology
-
ADC121S021CIMFX/NOPB
Texas Instruments
-
MCP3001-I/MS
Microchip Technology
-
MCP3001-I/SN
Microchip Technology
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
