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Texas Instruments ADC108S102CIMT/NOPB
- Part No.:
- ADC108S102CIMT/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 16-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
ADC108S102CIMT/NOPB.pdf
- Description:
- IC ADC 10BIT SAR 16TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:115
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Product details
Overview
ADC108S102CIMT/NOPB from Texas Instruments is a low-power, 8-channel, 10-bit successive-approximation ADC with 500 kSPS to 1 MSPS throughput, independent analog/digital supplies (VA = 2.7–5.25 V, VD = 2.7–VA), and SPI/QSPI/MICROWIRE-compatible serial interface. It operates across −40°C to +105°C and targets sensor data acquisition in portable medical instruments and automotive navigation systems.
For engineers reviewing the ADC108S102CIMT/NOPB datasheet, ADC108S102CIMT/NOPB pinout, ADC108S102CIMT/NOPB application, or ADC108S102CIMT/NOPB equivalent, key selection criteria include guaranteed no missing codes, ±0.5 LSB max INL/DNL at 5 V, 9.4 mW typical power at 5 V/1 MSPS, 16-pin TSSOP package, and channel-to-channel isolation of 79.7 dB at 20 kHz.
Technical Context
The ADC108S102CIMT/NOPB implements a charge-redistribution DAC-based successive-approximation architecture with integrated track-and-hold. Its 13-cycle conversion time plus 3-cycle acquisition yields a fixed 16-SCLK throughput cycle per sample, supporting continuous mode with automatic re-entry into track phase.
It features independent VA and VD supplies, enabling noise isolation between analog signal path and digital interface. The control register (loaded via DIN on first 8 SCLK rising edges) selects one of eight analog inputs (IN0–IN7) for each conversion, with straight binary output delivered MSB-first on DOUT during SCLK falling edges 5–14.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 10-bit with guaranteed no missing codes - ensures monotonicity and full code coverage over temperature. |
| Sample Rate | 500 kSPS to 1 MSPS - supports real-time sampling of audio-band and control-loop signals. |
| INL / DNL | ±0.5 LSB (max) at VA = VD = 5.0 V - enables accurate multi-channel calibration without per-channel correction. |
| Power Consumption | 9.4 mW (typ) at 5 V / 1 MSPS; 0.30 µW in shutdown - allows battery-powered operation with rapid wake-up. |
| Analog Input Range | 0 V to VA - eliminates need for external level-shifting when VA serves as reference. |
| Channel Isolation | 79.7 dB at 20 kHz - suppresses crosstalk in multiplexed sensor arrays with shared front-end circuitry. |
| SCLK Frequency | 8 MHz to 16 MHz - compatible with standard microcontroller SPI peripherals without custom clock dividers. |
Pinout & Package
ADC108S102CIMT/NOPB is housed in a 16-lead TSSOP package (4.4 mm × 5.0 mm, 0.65 mm pitch) with exposed thermal pad (not electrically connected). Pin functions are validated per TI SNAS336B Rev. March 2013.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CS | Chip Select | Falling edge initiates conversion sequence; high state places DOUT in high-impedance mode. |
| SCLK | Serial Clock | 8–16 MHz input controlling both conversion timing and serial data transfer synchronization. |
| DIN | Serial Data Input | Loads 8-bit control register on first 8 SCLK rising edges to select IN0–IN7 for next conversion. |
| DOUT | Serial Data Output | Outputs 10-bit result MSB-first on SCLK falling edges 5–14; tri-stated when CS is high. |
| VA | Analog Supply / Reference | +2.7 V to +5.25 V supply; also serves as ADC reference voltage - requires local 1 µF + 0.1 µF bypassing. |
| VD | Digital Supply | +2.7 V to VA supply - powers logic and serial interface; bypass with 0.1 µF capacitor. |
| AGND / DGND | Analog / Digital Ground | Separate ground returns minimize digital switching noise coupling into analog conversion path. |
| IN0–IN7 | Analog Inputs | Eight single-ended inputs; each accepts 0 V to VA; input capacitance is 33 pF (track) / 3 pF (hold). |
Key Features
| Feature | Design Value |
|---|---|
| Independent VA and VD supplies | Enables analog/digital domain isolation - critical for mixed-signal systems where digital noise must not degrade ENOB. |
| SPI/QSPI/MICROWIRE compatibility | Direct interfacing to common microcontrollers and DSPs without protocol translation or glue logic. |
| Variable power management | 0.30 µW shutdown current at 5 V allows >10-year battery life in intermittent-sampling applications. |
| Extended temperature range | −40°C to +105°C operation certified - suitable for under-hood automotive and industrial environments. |
| No power-up delay required | First conversion after power-on delivers full-resolution result for IN0 - simplifies firmware initialization. |
Applications
| Automotive Navigation | Portable Medical Instruments |
|---|---|
Use Scenario: Acquisition of analog signals from inertial measurement units (IMUs), GPS antenna LNA bias, and vehicle speed sensors in compact navigation modules. IC Role / Device Role / Timing Role: 8-channel multiplexed ADC digitizing multiple sensor outputs with synchronized sampling and minimal latency. Use Value: 79.7 dB channel-to-channel isolation prevents cross-coupling between gyro and accelerometer channels, preserving heading accuracy. | Use Scenario: Battery-powered glucose meters and portable ECG monitors requiring low-noise, multi-sensor analog front-end digitization. IC Role / Device Role / Timing Role: Low-power 10-bit ADC converting biopotential and environmental sensor outputs with SPI-compatible readout. Use Value: 9.4 mW typical power at 5 V/1 MSPS extends operating time per charge while maintaining diagnostic-grade linearity (±0.5 LSB INL). |
| Industrial Instrumentation | Mobile Communications Baseband |
Use Scenario: Signal conditioning in programmable logic controller (PLC) analog input modules handling thermocouple, RTD, and 4–20 mA loop signals. IC Role / Device Role / Timing Role: Precision ADC providing calibrated 10-bit resolution across eight field inputs with independent supply rails. Use Value: Guaranteed no missing codes and ±0.5 LSB DNL ensure linear response across full scale - essential for compliance with IEC 61000-4-5 surge immunity testing. | Use Scenario: Digitizing baseband I/Q signals and auxiliary RF front-end monitoring voltages in small-cell femtocell and IoT gateway radios. IC Role / Device Role / Timing Role: High-throughput ADC capturing DC offset, temperature, and PA bias feedback with minimal interface overhead. Use Value: 1 MSPS sample rate and 8–16 MHz SCLK support real-time closed-loop calibration without dedicated DMA channels. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 8-channel, 10-bit SAR ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADS7822U | 8-channel, 12-bit, 200 kSPS max; uses internal reference; no independent VD supply. | Higher resolution but lower speed; less flexible supply scheme limits noise isolation capability. | Choose ADS7822U only if 12-bit resolution is mandatory and 200 kSPS suffices - not suitable for 1 MSPS or split-supply designs. |
| MAX11106ETE+ | 8-channel, 10-bit, 1 MSPS; SPI-compatible; requires external reference; VDD = 2.7–3.6 V only. | Narrower supply range excludes 5 V systems; no independent analog/digital rail option. | Select MAX11106ETE+ for 3.3 V-only designs where external reference precision justifies added BOM cost. |
Compared with ADS7822U and MAX11106ETE+, ADC108S102CIMT/NOPB uniquely combines 1 MSPS throughput, independent VA/VD supplies, and guaranteed ±0.5 LSB linearity in a single 16-pin TSSOP - making it optimal for noise-sensitive, wide-supply-range embedded data loggers.
Availability
ADC108S102CIMT/NOPB is available at Aetrix Electronics and suitable for automotive navigation, portable medical instruments, and industrial instrumentation requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for ADC108S102CIMT/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 company specializing in analog, embedded processing, and high-reliability ICs for industrial, automotive, and communications markets.
The ADC108S102CIMT/NOPB belongs to TI's precision SAR ADC product line, designed specifically for low-power, multi-channel data acquisition in space-constrained, noise-sensitive embedded systems.
FAQ
What is the maximum clock frequency supported by ADC108S102CIMT/NOPB?
The ADC108S102CIMT/NOPB supports an SCLK frequency range of 8 MHz to 16 MHz. Operation outside this range may cause timing violations or invalid conversion results. At 16 MHz, the device achieves its maximum 1 MSPS sample rate with a fixed 16-SCLK throughput cycle per sample, including 3 cycles for acquisition and 13 for conversion and data output.
Does ADC108S102CIMT/NOPB require an external reference voltage?
No, ADC108S102CIMT/NOPB does not require an external reference. It uses the analog supply voltage (VA) as its internal reference, with input range defined as 0 V to VA. This eliminates the need for a separate precision reference IC, reducing BOM count and layout complexity - provided VA is well-bypassed and low-noise.
How is channel selection implemented on ADC108S102CIMT/NOPB?
Channel selection on ADC108S102CIMT/NOPB is controlled via a dedicated 8-bit control register loaded through the DIN pin. Bits ADD2–ADD0 (bits 5–3) determine the input channel (IN0–IN7); bits 7,6,2,1,0 are don't-care. The register is updated on the first 8 rising edges of SCLK after CS falls, and the selected channel is sampled in the subsequent conversion cycle.
What is the power consumption of ADC108S102CIMT/NOPB in shutdown mode?
In shutdown mode (CS high), ADC108S102CIMT/NOPB consumes 0.30 µW typical at VA = VD = 5.0 V and 0.09 µW at 3.0 V. This ultra-low standby power enables energy harvesting and coin-cell applications where periodic wake-up and burst sampling are used to maximize battery life.
Is ADC108S102CIMT/NOPB pin-compatible with other members of the ADC108S family?
Yes, ADC108S102CIMT/NOPB shares identical pinout and footprint with ADC108S022 and ADC108S052 in the same 16-lead TSSOP package. However, performance differs: ADC108S022 is rated for 200 kSPS, ADC108S052 for 500 kSPS, while ADC108S102CIMT/NOPB supports up to 1 MSPS - allowing direct speed upgrades without PCB revision.
ADC108S102CIMT/NOPB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 16-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Number of Bits:
- 10
- Sampling Rate (Per Second):
- 1M
- Number of Inputs:
- 8
- 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 ~ 105°C
- Supplier Device Package:
- 16-TSSOP
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
ADC108S102CIMT/NOPB FAQ
1.How can I place an order for ADC108S102CIMT/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for ADC108S102CIMT/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 ADC108S102CIMT/NOPB reliable?
The price and inventory of ADC108S102CIMT/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADC108S102CIMT/NOPB is usually 5 days.
3.What payment methods are accepted for ADC108S102CIMT/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADC108S102CIMT/NOPB transactions.
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4.How is shipping managed for ADC108S102CIMT/NOPB?
ADC108S102CIMT/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADC108S102CIMT/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 ADC108S102CIMT/NOPB?
For technical support, including ADC108S102CIMT/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADC108S102CIMT/NOPB requirements.
6.How does Aetrix verify that ADC108S102CIMT/NOPB is sourced from the original manufacturer or authorized distributors?
All ADC108S102CIMT/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 ADC108S102CIMT/NOPB meets industry standards.
7.What is the process for return or replacement of ADC108S102CIMT/NOPB?
All ADC108S102CIMT/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with ADC108S102CIMT/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 ADC108S102CIMT/NOPB part is unused and in its original packaging.
Return procedure for ADC108S102CIMT/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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