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Texas Instruments ADC10664CIWMX/NOPB
- Part No.:
- ADC10664CIWMX/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 28-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
ADC10664CIWMX/NOPB.pdf
- Description:
- ADC, FLASH/SUCCESSIVE APPROXIMAT
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
ADC10664CIWMX/NOPB from Texas Instruments is a 10-bit, 360 ns typical conversion time CMOS analog-to-digital converter with integrated sample-and-hold, 4-channel input multiplexer (VIN0–VIN3), and single +5 V supply operation. It delivers −60 dB THD at 50 kHz, supports up to 1.5 MHz sampling rate, and targets high-speed DSP front ends and instrumentation requiring sub-microsecond digitization without external S/H circuitry.
For engineers reviewing the ADC10664CIWMX/NOPB datasheet, ADC10664CIWMX/NOPB pinout, ADC10664CIWMX/NOPB application, or ADC10664CIWMX/NOPB equivalent, key selection criteria include its multistep flash architecture, speed-adjust resistor interface (SPEEDADJ), dual ground separation (AGND/DGND), and guaranteed no missing codes over −40°C to +85°C.
Technical Context
The ADC10664CIWMX/NOPB employs a patented two-step multistep conversion technique: a 6-bit coarse flash stage followed by a 4-bit fine flash stage using shared comparators and resistor ladders. This architecture achieves 360 ns typical conversion time while limiting power dissipation to 235 mW max - significantly lower than full-flash alternatives.
It features fully differential reference inputs (VREF+, VREF−), programmable channel selection via S0/S1 logic, and dual-mode digital interface (Mode 1: S/H-triggered; Mode 2: RD-triggered). Internal timing is self-contained - no external clock required - and conversion completion is signaled via active-low INT output synchronized to RD rising edge.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 10-bit linear output (0–1023 decimal); ensures 9.5-bit ENOB at 50 kHz for precision AC signal capture. |
| Conversion Time | 360 ns typical (Mode 1, 14.0 kΩ SPEEDADJ); enables ≥1.5 MSPS sustained sampling in burst mode. |
| THD @ 50 kHz | −60 dB max; limits harmonic distortion in communication and audio front-end applications. |
| Supply Voltage | +4.5 V to +5.5 V; operates from standard 5 V rail with separate AVCC/DVCC pins for noise isolation. |
| Analog Input Channels | 4-channel multiplexed (VIN0–VIN3); selected via S0/S1 logic during S/H falling edge per Table 1. |
| Reference Interface | Differential VREF+/VREF−; supports ratiometric (0 V to VCC) or offset spans down to 2 V with calibrated linearity. |
| Power Dissipation | 235 mW max at +5 V; achieved via low-comparator-count multistep architecture versus full-flash designs. |
Pinout & Package
ADC10664CIWMX/NOPB is housed in a 28-pin SOIC (Small Outline Integrated Circuit) package with wide-body 300-mil width and 0.050″ lead pitch. Thermal resistance θJA = 78°C/W. Requires separate AGND/DGND grounding and individual 0.1 µF ceramic + 10 µF tantalum bypassing on AVCC and DVCC.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| AVCC, DVCC | Analog & digital supply inputs | Must connect to same +5 V source but bypass independently; decoupling prevents digital noise coupling into analog path. |
| AGND, DGND | Analog & digital ground returns | Separate pins enable star-ground layout; must be tied at single point to avoid ground loops and maintain SNR. |
| VIN0–VIN3 | Four analog input channels | Multiplexed via S0/S1; source impedance ≤500 Ω required for full accuracy at minimum 150 ns sample time. |
| VREF+, VREF− | Differential reference voltage inputs | Define zero-to-full-scale range; support offset spans (e.g., 1 V to 3 V); require low-impedance, low-noise sourcing. |
| S0, S1 | Multiplexer address inputs | Select VIN0–VIN3 per truth table; sampled on S/H falling edge; static control only - no latching after conversion. |
| S/H | Sample/Hold control input | Active-high pulse initiates conversion in Mode 1; duration ≥150 ns ensures valid coarse flash result. |
| RD | Read control input | Active-low strobe reads latched 10-bit data onto DB0–DB9; resets INT on rising edge. |
| CS | Chip select input | Active-low enable for S/H and RD functions; internal AND gate prevents spurious sampling or read cycles. |
| INT | Interrupt output | Active-low open-drain signal asserts at end of conversion; synchronized to RD rising edge for clean handshaking. |
| DB0–DB9 | 10-bit tri-state data outputs | Output latched conversion result; high-impedance when RD inactive; compatible with 5 V TTL/CMOS buses. |
| SPEEDADJ | Conversion speed adjustment | Connect resistor to GND to reduce tCONV: 14.0 kΩ → 360 ns typ; 8.26 kΩ → 470 ns typ; trades linearity for speed. |
Key Features
| Feature | Design Value |
|---|---|
| Built-in Sample-and-Hold | Eliminates need for external S/H circuit; supports accurate digitization of signals up to 250 kHz without aliasing. |
| No External Clock Required | Self-timed conversion using internal oscillator; simplifies system timing design and reduces BOM count. |
| Speed Adjust Pin (SPEEDADJ) | Resistor-programmable conversion time (360 ns or 470 ns typical); enables trade-off between speed and linearity. |
| Memory-Mapped I/O Interface | Appears as memory location or I/O port to microprocessors; requires no glue logic for 8051, Z80, or TMS320 DSPs. |
| No Missing Codes Over Temperature | Guaranteed monotonicity across −40°C to +85°C; critical for closed-loop control and calibration-critical systems. |
Applications
| DSP Front End | Instrumentation Data Acquisition |
|---|---|
Use Scenario: Real-time signal conditioning in TMS320Cxx-based motor control systems where analog sensor outputs (current, position) must be digitized synchronously with PWM updates. IC Role / Device Role / Timing Role: ADC10664CIWMX/NOPB acts as the primary analog front-end digitizer, triggered by DSP GPIO via S/H pin to align sampling with current-sense window. Use Value: 360 ns conversion + built-in S/H enables >1.5 MSPS throughput with deterministic latency - eliminating external S/H and reducing PCB area by 30% vs. discrete solutions. |
Use Scenario: Portable oscilloscope module capturing transient waveforms from piezoelectric sensors in field-deployed test equipment. IC Role / Device Role / Timing Role: ADC10664CIWMX/NOPB serves as the core digitizer, using VREF+ = 3.3 V / VREF− = 0.5 V to match sensor dynamic range and maximize SNR. Use Value: −60 dB THD at 50 kHz and 9.5-bit ENOB ensure faithful reproduction of harmonic content in vibration analysis without post-processing correction. |
| Disk Drive Read Channel | Mobile Telecom Baseband |
Use Scenario: Analog signal recovery from magnetic head preamplifier outputs in legacy HDD servo control circuits. IC Role / Device Role / Timing Role: ADC10664CIWMX/NOPB digitizes position error signal (PES) with precise timing alignment via S/H and INT handshake to servo processor. Use Value: Dual ground (AGND/DGND) and separate AVCC/DVCC bypassing suppress digital switching noise from actuator drivers - maintaining <±1 LSB linearity during seek operations. |
Use Scenario: IF sampling in GSM/EDGE baseband receivers where RF quadrature signals must be converted prior to digital demodulation. IC Role / Device Role / Timing Role: ADC10664CIWMX/NOPB performs simultaneous I/Q sampling using VIN0/VIN1, controlled by DSP via S0/S1 and S/H for phase-coherent capture. Use Value: 4-channel multiplexing + 1.5 MSPS sampling supports dual-channel time-interleaved acquisition - enabling 2× oversampling without doubling component count. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 10-bit, sub-microsecond ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADC10662CIWMX/NOPB | 2-channel input (VIN0/VIN1 only); identical conversion architecture, timing, and specs except S1 pin omitted. | Limited to dual-sensor systems; unsuitable for 4-input multiplexed architectures like multi-phase motor control. | Select ADC10662CIWMX/NOPB only when channel count can be reduced and PCB layout reuses same SOIC footprint. |
| ADS7822U | 12-bit SAR ADC; 2.5 µs conversion time; SPI interface; no internal S/H; requires external clock and driver. | Better resolution but slower; suited for precision DC measurements rather than high-speed AC capture. | Choose ADS7822U when absolute accuracy > linearity and speed; avoid when sub-µs latency or S/H integration is mandatory. |
Compared with ADC10662CIWMX/NOPB, ADC10664CIWMX/NOPB adds two analog inputs and S1 control - enabling 4-channel sequencing without redesign. Versus ADS7822U, it trades 2 bits of resolution for 7× faster conversion and eliminates external S/H and clock circuitry - reducing total system latency and component count.
Availability
ADC10664CIWMX/NOPB is available at Aetrix Electronics and suitable for digital signal processor front ends, instrumentation data acquisition, disk drive servo control, and mobile telecom baseband applications requiring stable component supply, long-lifecycle support, and traceable sourcing.
Supply support for ADC10664CIWMX/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, embedded processing, and high-performance analog ICs with over 50 years of innovation in data converters and signal chain solutions.
The ADC10664CIWMX/NOPB belongs to TI's legacy high-speed CMOS ADC family designed for cost-sensitive, space-constrained systems needing fast, self-contained digitization - particularly in DSP interfacing, test equipment, and industrial control.
FAQ
What is the maximum sampling rate supported by the ADC10664CIWMX/NOPB?
The ADC10664CIWMX/NOPB guarantees a minimum sampling rate of 1.5 MHz under specified conditions (V+ = 5 V, Mode 1, SPEEDADJ = 14.0 kΩ). This is derived from its 466 ns maximum conversion time (tCONV), allowing sustained operation at ≥1.5 MSPS in burst or continuous modes with proper timing margin for S/H and RD handshaking. The ADC10664CIWMX/NOPB achieves this without external clocking or S/H circuitry.
Does the ADC10664CIWMX/NOPB require an external clock signal?
No, the ADC10664CIWMX/NOPB does not require an external clock signal. It uses an internal self-timed oscillator to control both the coarse and fine flash conversion stages. All timing - including sample initiation, conversion duration, and INT assertion - is generated internally. This eliminates clock distribution complexity and jitter sensitivity, making the ADC10664CIWMX/NOPB ideal for systems where clock resources are constrained or noise-sensitive.
How does the SPEEDADJ pin affect performance of the ADC10664CIWMX/NOPB?
The SPEEDADJ pin on the ADC10664CIWMX/NOPB allows resistor-programmable conversion speed: 14.0 kΩ yields 360 ns typical conversion time (Mode 1), while 8.26 kΩ reduces it to 470 ns typical (Mode 2). Lower resistance increases speed but degrades integral linearity error (up to ±1.5 LSB max vs. ±1.0 LSB in Mode 1) and slightly reduces THD. The ADC10664CIWMX/NOPB datasheet provides curves showing linearity vs. resistor value to guide trade-off decisions.
Can the ADC10664CIWMX/NOPB operate with a reference voltage less than 5 V?
Yes, the ADC10664CIWMX/NOPB supports differential reference voltages from 2 V to 5 V applied across VREF+ and VREF−. Reducing the span increases LSB size (e.g., 2 V span → 1.95 mV/LSB) but degrades linearity and offset errors - hence TI recommends ≥2 V. The ADC10664CIWMX/NOPB maintains no missing codes and specified THD/SNR only within the validated 2–5 V range, with performance curves provided in the datasheet for VREF = 2.5 V and 4.5 V.
What is the purpose of separate AGND and DGND pins on the ADC10664CIWMX/NOPB?
The ADC10664CIWMX/NOPB uses separate AGND and DGND pins to isolate analog and digital return currents, minimizing noise coupling from digital switching into the sensitive analog conversion path. TI specifies that both pins must be connected to the same low-impedance ground plane at a single point - typically near the device - to prevent ground loops while preserving SNR and THD performance. This separation is essential to achieve the −60 dB THD and 9.5-bit ENOB specs.
ADC10664CIWMX/NOPB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 28-SOIC (0.295", 7.50mm Width)
- Packaging:
- Bulk
- Product Status:
- Active
- Number of Bits:
- 10
- Sampling Rate (Per Second):
- 1.5M
- Number of Inputs:
- 4
- Input Type:
- Single Ended
- Data Interface:
- Parallel
- Configuration:
- S/H-ADC
- Ratio - S/H:ADC:
- -
- Number of A/D Converters:
- 1
- Architecture:
- Flash
- Reference Type:
- External, Internal
- Voltage - Supply, Analog:
- 5V
- Voltage - Supply, Digital:
- 5V
- Features:
- -
- Operating Temperature:
- -40°C ~ 85°C
- Supplier Device Package:
- 28-SOIC
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
ADC10664CIWMX/NOPB FAQ
1.How can I place an order for ADC10664CIWMX/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for ADC10664CIWMX/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 ADC10664CIWMX/NOPB reliable?
The price and inventory of ADC10664CIWMX/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADC10664CIWMX/NOPB is usually 5 days.
3.What payment methods are accepted for ADC10664CIWMX/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADC10664CIWMX/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADC10664CIWMX/NOPB?
ADC10664CIWMX/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADC10664CIWMX/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 ADC10664CIWMX/NOPB?
For technical support, including ADC10664CIWMX/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADC10664CIWMX/NOPB requirements.
6.How does Aetrix verify that ADC10664CIWMX/NOPB is sourced from the original manufacturer or authorized distributors?
All ADC10664CIWMX/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 ADC10664CIWMX/NOPB meets industry standards.
7.What is the process for return or replacement of ADC10664CIWMX/NOPB?
All ADC10664CIWMX/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with ADC10664CIWMX/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 ADC10664CIWMX/NOPB part is unused and in its original packaging.
Return procedure for ADC10664CIWMX/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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