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Texas Instruments ADC1175-50CILQ/NOPB
- Part No.:
- ADC1175-50CILQ/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 24-WFQFN Exposed Pad
- Datasheet:
-
ADC1175-50CILQ/NOPB.pdf
- Description:
- IC ADC 8BIT TWO-STEP 24WQFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,731
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Product details
Overview
ADC1175-50CILQ/NOPB from Texas Instruments is an 8-bit, 50 MSPS analog-to-digital converter with internal track-and-hold, single +5V operation, and 125 mW typical power consumption. It achieves 6.8 effective bits at 25 MHz input frequency and 50 MHz clock rate, delivering straight binary output formatting for video digitization and CCD imaging systems.
For engineers reviewing the ADC1175-50CILQ/NOPB datasheet, ADC1175-50CILQ/NOPB pinout, ADC1175-50CILQ/NOPB application, or ADC1175-50CILQ/NOPB equivalent, key selection considerations include its 7 pF input capacitance, −54 dB THD (typ), 50 MSPS sampling rate, power-down mode (<5 mW), and dual 24-pin TSSOP/WQFN package support.
Technical Context
The ADC1175-50CILQ/NOPB employs a flash-based architecture with integrated track-and-hold, enabling 50 MSPS conversion while maintaining 6.8 ENOB at 25 MHz input. Its reference ladder accepts externally set or self-biased VRT (2.6 V) and VRB (0.6 V) inputs to define the 2.0 V full-scale range.
Sampling occurs on the falling edge of CLK; data appears at D0–D7 outputs after 2.5 clock cycles plus 14 ns output delay. Digital outputs are CMOS/TTL-compatible and enter high-impedance tri-state during power-down (PD = high), with 140 ns wake-up latency.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 8 bits - guarantees no missing codes across full operating temperature range (−20°C to +75°C). |
| Max Sampling Rate | 50 MSPS (min) - supports real-time digitization of NTSC/PAL video baseband and CCD line rates. |
| THD | −54 dB (typ) at fIN = 4.4 MHz - enables <0.7% differential gain/phase error in electro-optic imaging. |
| ENOB @ 25 MHz | 6.8 bits (typ) - defines usable dynamic resolution for 120 MHz full-power bandwidth analog input. |
| Input Capacitance | 7 pF (typ, CLK high) - reduces drive burden vs. conventional flash ADCs, easing op-amp selection (e.g., LMH6702). |
| Power Consumption | 125 mW (typ), <5 mW in power-down - enables portable digital still camera and battery-constrained imaging modules. |
| Aperture Jitter | 10 ps rms - limits SNR degradation to ≤44 dB at 25 MHz input, critical for high-fidelity video capture. |
Pinout & Package
ADC1175-50CILQ/NOPB is available in a 24-pin WQFN package (NHW0024B) with 0.5 mm pitch and exposed thermal pad. Pin assignments are identical to the 24-pin TSSOP variant (PW), supporting drop-in layout compatibility between packages.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN (19) | Analog input | Accepts signals between VRB and VRT; 7 pF dynamic capacitance requires low-Z driver (e.g., LMH6702). |
| CLK (12) | Digital clock input | Falling-edge triggered sampling; 50 MHz max rate; VIH ≥2.0 V, VIL ≤0.8 V. |
| D0–D7 (3–10) | Digital output bus | Straight binary MSB-first (D7 = MSB); tri-stated when PD = high; 1.8 mA sink capability. |
| PD (1) | Power-down control | Active-high TTL/CMOS input; asserts <5 mW standby mode; 140 ns exit latency to valid data. |
| VRT / VRB (17, 23) | Reference ladder terminals | Define 2.0 V full-scale range (e.g., 2.6 V / 0.6 V); bypassed with 10 µF + 0.1 µF near pins. |
| VRTS / VRBS (16, 22) | Internal bias resistors | Enable self-biasing: short VRT↔VRTS and VRB↔VRBS for nominal 2.6 V / 0.6 V references. |
| AVDD / DVDD (11,13,14,15,18) | +5 V analog/digital supplies | Must share common source but be separately bypassed; AVDD–DVDD delta <0.5 V ensures accuracy. |
| AVSS / DVSS (2,20,21,24) | Analog/digital ground returns | Connected together near package; |DVSS–AVSS| ≤100 mV prevents offset drift and INL degradation. |
Key Features
| Feature | Design Value |
|---|---|
| Single +5 V supply operation | Eliminates dual-rail design complexity and external regulators in portable imaging systems. |
| Internal track-and-hold | Removes need for external sample-hold circuitry, reducing board area and signal path distortion. |
| Industry-standard pinout | Enables direct replacement of legacy 8-bit ADCs (e.g., AD9200 family) without PCB redesign. |
| Self-biasing reference ladder | Reduces BOM count by integrating RRT (320 Ω), RRB (80 Ω), and RREF (270 Ω) ladder resistors. |
| Short-circuit-proof outputs | Withstands momentary output shorts to AVSS/DVSS, improving field reliability in industrial video modules. |
Applications
| Digital Still Cameras | CCD Imaging Systems |
|---|---|
Use Scenario: Digitizing analog output from linear CCD sensors in compact digital cameras. IC Role / Device Role / Timing Role: Primary A/D converter capturing pixel data at up to 50 MSPS with 8-bit precision. Use Value: Low 125 mW power enables extended battery life; 7 pF input capacitance simplifies front-end buffering. |
Use Scenario: Converting analog line-scan signals from scientific or industrial CCD arrays. IC Role / Device Role / Timing Role: High-speed digitizer synchronized to line-clock timing with sub-10 ps aperture jitter. Use Value: 6.8 ENOB at 25 MHz preserves spatial fidelity; self-biased reference reduces calibration overhead. |
| Electro-Optic Targeting | Video Digitization Equipment |
Use Scenario: Real-time analog video capture in military-grade laser rangefinders and IR imagers. IC Role / Device Role / Timing Role: Signal acquisition stage converting modulated detector outputs into digital streams. Use Value: −54 dB THD ensures <1% differential phase/gain error for accurate target edge detection. |
Use Scenario: Baseband digitization in broadcast-quality SD/HD video capture cards and frame grabbers. IC Role / Device Role / Timing Role: Front-end ADC interfacing with video decoders (e.g., TVP5150) and FPGA processors. Use Value: Straight binary output and 50 MSPS rate support ITU-R BT.656 compliant timing without glue logic. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 8-bit, 50 MSPS ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD9200ASTZ-50 | 5 V supply, 50 MSPS, 8-bit, but higher 225 mW power and no integrated track-and-hold. | Requires external TH circuit; less suitable for space-constrained portable designs. | Choose AD9200ASTZ-50 only if legacy footprint compatibility outweighs power and integration trade-offs. |
| MAX1186ETI+ | 3.3 V supply, 50 MSPS, 8-bit, lower 100 mW power, but −48 dB THD and narrower 80 MHz bandwidth. | Better for low-voltage embedded systems; insufficient for demanding video SNR requirements. | Select MAX1186ETI+ when system-level voltage scaling is mandatory and THD >−52 dB is acceptable. |
Compared with AD9200ASTZ-50 and MAX1186ETI+, the ADC1175-50CILQ/NOPB uniquely combines +5 V operation, integrated track-and-hold, −54 dB THD, and 125 mW power-making it optimal for portable video digitization where analog drive simplicity and SNR are prioritized over voltage scaling.
Availability
ADC1175-50CILQ/NOPB is available at Aetrix Electronics and suitable for digital still cameras, CCD imaging systems, and electro-optic targeting equipment requiring stable component supply and long-term production continuity.
Supply support for ADC1175-50CILQ/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 data converters for industrial, automotive, and communications markets.
The ADC1175-50CILQ/NOPB belongs to TI's legacy high-speed ADC portfolio, designed specifically for low-power, portable video and imaging applications requiring 8-bit resolution at 50 MSPS with minimal external components.
FAQ
What is the maximum input frequency supported by the ADC1175-50CILQ/NOPB?
The ADC1175-50CILQ/NOPB supports analog input frequencies up to 120 MHz (full-power bandwidth), with specified AC performance (e.g., 6.8 ENOB, −54 dB THD) validated at 25 MHz input under 50 MHz clock conditions. Performance degrades gradually above 25 MHz but remains functional through the Nyquist limit of 25 MHz for 50 MSPS sampling.
Does the ADC1175-50CILQ/NOPB require external reference voltage sources?
No - the ADC1175-50CILQ/NOPB includes internal reference bias resistors (RRT, RRB, RREF). Connecting VRT to VRTS and VRB to VRBS enables self-biased reference voltages of ~2.6 V and ~0.6 V respectively, eliminating need for external references in most applications.
What is the function of the PD pin on the ADC1175-50CILQ/NOPB?
The PD (Power-Down) pin on the ADC1175-50CILQ/NOPB is an active-high digital control input. When driven high (≥2.0 V), it places the device in a low-power state consuming <5 mW and tri-states all digital outputs (D0–D7). Normal operation resumes within 140 ns after PD is pulled low.
Can the ADC1175-50CILQ/NOPB operate with a 3.3 V supply?
No - the ADC1175-50CILQ/NOPB is specified exclusively for +4.75 V to +5.25 V operation on both AVDD and DVDD. Operation outside this range violates absolute maximum ratings and risks latch-up or parametric failure; it is not compatible with 3.3 V systems.
How does the ADC1175-50CILQ/NOPB handle input signals outside the VRT–VRB range?
Input signals below VRB produce all-zero output codes (0x00); signals above VRT produce all-ones codes (0xFF). The device does not clamp or saturate beyond these boundaries - it cleanly quantizes based on the defined reference window, ensuring predictable digital output behavior across the full analog input range.
ADC1175-50CILQ/NOPB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 24-WFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Number of Bits:
- 8
- Sampling Rate (Per Second):
- 50M
- Number of Inputs:
- 1
- Input Type:
- Single Ended
- Data Interface:
- Parallel
- Configuration:
- S/H-ADC
- Ratio - S/H:ADC:
- 1:1
- Number of A/D Converters:
- 1
- Architecture:
- Two-Step
- Reference Type:
- External, Internal
- Voltage - Supply, Analog:
- 5V
- Voltage - Supply, Digital:
- 5V
- Features:
- -
- Operating Temperature:
- -20°C ~ 75°C
- Supplier Device Package:
- 24-WQFN (4x5)
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
ADC1175-50CILQ/NOPB FAQ
1.How can I place an order for ADC1175-50CILQ/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for ADC1175-50CILQ/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 ADC1175-50CILQ/NOPB reliable?
The price and inventory of ADC1175-50CILQ/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADC1175-50CILQ/NOPB is usually 5 days.
3.What payment methods are accepted for ADC1175-50CILQ/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADC1175-50CILQ/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADC1175-50CILQ/NOPB?
ADC1175-50CILQ/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADC1175-50CILQ/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 ADC1175-50CILQ/NOPB?
For technical support, including ADC1175-50CILQ/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADC1175-50CILQ/NOPB requirements.
6.How does Aetrix verify that ADC1175-50CILQ/NOPB is sourced from the original manufacturer or authorized distributors?
All ADC1175-50CILQ/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 ADC1175-50CILQ/NOPB meets industry standards.
7.What is the process for return or replacement of ADC1175-50CILQ/NOPB?
All ADC1175-50CILQ/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with ADC1175-50CILQ/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 ADC1175-50CILQ/NOPB part is unused and in its original packaging.
Return procedure for ADC1175-50CILQ/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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