ADC1175CIJMX - 8-Bit 20 MSPS 60 mW ADC | Texas Instruments
MPN: ADC1175CIJMX ✗ End of Life| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $5.42 | $5.42 |
| 10 | $4.85 | $48.50 |
| 100 | $4.1 | $410.00 |
| 500 | $3.55 | $1,775.00 |
| 1,000 | $3.02 | $3,020.00 |
ADC1175CIJMX Overview
An ADC (analog-to-digital converter) is an integrated circuit that converts continuous analog voltage signals into discrete digital codes for processing by microcontrollers, DSPs, FPGAs, or ASICs. 8-bit pipeline/two-step flash ADCs like the ADC1175 occupy the entry-level position in the data converter hierarchy, trading resolution for raw conversion speed. They sit between successive-approximation-register (SAR) ADCs (lower speed, higher accuracy) and full flash ADCs (highest speed, highest power). Within TI's converter portfolio, the ADC1175 belongs to the video/imaging data-converter family.
Key features include 8-bit resolution, 20 MSPS guaranteed conversion rate (with an ADC1175-50 variant reaching 50 MSPS at 125 mW), single +5 V supply operation, an internal reference ladder with top and bottom tap outputs, short-circuit-proof digital outputs, and latch-up resistant construction. The two-step architecture achieves approximately 6.8 effective bits at high input frequencies and offers pin compatibility across the speed grades. According to the TI datasheet for the ADC1175 family, the device is engineered for video, imaging, and communications applications in both line-powered and portable equipment.
The digital interface is a parallel CMOS bus, simplifying connection to FPGA/CPLD or microcontroller parallel ports. The device includes a single-ended analog input that can be AC or DC coupled. The internal reference ladder provides 256 quantization levels, one for each 8-bit code, and the top and bottom reference pins are exposed to allow external reference bypass or ratiometric operation.
Typical applications include digital video, set-top box, CCD imaging digitizers, portable oscilloscopes, ultrasound front-ends, and IF/baseband communications sampling. Designers select the ADC1175-20 (60 mW) for power-sensitive portable systems and the ADC1175-50 (125 mW) when 50 MSPS conversion speed is required.
When designing with the ADC1175CIJMX, ensure that the analog input bandwidth is respected by placing appropriate anti-alias filters and that the +5 V supply is well bypassed with both a 0.1 uF and a 10 uF capacitor near the supply pin. Trade-offs versus full-flash ADCs include lower power but lower input bandwidth and reduced effective number of bits at Nyquist.
This page synthesizes distributor pricing, drop-in alternatives sourced from the same SOIC-24 footprint, and practical design notes that are not present on a single manufacturer datasheet page.
Drop-in alternatives for ADC1175CIJMX — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Variants in this series
Same-series models that are drop-in compatible with ADC1175CIJMX (same form factor and footprint) — differing in Architecture, Operating Temperature, Package / Case, Sampling Rate, Data Interface.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
ADC1175CIJM
✅ Drop-In✓ In Stock
$5.85 / Unit
View Datasheet →ADC1175-50CIJM
✅ Drop-In✓ In Stock
$3.65 / Unit
View Datasheet →ADC0838CCN/NOPB
✅ Drop-In✓ In Stock
$3.21 / Unit
View Datasheet →ADC0844CCN/NOPB
✅ Drop-In✓ In Stock
$6.05 / Unit
View Datasheet →ADC084S101CIMMX
✅ Drop-In✓ In Stock
$1.62 / Unit
View Datasheet →ADC1175CIJMX Maximum Ratings & Electrical Characteristics
| Number of Bits | 8 |
| Sampling Rate (Per Second) | 20M (ADC1175-20); 50M (ADC1175-50) |
| Architecture | Two-Step Flash |
| Number of Inputs | 1 |
| Data Interface | Parallel |
| Input Type | Single-Ended |
| Configuration | ADC |
| Number of A/D Converters | 1 |
| Package / Case | 24-SOIC (0.209 inch, 5.30 mm width) |
| Operating Temperature | -40C to +85C (commercial extended) |
| Temperature Grade | Commercial Extended |
| Terminal Form | Gull Wing |
| No. of Terminals | 24 |
| Package Code | SOP |
| Package Shape | Rectangular |
| Mounting Type | Surface Mount |
ADC1175CIJMX Pin Configuration
| Pin 1 | VIN — Analog input |
| Pin 2 | AGND — Analog ground |
| Pin 3 | VREF_TOP — Reference ladder top tap (bypass) |
| Pin 4 | VREF_BOT — Reference ladder bottom tap (bypass) |
| Pin 5 | AGND — Analog ground |
| Pin 6 | VD — Digital supply (+5 V) |
| Pin 7 | DGND — Digital ground |
| Pin 8 | CLK — Conversion clock input |
| Pin 9 | OE — Output enable (active low) |
| Pin 10 | D0 — Data output bit 0 (LSB) |
| Pin 11 | D1 — Data output bit 1 |
| Pin 12 | D2 — Data output bit 2 |
| Pin 13 | D3 — Data output bit 3 |
| Pin 14 | D4 — Data output bit 4 |
| Pin 15 | D5 — Data output bit 5 |
| Pin 16 | D6 — Data output bit 6 |
| Pin 17 | D7 — Data output bit 7 (MSB) |
| Pin 18 | DGND — Digital ground |
| Pin 19 | NC — Not connected (per datasheet) |
| Pin 20 | NC — Not connected (per datasheet) |
| Pin 21 | NC — Not connected (per datasheet) |
| Pin 22 | VA — Analog supply (+5 V) |
| Pin 23 | AGND — Analog ground |
| Pin 24 | NC — Not connected (per datasheet) |
Typical Applications
ADC1175CIJMX is suitable for 6 applications: Standard-Definition Video Digitizer, CCD Imaging Front-End, Portable Oscilloscope Front-End, Communications IF Sampling, Set-Top Box and Cable Modem Tuner, Ultrasound Imaging AFE.
Standard-Definition Video Digitizer
The ADC1175CIJMX is well suited to composite or component SD video digitizers running at approximately 14.3 MSPS for NTSC or 17.7 MSPS for PAL/SECAM. Its 8-bit resolution is more than adequate for 8-bit video capture pipelines feeding FPGA/CPLD video processing blocks. The single-ended analog input accepts video with standard 1 Vpp or 0.7 Vpp levels through AC coupling, and the 6.8 effective bits at moderate analog input frequencies yield clean luminance/chrominance separation. Place a 4.43 MHz (PAL) or 3.58 MHz (NTSC) low-pass anti-alias filter before the analog input; bypass the +5 V supply with 10 uF + 0.1 uF within 5 mm of the supply pin.
Recommended
CCD Imaging Front-End
The ADC1175CIJMX provides 8-bit, 20 MSPS digitizing capability for CCD line-scan or area-scan camera front-ends in industrial imaging. Its 60 mW typical dissipation keeps thermal load inside sealed camera enclosures low, and the parallel CMOS digital bus interfaces directly to FPGA image-pipeline logic without level translation. The internal reference ladder supports single-ended analog inputs from CCD output amplifiers in the 0 to 2 V range. Anti-alias filtering with a 10 MHz cutoff before the analog input is recommended; TI specifically lists imaging as a primary target application in the ADC1175 datasheet.
Recommended
Portable Oscilloscope Front-End
The ADC1175CIJMX suits portable or handheld oscilloscope front-ends sampling single-shot or repetitive waveforms up to 20 MSPS with 8-bit vertical resolution. Low power consumption (60 mW typical) extends battery runtime, while the parallel output bus streams samples directly to an FPGA or DSP display buffer. The single-ended analog input accepts standard 1X/10X scope probe signals after front-end attenuator/amplifier stages; AC coupling with 0.1 uF removes DC bias. For bandwidth-limited signals below 10 MHz analog input, ENOB near 7.5 is achievable.
Recommended
Communications IF Sampling
The ADC1175CIJMX digitizes IF/baseband communication signals in software-defined-radio (SDR) and IF-sampling receivers up to approximately 10 MHz analog bandwidth. Its parallel CMOS output simplifies integration with FPGA digital down-converters, while 60 mW typical power consumption suits battery-powered handheld radio gear. Ratiometric operation using the internal reference ladder enables ground-referenced or shifted input levels. For higher analog input frequencies (up to 25 MHz) at 50 MSPS clock, the ADC1175-50 variant is recommended, sharing the SOIC-24 footprint for design reuse.
Recommended
Set-Top Box and Cable Modem Tuner
The ADC1175CIJMX serves 8-bit IF sampling in legacy set-top box and cable modem tuner designs where the downstream MPEG decoder requires only 8-bit vertical resolution. Its single +5 V supply integrates cleanly with existing tuner power trees, and the 24-SOIC footprint is compatible with high-volume PCB assembly lines. The internal reference ladder and short-circuit-proof outputs simplify interface to FPGA demodulator logic. Designs targeting this application should verify that the chosen FPGA accepts the ADC1175 parallel output voltage levels directly.
Recommended
Ultrasound Imaging AFE
The ADC1175CIJMX supports low-end ultrasound imaging analog front-ends where 8-bit resolution at 20 MSPS per channel digitizes beam-formed signals after the analog beamforming stage. The 60 mW typical power keeps channel thermal budgets manageable in dense multi-channel probe heads, and the parallel output simplifies time-interleaving across multiple channels. Anti-alias filtering with a 6 MHz low-pass before the analog input is appropriate for typical 5 MHz ultrasound IF frequencies, and the +5 V single-supply operation simplifies probe-cable harness.
Recommended
Recommended Products Summary
Engineering reference data for ADC1175CIJMX — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | ADC1175CIJM | ADC1175-50CIJM | ADC0838CCN/NOPB | ADC0844CCN/NOPB | ADC084S101CIMMX |
|---|---|---|---|---|---|---|
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Package | 24-SOIC (0.209 inch) | 24-SOIC (0.209 inch) - same | 24-SOIC (0.209 inch) - same | 24-SOIC - same | 24-SOIC - same | 24-SOIC - same |
| Sampling Rate | 20 MSPS | 20 MSPS | 50 MSPS | ~30 kSPS | ~30 kSPS | 1 MSPS |
| Resolution | 8 bits | 8 bits | 8 bits | 8 bits | 8 bits | 8 bits |
| Architecture | Two-Step Flash | Two-Step Flash | Two-Step Flash | SAR | SAR | SAR |
| Data Interface | Parallel | Parallel | Parallel | Parallel (SAR) | Parallel (SAR) | SPI |
| Supply Voltage | +5 V single supply | +5 V single supply | +5 V single supply | +5 V single supply | +5 V single supply | +2.7 V to +5.25 V |
| Power Dissipation | 60 mW typ | 60 mW typ | 125 mW typ | ~15 mW | ~15 mW | ~4 mW |
Key Differentiators
- Two-step flash architecture balances speed and power (vs ADC0838CCN/NOPB (8-bit SAR ADC))
- Parallel CMOS digital interface simplifies FPGA integration (vs ADC084S101CIMMX (SPI SAR ADC))
- Pin-compatible speed grade upgrade path (vs ADC1175CIJM (tube pack, 20 MSPS))
Design Notes
Bypass the analog and digital +5 V supply pins (VA, VD) each with a 10 uF tantalum or ceramic bulk capacitor plus a 0.1 uF ceramic capacitor placed within 5 mm of each supply pin. Separate analog and digital ground planes tied at a single point near the ADC reduce digital switching noise coupling into the analog input. Estimated: typical 60 mW consumption gives a 12 mA supply current at +5 V, so the regulator should provide at least 30 mA of headroom for transient spikes during conversion clock edges.
Do not exceed the maximum analog input voltage range specified in the datasheet; signals outside the reference ladder top/bottom rails will saturate the output codes and may damage the input ESD structure if overdriven. Always place an anti-alias filter (typically a 5th-order Butterworth at the Nyquist frequency) before the analog input. The output enable (OE) pin must be driven low to enable the digital outputs; leaving OE floating results in undetermined bus state.
Route the analog input trace as a microstrip above a continuous ground plane to maintain 50 ohm characteristic impedance and minimize crosstalk. Keep the analog input trace short and isolated from the parallel digital output bus (D0-D7), which can inject switching noise through capacitive coupling. Place decoupling capacitors on the same side of the PCB as the ADC with short, wide traces to the supply and ground pins to minimize series inductance.
Compliance Information
Compliance status not explicitly stated in the verified web snippets; verify against TI material declaration document before designing for RoHS/REACH restricted markets. AEC-Q100 not applicable - this is a commercial-grade data converter.
