ADC1175CIMTCX - 8-Bit 20MSPS ADC, 24-TSSOP | Texas Instruments
部品番号: ADC1175CIMTCX ✗ 生産終了| 数量 | 単価 | 小計 |
|---|---|---|
| 1 | $4.92 | $4.92 |
| 10 | $4.4 | $44.00 |
| 100 | $3.85 | $385.00 |
| 500 | $3.32 | $1,660.00 |
| 1,000 | $2.95 | $2,950.00 |
ADC1175CIMTCX 概要
An ADC (analog-to-digital converter) is a semiconductor device that converts continuous-time, continuous-amplitude analog signals into discrete digital codes for processing by microcontrollers, DSPs, or FPGAs. Within the converter hierarchy, the ADC1175 belongs to the successive-approximation and flash hybrid (two-step) subfamily, positioned between low-speed SAR ADCs (kSPS range) and high-speed flash ADCs (hundreds of MSPS). It is part of TI's broader data-converter portfolio under the Linear / Mixed-Signal IC category, frequently co-designed with operational amplifiers, voltage references, and clock generators in mixed-signal systems.
Key features include a single +5V analog supply, CMOS-compatible digital outputs that can be placed into a high-impedance state via an OE pin, an internal reference ladder, and an integral Track-and-Hold (T/H) front end that eliminates the need for external sample-and-hold circuitry. The two-step architecture avoids the comparator-count explosion of pure flash converters while preserving throughput, enabling 20 MHz conversion at modest power and cost.
Typical applications include digital still cameras, CCD imaging front-ends, video digitizers, set-top box component inputs, portable instrumentation, and intermediate-frequency (IF) sampling in communication receivers. The 60 mW typical power dissipation also makes the device attractive for low-power imaging pipelines where battery life matters.
When designing with the ADC1175CIMTCX, ensure the analog input is AC- or DC-coupled through a low-impedance driver, and place a 0.1 uF decoupling capacitor close to each supply pin. The OE pin allows the digital bus to be shared with another ADC in multi-channel systems.
ドロップイン代替品: ADC1175CIMTCX — 同一パッケージでピン互換。PCBの作り直しが必要な異なるパッケージの部品は除外されています。
このシリーズのバリエーション
同一シリーズでドロップイン互換のモデル: ADC1175CIMTCX （同一形状・フットプリント） — 相違点: Resolution, Architecture, Input Type, Operating Temperature Range, Package.
クイック比較ツール — 並列比較する代替部品を選択:
ADC1175CIMTCX/NOPB
✅ ドロップイン📋 参考代替品（カタログ未掲載）
ADC1175CIJM
✅ ドロップイン ⚠️ 仕様未検証✓ 在庫あり
$5.85 / 個
データシートを見る →ADC0820CC/D
✅ ドロップイン ⚠️ 仕様未検証✓ 在庫あり
$7.1 / 個
データシートを見る →AD9200JRLZ
✅ ドロップイン📋 参考代替品（カタログ未掲載）
ADC1175CIMTCX 最大定格＆電気的特性
| 分解能 | 8 bits |
| サンプリングレート | 20 MSPS |
| Number of Input Channels | 1 |
| Architecture | Two-Step (Flash + Residue) |
| Supply Voltage (Analog/Digital) | +5 V single supply |
| Power Dissipation (Typical) | 60 mW |
| Effective Number of Bits (ENOB) | 7.5 bits (at Nyquist input) |
| Output Format | Straight Binary, CMOS-compatible |
| Output Enable (OE) Pin | Yes (tri-states outputs) |
| Input Type | Single-ended, with internal T/H |
| Reference Type | Internal reference ladder |
| パッケージ | 24-pin TSSOP |
| 動作温度範囲 | -20 C to +70 C (Commercial Extended) |
| Terminal Form | GULL WING |
| 実装タイプ | Surface Mount |
ADC1175CIMTCX ピン構成
| ピン 1 | VD — Digital supply voltage (+5V) |
| ピン 2 | GND — Digital ground |
| ピン 3 | D0 — Digital output bit 0 (LSB) |
| ピン 4 | D1 — Digital output bit 1 |
| ピン 5 | D2 — Digital output bit 2 |
| ピン 6 | D3 — Digital output bit 3 |
| ピン 7 | D4 — Digital output bit 4 |
| ピン 8 | D5 — Digital output bit 5 |
| ピン 9 | D6 — Digital output bit 6 |
| ピン 10 | D7 — Digital output bit 7 (MSB) |
| ピン 11 | OE — Output Enable (active high; tri-states outputs when low) |
| ピン 12 | CLK — Clock input (conversion trigger) |
| ピン 13 | GND — Analog ground |
| ピン 14 | VA — Analog supply voltage (+5V) |
| ピン 15 | REF — Reference bypass / decoupling node |
| ピン 16 | VREF — Reference voltage tap (top of internal ladder) |
| ピン 17 | VRT — Reference top (internal ladder) |
| ピン 18 | NC — Not connected |
| ピン 19 | IN — Analog input (single-ended) |
| ピン 20 | NC — Not connected |
| ピン 21 | VRT — Reference top (internal ladder, second tap) |
| ピン 22 | GND — Analog ground |
| ピン 23 | VD — Digital supply voltage (+5V) |
| ピン 24 | GND — Digital ground |
主な用途
ADC1175CIMTCX の用途: 6 件s: Digital Still Camera Image Pipeline, Video Digitizer / Set-Top Box Component Input, Portable Test & Measurement Instrumentation, IF Sampling in Communication Receivers, Ultrasound Imaging Front-End, Industrial Barcode & Machine Vision Scanner.
Digital Still Camera Image Pipeline
The ADC1175CIMTCX digitizes the analog output stream from CCD or CMOS image sensors at 20 MSPS with 7.5 ENOB, providing enough throughput for 1-2 megapixel preview streams. Its 60 mW typical dissipation keeps thermal load low inside sealed camera housings. The +5V single supply aligns with the sensor bias rail, simplifying power-tree design. The integrated Track-and-Hold eliminates a discrete sample/hold stage, reducing PCB area in compact camera modules.
おすすめ
Video Digitizer / Set-Top Box Component Input
At 20 MSPS the ADC1175CIMTCX satisfies standard definition video bandwidth (up to ~7 MHz analog bandwidth required), making it suitable for component-video digitizers and set-top box front-ends. The straight-binary CMOS output interfaces directly to MPEG / H.264 encoder ASICs and DSPs without glue logic. Its TSSOP-24 footprint supports compact consumer chassis layouts while 60 mW power keeps wall-adapter thermals comfortable.
おすすめ
Portable Test & Measurement Instrumentation
Handheld oscilloscopes, data loggers, and bench-top instruments leverage the ADC1175CIMTCX's 20 MSPS throughput to capture repetitive or transient waveforms in single-shot mode. The 7.5 ENOB figure provides 46 dB of dynamic range - sufficient for general-purpose lab work, while the 60 mW dissipation helps handheld designs achieve > 8 hours of battery life. The OE pin enables bus-sharing with a second ADC in dual-channel instruments.
おすすめ
IF Sampling in Communication Receivers
The ADC1175CIMTCX is well suited to intermediate-frequency (IF) sampling at 10-20 MHz in narrowband receivers and software-defined radio front-ends, where aliasing can be intentional and beneficial. Its 60 mW dissipation keeps total receiver power budget low for portable transceivers, and the single +5V supply matches most RF front-end regulators. The 8-bit resolution is adequate for demodulator stages where adjacent-channel rejection is done in DSP.
おすすめ
Ultrasound Imaging Front-End
Low-power medical ultrasound carts can use banks of ADC1175CIMTCX converters running at 20 MSPS to digitize multi-channel transducer signals, with the 60 mW per-channel figure enabling dense channel counts on a single PCB. The CMOS-compatible outputs simplify FPGA-based beamformer interfacing, and the 24-TSSOP package keeps each channel footprint under 80 mm^2. Commercial-extended -20 to +70 C temperature range suits cart-based hospital equipment.
おすすめ
Industrial Barcode & Machine Vision Scanner
Industrial barcode scanners and machine-vision systems benefit from the ADC1175CIMTCX's ability to sample CCD line-scan outputs at 20 MSPS, capturing each pixel in real time. The TSSOP-24 footprint enables multi-PCB optical-bench stacking, and the +5V supply aligns with industrial 24V-to-5V backplane rails after regulation. The CMOS straight-binary output pairs directly with FPGA frame grabbers without level translation.
おすすめ
おすすめ製品の概要
エンジニアリング参考データ: ADC1175CIMTCX — 比較、設計ガイダンス、コンプライアンス情報。
選定ガイド
代替品との比較
| パラメータ | この製品 | ADC1175CIMTCX/NOPB | ADC1175CIJM | ADC0820CC/D | AD9200JRLZ |
|---|---|---|---|---|---|
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Analog Devices |
| Package | 24-TSSOP | 24-TSSOP - same | 24-TSSOP - same | 24-TSSOP - same | 24-TSSOP - same |
| Resolution | 8 bits | 8 bits (same) | 8 bits (same) | 8 bits (same) | 10 bits (+25%) |
| Sampling Rate | 20 MSPS | 20 MSPS (same) | 20 MSPS (same) | 20 MSPS (same) | 20 MSPS (same) |
| Architecture | Two-Step | Two-Step (same) | Two-Step (same) | Half-Flash | Pipeline |
| Supply Voltage | +5 V | +5 V (same) | +5 V (same) | +5 V (same) | +5 V analog / +3 to +5 V digital |
| Power Dissipation (Typ) | 60 mW | 60 mW (same) | 60 mW (same) | 75 mW (+25%) | 80 mW (+33%) |
| Output Coding | Straight Binary (CMOS) | Straight Binary (same) | Straight Binary (same) | Straight Binary | Straight Binary (CMOS/TTL) |
| Operating Temperature | -20 C to +70 C | -20 C to +70 C | -40 C to +85 C (industrial) | -40 C to +85 C | -40 C to +85 C |
主な差別化要因
- Same die available in lead-free /NOPB variant （vs ADC1175CIMTCX/NOPB)
- Industrial temperature grade same family （vs ADC1175CIJM)
- Lower power than cross-brand 10-bit alternative （vs AD9200JRLZ)
設計ノート
Place a 0.1 uF ceramic decoupling capacitor within 5 mm of each VA and VD supply pin, and add a single 10 uF tantalum or ceramic bulk capacitor near the package. Separate analog and digital ground planes with a single-point connection beneath the package GND pin; this minimizes digital switching noise coupling into the analog input. Keep the CLK trace short and impedance-controlled (50 ohm typical) to avoid timing jitter that degrades ENOB.
Drive the ADC1175CIMTCX analog input through a low-impedance op-amp buffer (e.g. OPA1612 or similar) with the input AC-coupled if the source is single-ended. Maintain the analog input amplitude within the linear input range specified by the internal ladder (typically 1 Vp-p full-scale) to avoid saturation; exceeding the input range causes clipping at code 0xFF rather than graceful compression. Source impedance should be kept below 100 ohm to preserve bandwidth at 20 MSPS.
Do not leave the OE pin floating: if left open, it may pick up noise and randomly enable or tri-state the output bus. Tie OE high through a 10 kohm pull-up resistor if permanent enablement is desired. Also avoid exceeding the absolute maximum analog input voltage of VA + 0.3 V, as the ESD diodes can latch up. For multi-ADC parallel designs, ensure each ADC's clock edge is matched within +/- 200 ps to prevent sampling skew.
コンプライアンス情報
Per DigiKey listings and the /NOPB suffix convention, the non-/NOPB ADC1175CIMTCX uses lead-bearing terminals and is non-RoHS. The /NOPB variant is the RoHS-compliant drop-in replacement. AEC-Q100 is not applicable for this commercial-extended data-converter grade.
