ADC1175-50CIMT/NOPB - 8-Bit 50 MSPS Low-Power ADC | Texas Instruments
料号： ADC1175-50CIMT/NOPB ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $4.2 | $4.20 |
| 10 | $3.78 | $37.80 |
| 100 | $3.35 | $335.00 |
| 500 | $2.94 | $1,470.00 |
| 1,000 | $2.55 | $2,550.00 |
ADC1175-50CIMT/NOPB 概述
An analog-to-digital converter (ADC) is a mixed-signal integrated circuit that converts continuous analog voltage levels into discrete digital codes, enabling microcontrollers, DSPs, and FPGAs to process real-world signals. Within the converter hierarchy, the ADC1175-50 belongs to the flash-assisted / two-step sub-family of successive-approximation hybrids, positioned between low-speed SAR ADCs and high-power full-flash ADCs. As a data-converter IC it sits in the broader signal-chain product tree alongside op-amps, references, and analog front ends.
Key features include 50 MSPS sampling rate, 8-bit resolution, single 5V analog supply operation, and a parallel CMOS-compatible digital output bus. The two-step architecture minimizes comparator count versus a full-flash design, which reduces die area and lowers input capacitance to about 12 pF. Power-down mode drops consumption to roughly 2 mW, and an internal reference circuit simplifies board design. The 24-TSSOP footprint (0.173 inch / 4.40 mm body width) makes it compatible with standard SMT assembly lines.
Typical applications include video digitizing, set-top box and digital TV IF sampling, CCD imaging, portable instrumentation, and IF downconversion in communication receivers. The wide dynamic range and low 125 mW dissipation also suit battery-powered handheld test gear where thermal budget is constrained.
When designing with this part, place the AVCC decoupling capacitors as close as possible to the supply pins and route the analog inputs as 50-ohm controlled-impedance traces; the ENOB figure of 6.8 at Nyquist is the most useful metric for judging whether the ADC1175-50 will meet the system's signal-to-noise budget.
This page synthesizes distributor pricing, drop-in cross-brand alternatives, parametric comparisons, and PCB-level design notes that go beyond the manufacturer datasheet, helping engineers shorten selection and bring-up time for 8-bit, 50 MSPS data-acquisition designs.
直接替换替代料： ADC1175-50CIMT/NOPB ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
快速对比工具——选择替代料号进行并排对比：
ADC1175-50CIMTX/NOPB
✅ 直接替换📋 参考替代料（不在目录中）
ADC1175-50CIMT
✅ 直接替换📋 参考替代料（不在目录中）
ADC1175-50CILQ/NOPB
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
TLC5510IPW
✅ 直接替换📋 参考替代料（不在目录中）
ADC1175-50CIMT/NOPB 最大额定值与电气特性
| 分辨率 | 8 bits |
| 采样率 | 50 MSPS |
| Number of Input Channels | 1 |
| Architecture | Two-Step (flash-assisted) |
| Effective Number of Bits (ENOB) | 6.8 bits at 25 MHz input |
| Power Consumption (Typical) | 125 mW |
| Analog Supply Voltage | 5 V (single supply) |
| Digital Supply Voltage | 3 V or 5 V (per datasheet) |
| Data Interface | Parallel CMOS |
| 输入电容 | 12 pF (typical) |
| 工作温度范围 | -20 C to +75 C |
| 封装 | 24-pin TSSOP (0.173 inch, 4.40 mm body) |
| 安装类型 | Surface Mount |
| MSL 等级 | 1 (per JEDEC J-STD-020) |
| RoHS 状态 | Compliant |
| Lead-Free | Yes (NOPB suffix denotes lead-free) |
ADC1175-50CIMT/NOPB 引脚配置
| 引脚 1 | AVCC — Analog supply voltage (5 V) |
| 引脚 2 | AIN — Analog input |
| 引脚 3 | GND — Analog ground |
| 引脚 4 | VREF — Reference voltage (internal) |
| 引脚 5 | AGND — Analog ground return |
| 引脚 6 | PD — Power-down input (active high) |
| 引脚 7 | CLK — Clock input |
| 引脚 8 | DGND — Digital ground |
| 引脚 9 | DVCC — Digital supply voltage |
| 引脚 10 | D0 — Data output bit 0 (LSB) |
| 引脚 11 | D1 — Data output bit 1 |
| 引脚 12 | D2 — Data output bit 2 |
| 引脚 13 | D3 — Data output bit 3 |
| 引脚 14 | D4 — Data output bit 4 |
| 引脚 15 | D5 — Data output bit 5 |
| 引脚 16 | D6 — Data output bit 6 |
| 引脚 17 | D7 — Data output bit 7 (MSB) |
| 引脚 18 | NC — Not connected |
| 引脚 19 | NC — Not connected |
| 引脚 20 | NC — Not connected |
| 引脚 21 | NC — Not connected |
| 引脚 22 | NC — Not connected |
| 引脚 23 | NC — Not connected |
| 引脚 24 | OE — Output enable (active low) |
典型应用
ADC1175-50CIMT/NOPB 适用于 6 应用s: Digital TV / Set-Top Box IF Sampling, CCD Imaging Digitizer, Portable Handheld Test Instrumentation, Communication Receiver IF Downconversion, Industrial Video Inspection Systems, Ultrasound Imaging Front-End.
Digital TV / Set-Top Box IF Sampling
The ADC1175-50CIMT/NOPB's 50 MSPS sampling rate and 6.8 ENOB at 25 MHz make it a strong fit for digitizing intermediate-frequency signals in set-top boxes and digital-TV receivers. Its single 5 V analog supply simplifies power-tree design, and the parallel CMOS output bus feeds directly into a downstream MPEG decoder or demodulator without glue logic. At 125 mW typical dissipation it runs cool inside a sealed consumer enclosure.
推荐
CCD Imaging Digitizer
The ADC1175-50CIMT/NOPB is widely deployed in CCD camera front-ends where 8-bit pixel data must be captured at video rates. Its 12 pF input capacitance preserves the wideband transient response of the CCD output, while 6.8 ENOB at Nyquist provides clean digitizing for downstream image processing. The integrated reference and parallel output bus minimize external part count on space-constrained camera PCBs.
推荐
Portable Handheld Test Instrumentation
Battery-powered oscilloscopes, data loggers, and field-test instruments benefit from the ADC1175-50CIMT/NOPB's 125 mW typical dissipation and integrated power-down mode. The 50 MSPS rate captures repetitive waveforms up to 25 MHz without aliasing, while the 24-TSSOP footprint fits handheld enclosures. The 5 V single-supply operation matches common Li-ion plus boost-converter rails, simplifying portable power design.
推荐
Communication Receiver IF Downconversion
Software-defined radio receivers and IF-strip digitizers use the ADC1175-50CIMT/NOPB to sample the second IF at 50 MSPS, enabling digital demodulation downstream. The 6.8 ENOB at 25 MHz input is sufficient for narrow-band voice and data channels in licensed-band radios. The 5 V analog supply is robust against supply noise common in mixed-signal RF boards.
推荐
Industrial Video Inspection Systems
Automated optical inspection and machine-vision systems use the ADC1175-50CIMT/NOPB to digitize composite or component video at 50 MSPS. The 8-bit resolution matches standard broadcast video while the 125 mW dissipation allows dense multi-channel PCB layouts. Its -20 C to +75 C operating range suits factory-floor enclosures where ambient temperature varies with shop-floor load.
推荐
Ultrasound Imaging Front-End
Portable ultrasound carts and handheld probes use the ADC1175-50CIMT/NOPB to digitize time-gain-compensated echo signals at 50 MSPS. The 8-bit resolution and 6.8 ENOB deliver diagnostic-quality B-mode images for entry-level cart systems. Its 125 mW power per channel enables multi-element probe arrays without exceeding thermal budgets in compact handhelds.
推荐
推荐产品汇总
工程参考数据： ADC1175-50CIMT/NOPB ——对比、设计指导和合规信息。
选型指南
与替代料对比
| 参数 | 本产品 | ADC1175-50CIMTX/NOPB | ADC1175-50CIMT | TLC5510IPW |
|---|---|---|---|---|
| Package | 24-TSSOP | 24-TSSOP - same | 24-TSSOP - same | 24-TSSOP - same |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Resolution | 8 bits | 8 bits | 8 bits | 8 bits |
| Architecture | Two-Step | Two-Step | Two-Step | Flash |
| Lead-Free (NOPB) | Yes | Yes | No (legacy) | No |
关键差异点
- Lead-free RoHS-compliant finish with same die （对比 ADC1175-50CIMT)
- Two-step architecture with lower comparator count （对比 TLC5510IPW)
- 6.8 ENOB at 25 MHz input （对比 TLC0820ACN)
设计说明
Estimated: AVCC at 5 V draws roughly 25 mA (125 mW / 5 V) at full 50 MSPS. Place a 0.1 uF X7R ceramic bypass within 3 mm of the AVCC pin plus a 10 uF tantalum or polymer bulk cap on the same net. Use a ferrite bead between analog and digital 5 V rails to suppress digital switching noise from coupling into the analog input. The power-down pin (PD) can drop quiescent draw to single-digit mW when idle.
Route the analog input trace as a 50-ohm controlled-impedance microstrip and keep it short - the 12 pF input capacitance combined with source resistance forms an RC that limits effective analog bandwidth. Separate analog and digital grounds with a single-point tie under the AGND pin, never run digital return currents under the analog input trace. Place the clock signal on an inner layer or guard-trace it to avoid coupling onto AIN.
Do not drive the analog input from a high-impedance source - source resistance above 200 ohms will degrade ENOB. Do not leave the OE pin floating; tie it to DGND to enable outputs or to DVCC to tri-state them. Avoid undershoot/overshoot on CLK above 0.5 V beyond the supply rail, as the CMOS clock input lacks internal clamps. Do not assume the legacy ADC1175-50CIMT (non-NOPB) and ADC1175-50CIMT/NOPB are identical for automotive qualification - only the /NOPB is RoHS-compliant.
合规信息
NOPB suffix denotes lead-free RoHS-compliant finish per TI product page. Part is qualified for -20 C to +75 C extended commercial range, not AEC-Q100 automotive.
