THS1215CDWRG4 - 12-Bit 15 MSPS Low-Power ADC SOIC-28 | TI
부품 번호: THS1215CDWRG4 ✓ 활성| 수량 | 단가 | 합계 |
|---|---|---|
| 1 | $9.85 | $9.85 |
| 10 | $8.9 | $89.00 |
| 100 | $7.95 | $795.00 |
| 500 | $6.8 | $3,400.00 |
| 1,000 | $5.7 | $5,700.00 |
THS1215CDWRG4 개요
An ADC (Analog-to-Digital Converter) is a data converter that samples continuous analog voltages and outputs discrete digital codes proportional to the input. ADCs sit between the analog front end (sensors, op-amps, filters) and the digital back end (DSP, FPGA, microcontroller). Within the data-converter taxonomy, the THS1215 is a pipelined successive-approximation-style medium-speed ADC (10-100 MSPS), offering a balance of speed, power and integration. It is widely used in portable and industrial imaging, communications IF strips, and general-purpose embedded data acquisition.
Key features include configurable analog inputs (single-ended, single-ended with offset, and differential), an internal voltage reference, an out-of-range indicator for flexible gain staging, and a low-power power-down mode for battery-driven designs. The pipelined architecture delivers a sustained 15 MSPS conversion rate while keeping typical active power dissipation modest for a 3.3 V single-supply device.
The device uses an internal bandgap reference and a switched-capacitor pipeline core that samples on the rising edge of an external clock. The input track-and-hold supports the three configurable input topologies via the MODE pin, allowing the same silicon to be reused in single-supply DC-coupled, AC-coupled, or pseudo-differential signal chains. Latency is a small number of clock cycles, which is acceptable for asynchronous DSP pipelines.
Typical applications include ultrasound preprocessing front ends, portable CCD/CIS imaging digitizers, baseband IF sampling in software-defined radio, low-power oscilloscope and instrumentation channels, and industrial machine-vision links. The 3.3 V supply simplifies interface to low-cost CMOS DSPs and 3.3 V FPGAs without level shifting.
When designing with this device, drive the analog input through a low-impedance, band-limited amplifier and keep the input common-mode within the specified range. Use a clean, well-decoupled AVDD and provide a low-jitter sample clock; jitter directly degrades SNR at the Nyquist edge.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found on the TI datasheet alone, including cross-package trade-offs and 28-pin SOIC-to-TSSOP substitution guidance.
드롭인 대체품: THS1215CDWRG4 — 동일 패키지, 핀 호환. PCB 재작업이 필요한 다른 패키지 부품은 제외됩니다.
이 시리즈의 변형
다음과 드롭인 호환되는 동일 시리즈 모델: THS1215CDWRG4 (동일 폼 팩터 및 풋프린트) — 차이점: Architecture, Input Type, Number of Channels, Package, Power-Down Mode.
빠른 비교 도구 — 나란히 비교할 대체 부품을 선택하십시오:
THS1215CDWR
✅ 드롭인📋 참조 대체품 (카탈로그에 없음)
THS1215CDWG4
✅ 드롭인📋 참조 대체품 (카탈로그에 없음)
THS1215CDW
✅ 드롭인📋 참조 대체품 (카탈로그에 없음)
THS1215IDWR
✅ 드롭인 ⚠️ 사양 미검증📋 참조 대체품 (카탈로그에 없음)
THS1215CDWRG4 최대 정격 & 전기적 특성
| 분해능 | 12 bit |
| 샘플링 속도 | 15 MSPS |
| Number of Channels | 1 |
| 공급 전압 | 3.3 V (single supply) |
| Input Configuration | Single-Ended / Single-Ended w/ Offset / Differential |
| Architecture | Pipelined |
| Input Type | Single-Ended, Pseudo-Differential, Differential |
| Reference Type | Internal |
| Power-Down Mode | Yes |
| Output Interface | Parallel CMOS |
| Out-of-Range Indicator | Yes |
| 동작 온도 | 0C to +70C (commercial grade) |
| 패키지 | 28-pin SOIC (DW) wide body |
| 실장 유형 | Surface Mount |
| Terminal Form | Gull Wing |
| RoHS 상태 | Compliant (G4 suffix) |
THS1215CDWRG4 핀 구성
| 핀 1 | AVDD — Analog 3.3 V supply |
| 핀 2 | AINP — Analog input positive |
| 핀 3 | AINM — Analog input negative |
| 핀 4 | MODE — Input mode selection |
| 핀 5 | REFT — Reference top (decoupling) |
| 핀 6 | REFB — Reference bottom (decoupling) |
| 핀 7 | AGND — Analog ground |
| 핀 8 | DGND — Digital ground |
| 핀 9 | DRVDD — Digital output driver supply |
| 핀 10 | PD — Power-down input |
| 핀 11 | CLK — Sample clock input |
| 핀 12 | OE — Output enable (active low) |
| 핀 13 | D11 — Data output bit 11 (MSB) |
| 핀 14 | D10 — Data output bit 10 |
| 핀 15 | D9 — Data output bit 9 |
| 핀 16 | D8 — Data output bit 8 |
| 핀 17 | D7 — Data output bit 7 |
| 핀 18 | D6 — Data output bit 6 |
| 핀 19 | D5 — Data output bit 5 |
| 핀 20 | D4 — Data output bit 4 |
| 핀 21 | D3 — Data output bit 3 |
| 핀 22 | D2 — Data output bit 2 |
| 핀 23 | D1 — Data output bit 1 |
| 핀 24 | D0 — Data output bit 0 (LSB) |
| 핀 25 | OTR — Out-of-range indicator |
| 핀 26 | DGND — Digital ground |
| 핀 27 | DRVDD — Digital output driver supply |
| 핀 28 | AVDD — Analog 3.3 V supply |
일반적인 애플리케이션
THS1215CDWRG4 적합 용도: 6 애플리케이션s: Portable Ultrasound Front-End, CCD/CIS Image Digitization, Software-Defined Radio IF Sampling, Low-Power Oscilloscope Channel, Industrial Machine Vision Link, Embedded Data Acquisition Module.
Portable Ultrasound Front-End
The THS1215CDWRG4 fits portable ultrasound preprocessing front ends where 12-bit resolution at 15 MSPS captures returning echo envelopes with adequate dynamic range. Its 3.3 V single-supply operation simplifies battery-powered designs, while the hardware power-down mode minimizes idle current between transmit pulses, extending battery life in handheld probes. Differential input mode rejects common-mode pickup from the high-voltage pulser, and the internal reference keeps the BOM small. Engineers typically pair the ADC with a low-noise LNA (such as the OPA1632) and route the digital bus into a low-cost FPGA or DSP for envelope detection and image formation.
추천
CCD/CIS Image Digitization
In CCD and CIS imaging pipelines, the THS1215CDWRG4 samples analog pixel data at line rates up to 15 MSPS, providing 12-bit resolution for mid-range machine-vision cameras and document scanners. The configurable single-ended input with offset accommodates CIS output levels that may swing near ground, while the parallel CMOS bus interfaces directly to low-cost FPGAs for real-time color reconstruction. Out-of-range indicator flags clipping events for automatic gain control. The wide-body SOIC-28 footprint simplifies hand rework and prototyping compared to smaller TSSOP packages, and the commercial temperature grade covers most indoor imaging applications from 0C to +70C.
추천
Software-Defined Radio IF Sampling
The THS1215CDWRG4 is well-suited for IF sampling in software-defined radio receivers, where its 15 MSPS rate covers IF bandwidths up to approximately 7 MHz by Nyquist. The differential input mode rejects common-mode interference from mixer stages, and the internal reference maintains consistent full-scale range across temperature. Engineers should drive the sample clock from a low-jitter PLL (under 10 ps RMS) to preserve SNR at the Nyquist edge; even moderate jitter of 30 ps can degrade SNR by several dB. The parallel CMOS output feeds directly into an FPGA FFT engine for real-time demodulation of FM, AM, and digital modulation schemes.
추천
Low-Power Oscilloscope Channel
In entry-level bench and handheld oscilloscope designs, the THS1215CDWRG4 digitizes a single analog input channel at 15 MSPS, yielding 7 MHz of usable analog bandwidth. The 12-bit resolution provides four times the vertical resolution of typical 10-bit oscilloscope ADCs, improving the visibility of small signal details. Its 3.3 V supply simplifies integration with low-cost LCD controller ASICs, and the power-down mode allows the ADC to be shut off between trigger events to extend battery life in portable instruments. Designers often combine the THS1215 with a FET-input front-end amplifier and AC-coupling network.
추천
Industrial Machine Vision Link
Industrial machine vision systems benefit from the THS1215CDWRG4's 15 MSPS sampling rate and 12-bit resolution, providing adequate pixel depth for barcode reading, dimensional metrology, and defect inspection. The configurable input modes accommodate line-scan cameras with various output drive characteristics, while the internal reference maintains calibration stability across long production shifts. The wide-body SOIC-28 package tolerates the higher thermal environments of factory floors better than small-outline packages, and the commercial temperature grade covers most enclosed industrial cabinets. Pairing with a low-cost FPGA enables real-time image preprocessing.
추천
Embedded Data Acquisition Module
The THS1215CDWRG4 serves as the ADC heart of general-purpose embedded data acquisition modules for microcontroller-based systems, where its 12-bit resolution and 15 MSPS rate handle vibration analysis, acoustic monitoring, and sensor-array sampling. The parallel CMOS output interfaces directly with low-cost 3.3 V microcontrollers and 32-bit MCUs that have external memory buses, eliminating the need for an FPGA. The hardware power-down mode supports duty-cycled sampling for battery-powered remote sensor nodes. The single 3.3 V supply aligns with modern MCU rails, simplifying power tree design and reducing overall BOM cost in cost-sensitive industrial and consumer products.
추천
추천 제품 요약
엔지니어링 참조 데이터: THS1215CDWRG4 — 비교, 설계 지침 및 규정 준수 정보.
선택 가이드
대체품과의 비교
| 파라미터 | 이 제품 | THS1215CDWR | THS1215CDWG4 | THS1215CDW | THS1215IDWR |
|---|---|---|---|---|---|
| Package | SOIC-28 (DW) | SOIC-28 (DW) - same | SOIC-28 (DW) - same | SOIC-28 (DW) - same | SOIC-28 (DW) - same |
| Brand | Texas Instruments | Texas Instruments - same | Texas Instruments - same | Texas Instruments - same | Texas Instruments - same |
| Resolution | 12 bit | 12 bit - same | 12 bit - same | 12 bit - same | 12 bit - same |
| Sampling Rate | 15 MSPS | 15 MSPS - same | 15 MSPS - same | 15 MSPS - same | 15 MSPS - same |
| Temperature Grade | 0C to +70C (commercial) | 0C to +70C - same | 0C to +70C - same | 0C to +70C - same | -40C to +85C (industrial) - wider range |
| Packaging Format | Tape & Reel (G4 green) | Tape & Reel (standard) | Tube (G4 green) | Tube (standard) | Tape & Reel (industrial grade) |
| Supply Voltage | 3.3 V | 3.3 V - same | 3.3 V - same | 3.3 V - same | 3.3 V - same |
| RoHS Compliance | Yes (G4 suffix) | Yes (non-G4 reel) | Yes (G4 suffix) | Yes (G4 suffix) | Yes |
주요 차별점
- Lowest-cost 12-bit 15 MSPS ADC in TI's SOIC-28 footprint (vs MAX1306ECM+T)
- Single 3.3 V supply eliminates level shifting (vs MAX195BCWE)
- G4 green tape-and-reel for fully RoHS-compliant production (vs THS1215CDWR (non-G4))
설계 노트
The THS1215CDWRG4 operates from a single 3.3 V supply, but the analog (AVDD) and digital driver (DRVDD) rails should be decoupled separately. Place 0.1 uF ceramic bypass capacitors as close as possible to each AVDD and DRVDD pin, with a 10 uF bulk tantalum or ceramic capacitor on each rail. Star-ground the AGND and DGND returns at the ADC ground pin to avoid digital switching noise coupling into the analog input through ground bounce. This split-ground scheme is critical for achieving the rated SNR in the 12-bit pipeline core.
Keep analog input traces short and guarded by ground pours to minimize capacitive coupling from the parallel CMOS data bus. Route the 12-bit data bus (D0-D11) and the sample clock on the opposite side of the PCB from the analog input traces, with a solid ground plane between layers. The MODE pin traces should also be guarded; floating or noisy MODE lines can cause mode-state glitches during transitions. A 4-layer PCB with dedicated power and ground planes is strongly recommended for designs targeting better than 70 dB SNR.
Sample-clock jitter directly degrades ADC SNR per the well-known equation SNR_JITTER = 20*log10(1 / (2*pi*f_in*JITTER_RMS)). For a 7 MHz Nyquist input, even 30 ps RMS of jitter reduces SNR by approximately 2 dB, and 100 ps RMS costs another 10 dB. Drive CLK with a low-jitter clock source (crystal oscillator or dedicated clock generator IC) and place a series-termination resistor close to the CLK pin if the trace is longer than about 25 mm. Avoid sharing the CLK line with other digital signals to prevent crosstalk.
Do not leave the MODE pin floating - tie it directly to AVDD or DGND through a 1 kohm resistor for the desired input topology. Forgetting to assert the OE (output enable, active low) pin during read cycles can lead to bus contention if the digital bus is shared with another device. Always power up the ADC with PD (power-down) de-asserted for at least 100 us before initiating conversions to allow internal bias circuits to settle.
규정 준수 정보
RoHS compliance indicated by G4 suffix on reel. AEC-Q100 not applicable - this is a commercial-grade ADC. For AEC-Q100-qualified equivalents, contact TI directly or refer to TI's automotive-grade ADC portfolio.
