ADG704BRMZ - 4Ω CMOS 4:1 Mux, 1.8-5.5V, MSOP-10 | ADI
料号： ADG704BRMZ ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $3.42 | $3.42 |
| 10 | $3.08 | $30.80 |
| 100 | $2.74 | $274.00 |
| 500 | $2.45 | $1,225.00 |
| 1,000 | $2.18 | $2,180.00 |
ADG704BRMZ 概述
An analog multiplexer (mux) is a semiconductor switch that selects one of several analog input signals and routes it to a single output line. It sits within the broader hierarchy: analog mux -> analog switch -> signal conditioning -> data acquisition / signal routing. The 4:1 topology is the most common building block for channel expansion in measurement systems, audio routing, communication front-ends, and sensor arrays. CMOS implementations like the ADG704 use MOSFET channels to achieve near-ideal switch behavior - bidirectional current flow, high input impedance, and very low quiescent current - which is essential for battery-powered and precision instrumentation applications.
The ADG704 family is fabricated on an advanced submicron CMOS process that delivers low power dissipation together with high switching speed, low on-resistance, low leakage currents, and wide signal bandwidth. Key features include a 4 Ω maximum on-resistance with flat on-resistance across the input signal range, break-before-make switching action to prevent momentary shorting between channels, a TTL/CMOS-compatible logic interface, and an active-low enable pin (EN) that disables the device and forces the output to a high-impedance state. Typical tON / tOFF of 20 ns / 13 ns (per the manufacturer datasheet) supports high-speed signal multiplexing, while typical quiescent current consumption below 1 µA preserves battery life in portable designs.
In circuit applications, the ADG704 is typically paired with a microcontroller GPIO bank that drives the two address lines (A0, A1) and the enable pin. Each switch conducts equally well in both directions when ON, so the device can be used as either a 4-to-1 mux or a 1-to-4 demux. The wide -3 dB bandwidth above 200 MHz and low distortion make the part suitable for routing analog baseband, audio, video, and digitized RF signals up to tens of megahertz without significant insertion loss.
Typical applications include data acquisition front-ends, audio and video signal routing, communication systems, battery-powered instrumentation, and general-purpose signal routing in industrial and consumer products. The combination of low Ron, wide bandwidth, and tiny MSOP-10 footprint is especially attractive for handheld test equipment, USB test instruments, and space-constrained sensor conditioning boards.
When designing with the ADG704, place 0.1 µF decoupling capacitors as close as possible to VDD and GND, and keep the analog signal traces short and direct to minimize parasitic capacitance. For applications that require higher electrostatic discharge (ESD) protection on the signal pins, an external ESD diode array may be required because the ADG704's ESD rating is limited. Confirm logic-level compatibility between the controller and the A0/A1/EN pins when interfacing to a 1.8 V microcontroller.
This page synthesizes distributor pricing, drop-in alternatives, application pairings, and practical design notes that complement - rather than duplicate - the information in the manufacturer datasheet.
直接替换替代料： ADG704BRMZ ——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：
ADG704BRM
✅ 直接替换📋 参考替代料（不在目录中）
ADG704BRMZ-REEL
✅ 直接替换📋 参考替代料（不在目录中）
ADG704BRMZ-REEL7
✅ 直接替换📋 参考替代料（不在目录中）
ADG1604BRUZ
✅ 直接替换📋 参考替代料（不在目录中）
ADG804BRUZ
✅ 直接替换📋 参考替代料（不在目录中）
ADG704BRMZ 规格参数
| 功能 | 4:1 analog multiplexer (4 single channels) |
| Number of Channels | 4 |
| Configuration | 1 Circuit, SP4T (Single-Pole 4-Throw) |
| On-State Resistance (Ron) | 2.5 Ω typical, 4 Ω maximum |
| On-Resistance Flatness | Low (per datasheet) |
| Supply Voltage (Single Supply) | 1.8 V to 5.5 V |
| Analog Signal Range | Rail-to-rail (0 V to VDD) |
| -3 dB Bandwidth | > 200 MHz |
| Turn-On Time (tON) | 20 ns typical |
| Turn-Off Time (tOFF) | 13 ns typical |
| Switching Action | Break-before-make |
| Enable Pin (EN) | Yes, active-low (Logic 0 disables device) |
| Address Lines | 2 (A0, A1) |
| Logic Compatibility | TTL/CMOS compatible |
| 工作温度范围 | -40 °C to +85 °C |
| 封装 | 10-lead MSOP (RM-10) |
| 安装类型 | Surface Mount |
| RoHS 状态 | Compliant |
ADG704BRMZ 引脚配置
| 引脚 1 | A0 — Logic input - address line 0 (LSB) |
| 引脚 2 | A1 — Logic input - address line 1 (MSB) |
| 引脚 3 | EN — Active-low enable input (Logic 0 disables device) |
| 引脚 4 | GND — Ground reference |
| 引脚 5 | S1 — Analog input/output channel 1 |
| 引脚 6 | S2 — Analog input/output channel 2 |
| 引脚 7 | S3 — Analog input/output channel 3 |
| 引脚 8 | S4 — Analog input/output channel 4 |
| 引脚 9 | D — Common analog output (drain) |
| 引脚 10 | VDD — Positive supply voltage (1.8 V to 5.5 V) |
典型应用
ADG704BRMZ 适用于 6 应用s: Data Acquisition Front-End, Audio Signal Routing, Communication System Signal Routing, Battery-Powered Instrumentation, Video Signal Switching, General-Purpose Test & Measurement.
Data Acquisition Front-End
The ADG704BRMZ's 2.5 Ω typical on-resistance and >200 MHz -3 dB bandwidth make it ideal for multiplexing analog input channels in 4-channel data acquisition systems. Per the manufacturer datasheet, the part's rail-to-rail signal handling and 1.8-5.5 V single-supply operation simplify integration with low-power ADC front-ends in industrial measurement and instrumentation. When placed between the sensor array and the ADC input, the ADG704 introduces less than 0.01% series-resistance error into a 10 kΩ source-impedance path. Unlike reed relays, it offers 20 ns tON / 13 ns tOFF for high-speed channel switching with no mechanical wear, making it suitable for production test systems that perform millions of switching cycles.
推荐
Audio Signal Routing
The ADG704BRMZ provides low-distortion routing of audio signals between multiple sources and a single ADC or DSP input in consumer and professional audio equipment. Per the manufacturer datasheet, the low 2.5 Ω on-resistance and wide >200 MHz bandwidth preserve audio fidelity well beyond the 20 kHz audible range, while the break-before-make action prevents audible clicks during channel transitions. The 1.8-5.5 V supply range matches portable audio codec rails (typical 3.3 V), making it well suited to battery-powered headphone amplifiers and Bluetooth speaker source-switching. Designers should still consider the small -80 dB off-isolation figure when cascading muxes in mixer consoles.
推荐
Communication System Signal Routing
The ADG704BRMZ is well suited to baseband signal routing in communication front-ends, including antenna diversity switching, gain-stage selection, and filter bank switching. With a >200 MHz -3 dB bandwidth per the manufacturer datasheet, the part can pass narrowband IF signals up to tens of megahertz with minimal insertion loss, and the 2.5 Ω on-resistance preserves signal integrity in 50 Ω systems. The CMOS construction gives high OFF isolation that prevents unwanted channel coupling in shared-IF architectures. For higher RF frequencies, designers should evaluate the ADG918/ADG919 SPDT switches from the same Analog Devices portfolio.
推荐
Battery-Powered Instrumentation
The ADG704BRMZ's sub-1 µA quiescent current draw (per the manufacturer datasheet) makes it a strong fit for handheld multimeters, USB test instruments, and field-portable data loggers where battery life is critical. The 1.8 V minimum supply allows direct connection to single-cell Li-ion or two-AA battery stacks without boost conversion, saving board space and quiescent current. Combined with the rail-to-rail signal range, the part can route sensor signals from thermocouples, RTDs, and strain gauges directly to the ADC without external level shifting. Designers should still budget for the small quiescent current draw and use the EN pin to power-gate the mux during sleep modes.
推荐
Video Signal Switching
The ADG704BRMZ can multiplex composite or component video signals between sources and a single video encoder or display input. The >200 MHz -3 dB bandwidth supports standard-definition and higher-resolution video formats without measurable degradation, and the rail-to-rail signal range accommodates 1 V peak-to-peak video levels. Per the manufacturer datasheet, the break-before-make action eliminates the brief short between channels that would otherwise cause visual artifacts. For differential video signals (HDMI, DisplayPort), designers should select a differential switch such as the ADG1408 from the same portfolio.
推荐
General-Purpose Test & Measurement
The ADG704BRMZ serves as a general-purpose signal router in bench-top test instruments, automated test equipment (ATE), and engineering prototypes. Its 4:1 configuration expands the channel count of low-channel oscilloscopes, function generators, and spectrum analyzer inputs by a factor of four without adding significant path loss. The MSOP-10 footprint integrates easily into dense PCB designs, and the active-low EN pin enables simple bus-sharing between multiple muxes. Designers should still verify that the 4 Ω worst-case on-resistance does not introduce unacceptable errors in low-impedance test paths.
推荐
推荐产品汇总
工程参考数据： ADG704BRMZ ——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 | ADG704BRM | ADG704BRMZ-REEL | ADG704BRMZ-REEL7 | ADG1604BRUZ | ADG804BRUZ |
|---|---|---|---|---|---|---|
| Package | MSOP-10 (RM-10) | MSOP-10 (RM-10) - same | MSOP-10 (RM-10) - same | MSOP-10 (RM-10) - same | MSOP-10 (RM-10) - same | MSOP-10 (RM-10) - same |
| Brand | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Analog Devices |
| On-Resistance (typical) | 2.5 Ω | 2.5 Ω | 2.5 Ω | 2.5 Ω | 8 Ω | 5 Ω |
| Supply Voltage Range | 1.8 V to 5.5 V | 1.8 V to 5.5 V | 1.8 V to 5.5 V | 1.8 V to 5.5 V | 1.8 V to 16 V | 1.8 V to 5.5 V |
| Switching Action | Break-before-make | Break-before-make | Break-before-make | Break-before-make | Break-before-make | Break-before-make |
| Enable Pin (EN) | Yes (active-low) | Yes (active-low) | Yes (active-low) | Yes (active-low) | Yes | Yes |
| RoHS Status | Compliant | Non-RoHS (Pb-bearing) | Compliant | Compliant | Compliant | Compliant |
关键差异点
- Lowest typical on-resistance in MSOP-10 4:1 mux family （对比 ADG1604BRUZ)
- Industry-leading >200 MHz -3 dB bandwidth in MSOP-10 （对比 ADG804BRUZ)
- True rail-to-rail signal handling on 1.8 V supply （对比 ADG702LBRM)
设计说明
Place a 0.1 µF decoupling capacitor as close as possible to the VDD pin (pin 10) and use a low-impedance ground plane to minimize digital switching noise coupling into the analog channels. Keep analog signal traces short and direct, and route the A0/A1/EN logic lines away from the S1-S4 and D traces to reduce crosstalk. For bandwidth-critical applications, treat the MSOP-10 exposed pad (if present) as a thermal and ground bond.
The ADG704 operates from 1.8 V to 5.5 V and draws sub-1 µA quiescent current per the manufacturer datasheet. Use the EN pin to power-gate the mux during sleep modes for additional battery savings in portable designs. Adding a small series ferrite bead on VDD can help isolate the mux from noisy digital rails in mixed-signal designs.
For high-frequency analog signals (above 10 MHz), source impedance and load impedance together with the 2.5 Ω on-resistance form a voltage divider that attenuates the signal. Buffer the source with a low-output-impedance op-amp such as the AD8676BRMZ when driving long cables or low-impedance loads. The -80 dB off-isolation is sufficient for most audio and baseband applications but may not be adequate for high-attenuation RF multiplexing.
Do not exceed the absolute maximum supply voltage of 7 V on VDD, and do not apply analog signals beyond the VDD/GND rails without external protection. Do not leave the EN pin floating; tie it to VDD through a 100 kΩ pull-up resistor if not actively driven. Verify the A0/A1 logic levels match the controller GPIO at the chosen supply voltage to avoid channel mis-selection.
合规信息
RoHS compliance indicated by 'Z' suffix in the part number (BRMZ). Non-automotive grade; AEC-Q100 not applicable. Halogen-free status not explicitly listed in the verified web data.
