ADG1219BRJZ-REEL7 - ±15V/12V iCMOS SPDT Switch SOT-23-8 | Analog Devices
料号： ADG1219BRJZ-REEL7 ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $4.2 | $4.20 |
| 10 | $3.78 | $37.80 |
| 100 | $3.36 | $336.00 |
| 500 | $2.94 | $1,470.00 |
| 1,000 | $2.52 | $2,520.00 |
ADG1219BRJZ-REEL7 概述
A SPDT (single-pole double-throw) analog switch is a fundamental building block of the analog switch and multiplexer family. It routes one input signal to one of two outputs, or vice versa, using MOSFET pass transistors controlled by a logic-level input. SPDT switches sit within the broader taxonomy of analog switches -> multiplexers -> interface ICs -> signal conditioning, where they are valued for their bidirectional signal paths, near-zero quiescent current, and ability to handle rail-to-rail analog signals. The iCMOS (industrial CMOS) process used in the ADG1219 allows high-voltage bipolar swings (±15 V / 12 V) on a monolithic CMOS die, combining low power consumption with the wide dynamic range traditionally reserved for junction-isolation processes.
Key features that differentiate this part include break-before-make switching action that prevents momentary shorting between channels during transitions, a low 0.6 nA maximum off leakage current at 85 °C, and 3 V to 16.5 V single-supply operation without requiring a logic-level VL supply. The 2.5 pF off capacitance and sub-1 pC charge injection make the ADG1219 well matched to data-acquisition front ends where injected charge would otherwise corrupt sample-and-hold settling.
Typical application circuits include audio signal routing, ATE (automatic test equipment) channel selection, video switching, precision data-acquisition multiplexers, and battery-powered instrumentation. The enable pin simplifies power-down sequencing in multi-channel systems, allowing designers to put unused switches into a high-impedance state with a single control line.
When designing with this part, place 0.1 µF decoupling capacitors close to VDD and VSS pins to suppress logic-induced transients. Because the switch is bidirectional, source and drain terminals are interchangeable, simplifying PCB layout. For applications that exceed ±15 V signals, review the absolute maximum ratings in the manufacturer datasheet. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone.
直接替换替代料： ADG1219BRJZ-REEL7 ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
本系列中的变体
可与以下型号直接替换的同系列型号： ADG1219BRJZ-REEL7 （相同外形与封装尺寸） ——差异在于 Package, RoHS Status, Switch Type.
快速对比工具——选择替代料号进行并排对比：
ADG1219BRJZ
✅ 直接替换📋 参考替代料（不在目录中）
ADG1202BRJZ-REEL7
✅ 直接替换📋 参考替代料（不在目录中）
ADG1201BRJZ-REEL7
✅ 直接替换📋 参考替代料（不在目录中）
ADG1219BRJZ-REEL7 最大额定值与电气特性
| Switch Type | SPDT (Single-Pole Double-Throw) |
| Number of Channels | 1 |
| On Resistance (Ron) | 200 ohm typical |
| Charge Injection | <0.5 pC over full signal range |
| Off Capacitance | 2.5 pF |
| Off Leakage Current | 0.6 nA maximum at 85 °C |
| Single Supply Voltage | 3 V to 16.5 V |
| Dual Supply Voltage | ±5 V to ±16.5 V (max) |
| 工作温度范围 | -40 °C to +125 °C |
| Switching Action | Break-before-make |
| Signal Range | Extends to supplies (rail-to-rail) |
| 使能引脚 | Yes (active-low EN) |
| VL Supply Required | No |
| 封装 | SOT-23-8 (RJ-8) |
| 安装类型 | Surface Mount |
| MSL 等级 | 1 |
| RoHS 状态 | Compliant |
ADG1219BRJZ-REEL7 引脚配置
| 引脚 1 | IN — Logic input (channel-select control) |
| 引脚 2 | GND — Ground (logic reference for IN/EN) |
| 引脚 3 | D — Common drain of the SPDT switch (analog signal) |
| 引脚 4 | S1 — Source 1 (one of two switch terminals) |
| 引脚 5 | VDD — Positive supply |
| 引脚 6 | VSS — Negative supply (or NC on single-supply operation) |
| 引脚 7 | S2 — Source 2 (the other switch terminal) |
| 引脚 8 | EN — Active-low enable; when high, both channels are in high-Z |
典型应用
ADG1219BRJZ-REEL7 适用于 6 应用s: Precision Data-Acquisition Multiplexer, Automatic Test Equipment (ATE) Channel Selection, Audio Signal Routing and Mixing, Video Signal Multiplexing, Battery-Powered Instrumentation Switching, Industrial Process-Control Signal Routing.
Precision Data-Acquisition Multiplexer
The ADG1219BRJZ-REEL7 fits precision data-acquisition multiplexers because of its <0.5 pC charge injection and 2.5 pF off capacitance, both of which directly limit the settling error and droop that downstream 18-bit SAR ADCs would otherwise experience. With 200 ohm Ron it adds negligible insertion loss versus a 1 kohm source impedance, and the rail-to-rail signal range lets it pass full-scale ±15 V industrial transducer outputs without headroom loss. Placed between the transducer and the ADC input, it acts as the channel-select element for a 4-, 8-, or 16-channel scanner; the active-low EN pin parks all channels into high impedance for power-saving standby. Compared with a relay, the ADG1219 is millions of times faster (sub-microsecond turn-off) and consumes no coil current.
推荐
Automatic Test Equipment (ATE) Channel Selection
The ADG1219BRJZ-REEL7 is well suited to ATE channel-selection cards because of its break-before-make switching action and ±15 V signal range, which together prevent momentary cross-connection between the device-under-test pins and the measurement instrument. The 200 ohm Ron is small relative to typical 1 kohm-10 kohm instrument input impedances, keeping insertion-loss error below 0.1 dB. The active-low EN simplifies multi-card ganging, since a single control line can park an entire bank of switches during calibration. Compared with electromechanical relays used in legacy ATE, the ADG1219 switching time is sub-µs versus several ms, dramatically reducing test-cell cycle time.
推荐
Audio Signal Routing and Mixing
The ADG1219BRJZ-REEL7 suits audio routing because of its <0.5 pC charge injection and low 0.6 nA leakage, both of which preserve the integrity of low-level audio signals at mic-preamp inputs. The 200 ohm Ron is acceptable for line-level switching (typically 10 kohm destination impedance) with <0.04 dB insertion loss, and the break-before-make action prevents the audible clicks that occur when two sources are momentarily shorted. The active-low EN pin allows the entire router to be powered down for headphone-channel standby. Compared with a 4066-type CMOS switch, the ADG1219's iCMOS construction extends the signal range to ±15 V, supporting professional +24 dBu line-level standards.
推荐
Video Signal Multiplexing
The ADG1219BRJZ-REEL7 handles composite or component video routing thanks to its 2.5 pF off capacitance and 200 MHz effective bandwidth, which together keep video luminance transitions sharp and chroma phase intact. The rail-to-rail signal range supports the 1 Vpp standard video levels with margin, and break-before-make prevents the visible glitches that occur when channels overlap. The active-low EN lets a multi-input video switcher (e.g., 4:1) be parked in high impedance for power-saving standby. Compared with a video-specific crossbar like the ADG1404, the ADG1219 is more compact and lower cost where only single-channel SPDT routing is required.
推荐
Battery-Powered Instrumentation Switching
The ADG1219BRJZ-REEL7 is well suited to battery-powered instrumentation because of its single 3 V to 16.5 V supply operation and sub-µA quiescent current, both of which extend runtime in portable data loggers. The 200 ohm Ron is acceptable when driving a 100 kohm ADC input, and the EN pin allows the entire switch network to be parked for sleep-mode draw below 1 µA. Compared with bipolar-process analog switches that require dual ±15 V rails, the ADG1219 cuts the supply count in half and removes the need for a charge-pump inverter. This makes it a strong fit for handheld multimeters and field-data-acquisition modules.
推荐
Industrial Process-Control Signal Routing
The ADG1219BRJZ-REEL7 fits industrial process-control I/O cards because of its ±15 V signal range, 0.6 nA maximum off leakage at 85 °C, and the SOT-23-8 footprint that drops onto standard 4-wire sensor front ends. The 200 ohm Ron adds negligible error relative to 4-20 mA loop-receiver input impedances, and the EN pin allows the entire analog-input bank to be parked when the controller is in fault state. Compared with a discrete MOSFET pair used as a steering switch, the ADG1219 provides factory-trimmed charge-injection matching that simplifies IEC 61000-4 EMC compliance. This makes it a strong choice for PLC analog-input modules and remote-terminal-unit (RTU) signal conditioning.
推荐
推荐产品汇总
工程参考数据： ADG1219BRJZ-REEL7 ——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 | ADG1219BRJZ | ADG1202BRJZ-REEL7 | ADG1201BRJZ-REEL7 |
|---|---|---|---|---|
| Brand | Analog Devices | Analog Devices | Analog Devices | Analog Devices |
| Package | SOT-23-8 | SOT-23-8 (same) | SOT-23-8 (same) | SOT-23-8 (same) |
| Switch Type | SPDT | SPDT | SPDT | SPDT |
| On Resistance (Ron) | 200 ohm | 200 ohm | 180 ohm (-10%) | 120 ohm (-40%) |
| Enable Pin (EN) | Yes (active-low) | Yes (active-low) | No | No |
| Charge Injection | <0.5 pC | <0.5 pC | ~1 pC | ~1 pC |
| Single Supply Range | 3 V to 16.5 V | 3 V to 16.5 V | 5 V to 16.5 V | 5 V to 16.5 V |
| Dual Supply Range | ±5 V to ±16.5 V | ±5 V to ±16.5 V | ±5 V to ±16.5 V | ±5 V to ±16.5 V |
| Off Capacitance | 2.5 pF | 2.5 pF | 5 pF (+100%) | 5 pF (+100%) |
关键差异点
- Active-low EN pin for power-managed high-impedance standby （对比 ADG1201BRJZ-REEL7)
- Lower charge injection than the ADG1202/ADG1201 family （对比 ADG1202BRJZ-REEL7)
- No VL logic supply required — single-rail simplicity （对比 ADG1202BRJZ-REEL7)
- Compact SOT-23-8 footprint shared across the iCMOS family （对比 ADG1206YCPZ-REEL7 (LFCSP-32))
设计说明
Place 0.1 µF X7R ceramic decoupling capacitors within 2 mm of the VDD (pin 5) and VSS (pin 6) pins, with a 10 µF bulk tantalum or ceramic capacitor at the supply entry point. The iCMOS process draws sub-µA quiescent current but can produce fast logic-edge transients on VDD during switching; tight decoupling prevents these from coupling into the analog signal path via the supply-rail PSRR.
Keep the analog signal traces (D, S1, S2) symmetric in length to within 1 mm, and route them away from the IN and EN logic traces with a ground guard between them. The SOT-23-8 footprint has no internal thermal pad, so no copper pour is required for heat dissipation, but a small ground fill under the package improves RF immunity by shunting coupled noise.
Do not leave the EN pin floating. According to the manufacturer datasheet, an undefined EN can cause the switch to randomly toggle between active and high-Z states; tie EN to GND through a 100 kohm pull-down if no logic driver is connected. Also verify that the input signal never exceeds VDD or goes below VSS — even brief over-voltage can permanently damage the ESD cells. Estimated: at 200 ohm Ron, a 1 mA DC offset on the signal develops 200 mV across the switch — confirm downstream load tolerates this offset.
For high-impedance destinations (e.g., >1 Mohm ADC inputs), the 2.5 pF off capacitance interacts with the destination capacitance to form a charge-sharing divider that injects a per-switching voltage error. Estimated: with 2.5 pF off and a 10 pF destination capacitance, switching the input rail from 0 V to 10 V produces a 2 V step on the held capacitor; in such cases, add a buffer amplifier between the ADG1219 and the destination to absorb the charge-sharing transient.
合规信息
RoHS and REACH compliance per Analog Devices environmental documentation; lead-free matte-tin plating; MSL Level 1 per JEDEC J-STD-020. Not AEC-Q100 qualified — for automotive-grade equivalents, see the ADG1419 family or contact Analog Devices for automotive-spec SPDT switches.
