DG406DY - 16-Channel CMOS Analog Multiplexer | Renesas
料号： DG406DY ✓ 量产中DG406DY 概述
A CMOS analog multiplexer is a switching matrix that connects one of many source terminals to a common terminal under digital control. In the broader taxonomy it sits between the analog switch and the interface IC, feeding the signal path of test equipment, data acquisition systems, and audio routing gear. The DG406 series was designed as a pin-compatible plug-in upgrade for the industry-standard DG406/DG407 family and as a drop-in replacement for the popular DG506A and DG507A series devices.
Key features include sixteen analog switches in a 1 x 16:1 single-ended configuration or 8 x 1:1 differential configuration, binary address inputs for channel selection, a separate ENABLE pin for device-level gating, and an internal logic-threshold reference that lets TTL and CMOS logic drive the decode circuit directly from a single supply rail. The part is offered in a plastic SOIC-28 surface-mount package and is listed as an industrial-temperature-grade component.
Internally, the DG406 uses CMOS transmission gates, so the channel impedance stays nearly flat and the leakage is low compared with older junction-type analog switches. The device also provides break-before-make behaviour on channel change, which matters when the mux sits in front of a sample-and-hold stage where charge injection from a half-transitioned switch would corrupt the sample.
Typical uses include audio signal routing in mixing consoles, multiplexed data acquisition front ends, guidance and control systems, sample-and-hold circuits, and general-purpose test equipment where many sensors or sources must share a single instrumentation amplifier channel.
A practical design consideration is supply decoupling: place a local bypass capacitor at each analog supply pin and keep the analog routing traces short and shielded from the digital address lines, because the address decode transitions can couple into the selected channel when the source impedance is high.
This page consolidates the manufacturer datasheet detail, package and ordering information, pin-compatible and drop-in replacement options, and practical layout guidance for engineers who need more than a bare parameter table when placing the DG406DY on a new board.
直接替换替代料： DG406DY ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
DG406EWI
✅ 直接替换📋 参考替代料（不在目录中）
DG406DY-T
✅ 直接替换📋 参考替代料（不在目录中）
DG406CWI
✅ 直接替换📋 参考替代料（不在目录中）
DG506DY
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
DG506EWI
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
DG406DY 规格参数
| Device Type | CMOS analog multiplexer (1 x 16:1 single-ended / 8 x 1:1 differential) |
| Number of Channels | 16 |
| Configuration | 16:1 single-ended / 8:1 differential |
| On-Resistance | 100 ohm |
| Analog Supply Voltage | ±20 V (34 V total) |
| Logic Compatibility | TTL and CMOS compatible digital decode |
| Logic Threshold Reference | Internal voltage reference for logic thresholds |
| ENABLE Input | Yes, for device selection when several multiplexers are present |
| Number of Analog Switches | 16 |
| 封装 | 28-pin SOIC (SOIC-28), surface mount |
| Number of Terminals | 28 |
| Temperature Grade | Industrial |
| 安装方式 | SMD / SMT |
| RoHS 状态 | RoHS compliant |
| Product Category | Multiplexer switch ICs / multiplexers |
| Manufacturer | Renesas Electronics (originally Intersil) |
| Document Revision | Data Sheet Rev. 6 |
DG406DY 28-pin soic (soic-28), surface mount 引脚配置指南
DG406DY（28-pin soic (soic-28), surface mount 封装）的引脚配置。 引脚编号、功能和连接图在制造商数据手册中定义。请参阅该手册以了解确切的封装尺寸和焊接指南。
暂无详细引脚数据： DG406DY.
请参阅 数据手册 以查看完整引脚配置。
典型应用
DG406DY 适用于 6 应用s: Multiplexed Data Acquisition Front End, Audio Signal Routing in Consoles and Mixers, Sample-and-Hold and Instrumentation Amplifier Front Ends, Guidance, Control and Sensor Interleaving, Test and Measurement Equipment, Battery-Powered and Portable Instruments.
Multiplexed Data Acquisition Front End
The DG406DY lets one analog-to-digital converter channel serve up to sixteen analog sources, which is the classic way to cut converter cost in multi-channel measurement systems. Its 1 x 16:1 configuration, 100 ohm on-resistance and low-leakage CMOS transmission gates suit source impedances in the hundreds of ohms to a few kilohms range, and the 100 ohm switch impedance adds far less error than a resistive divider network would. Place the mux close to the converter so the ADC input sees a short, low-capacitance path, bypass each analog supply pin locally, and route the four address lines away from the analog traces. The ENABLE pin allows a second mux to share the same address bus when more than sixteen inputs are needed.
推荐
Audio Signal Routing in Consoles and Mixers
Audio mixers and monitor controllers need to route many line-level sources to a small number of summing and conversion channels, and the DG406DY provides sixteen switchable analog paths with a flat, low-impedance CMOS switch element. The 100 ohm on-resistance keeps insertion loss negligible for line-level signals, and the internal logic-threshold reference lets the address decode be driven directly from TTL or CMOS control logic without level translation. Use the differential capability to balance a stereo pair through the same device if the source is balanced, and place the mux in the analog ground region with its supply pins bypassed to keep switching transients out of the audio path.
推荐
Sample-and-Hold and Instrumentation Amplifier Front Ends
In sample-and-hold circuits the multiplexer sits upstream of the hold capacitor, so the switch must settle cleanly before the sampling instant. The DG406DY provides break-before-make channel change, and its CMOS transmission gates produce less charge injection than junction-type analog switches, which protects the held voltage. The 16-channel arrangement allows sixteen sensors to share one instrumentation amplifier and one converter, reducing analog front-end area. Keep the hold capacitor close to the amplifier input, route the selected channel away from the address lines, and give the analog supplies their own local bypass to prevent the decode transitions from modulating the held sample.
推荐
Guidance, Control and Sensor Interleaving
Guidance and control systems frequently interleave many sensor outputs onto a common analog channel so a single processing chain can service them. The DG406DY handles this with sixteen CMOS switches, an address decoder that accepts standard TTL and CMOS logic, and an ENABLE input that allows the device to be gated off during non-sampling intervals. The 28-pin SOIC package keeps the footprint compact for space-constrained control boards, and the industrial temperature grade suits equipment operating outside consumer environments. Verify the absolute maximum supply ratings for your rail arrangement, and place a bypass capacitor at each supply pin to keep switching noise from coupling into the sensor returns.
推荐
Test and Measurement Equipment
In bench instruments the DG406DY is used to bring many test points or instrument outputs to a single measurement channel, a common technique in ATE and general-purpose lab equipment. Its 100 ohm on-resistance is low enough for most high-impedance measurement front ends, while the internal logic-threshold reference removes the need for a separate level-shifter between the digital control bus and the decode circuit. Because the analog signal path is switched, keep the routing short and terminate unused channels consistently to avoid capacitive coupling between adjacent sources. The ENABLE input is useful for isolating the mux during calibration so that external stimulus can drive the measurement node directly.
推荐
Battery-Powered and Portable Instruments
Portable and battery-powered measurement devices need a multiplexer that adds as little parasitic load as possible to the analog path. The CMOS transmission-gate implementation in the DG406DY draws negligible quiescent current in the off state and presents only the 100 ohm channel resistance when closed, so battery drain is dominated by the downstream converter rather than by the mux. The ENABLE input lets the device be disabled between readings, which further reduces system power. Because the analog supply range extends to plus and minus 20 V for bipolar operation, the same device can be used in a dual-rail instrument or in a single-supply system; confirm the permitted single-supply limits in the manufacturer datasheet for your topology.
推荐
推荐产品汇总
工程参考数据： DG406DY ——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 | DG406EWI | DG406DY-T | DG406CWI | DG506DY | DG506EWI |
|---|---|---|---|---|---|---|
| Package | SOIC-28 | SOIC-28 - same | SOIC-28 - same | SOIC-28 - same | SOIC-28 - same | SOIC-28 - same |
| Brand | Renesas Electronics | Renesas Electronics | Renesas Electronics | Analog Devices | Renesas Electronics | Renesas Electronics |
| Configuration | 1 x 16:1 single-ended / 8 x 1:1 differential | 1 x 16:1 / 8 x 1:1 differential | 1 x 16:1 / 8 x 1:1 differential | 1 x 16:1 / 8 x 1:1 differential | 1 x 16:1 single-ended | 1 x 16:1 single-ended |
| ENABLE Input | Yes | Yes | Yes | Yes | Yes | Yes |
| Logic Interface | TTL and CMOS compatible decode with internal threshold reference | TTL and CMOS compatible decode | TTL and CMOS compatible decode | TTL and CMOS compatible decode | TTL and CMOS compatible decode | TTL and CMOS compatible decode |
| Temperature Grade | Industrial | Industrial | Industrial | Industrial | Industrial | Industrial |
| Generation / Lineage | DG406 improved mux, drop-in replacement for DG506A | DG406 improved mux | DG406 improved mux, tape-and-reel ordering code | DG406 improved mux, Analog Devices / Maxim lineage | DG506A predecessor generation | DG506A predecessor generation, lead-free code |
关键差异点
- Direct drop-in upgrade path from the older DG506A generation （对比 DG506DY)
- Single package supports both single-ended and differential routing （对比 DG407DY)
- Second-source availability in the identical SOIC-28 land pattern （对比 DG406CWI)
- Logic decode with internal threshold reference removes level shifting （对比 DG506EWI)
设计说明
Place a local bypass capacitor at each analog supply pin and connect it directly to the ground plane with a very short loop; the CMOS decode circuit switches current through the supply pins on every channel change. Keep the analog channel routing away from the four address lines and the ENABLE trace, or route the address bus beneath a ground guard on a separate layer. Because the selected source can sit adjacent to the address bus in the SOIC-28 footprint, a ground pour between the analog pins and the logic pins materially reduces crosstalk into high-impedance sources.
The 100 ohm on-resistance adds directly to the source impedance seen by the downstream amplifier, so budget for it in the noise and gain-error calculation: a 100 ohm switch resistance in series with a 10 kohm source is about a 1% gain error before any bandwidth roll-off. Keep the copper run from the mux output to the amplifier or converter input short so that the switch capacitance and board capacitance do not form a low-pass corner inside your signal bandwidth. Place the hold or sampling capacitor at the mux output when the source impedance is high.
Do not assume the four address inputs and the ENABLE pin are 5 V tolerant for a given supply arrangement - the internal threshold reference is what defines the valid logic levels, and the valid input range must be checked against the analog supply in the manufacturer datasheet. Also note that the ENABLE input, not the address inputs, is the correct way to isolate the device during calibration or when several multiplexers share a bus. Finally, verify the absolute maximum total supply voltage before adding a bipolar rail, because the part is rated for a bounded total span.
Estimated: with the supply bypassed locally and a 1 V analog supply plus digital current of roughly 1 mA, the average dissipation is on the order of 2 mW, so the SOIC-28 plastic package has ample thermal margin for most designs. The real supply-noise concern is transient: every address change produces a fast current step in the logic path. Provide separate analog and digital return paths and join them at a single quiet point near the bypass capacitor to prevent decode transients from appearing as a supply ripple on the analog channel.
合规信息
RoHS compliance is stated in the component listings for the DG406DY. The part is an industrial-grade commercial interface IC and is not AEC-Q100 qualified; no REACH, halogen-free or conflict-minerals statement is published for this orderable code.
