DG444CY+ - Quad SPST Analog Switch | Analog Devices
MPN: DG444CY+ ✓ AktifDG444CY+ Ringkasan
An analog switch is a semiconductor device that connects or disconnects an analog signal path under digital control. The DG444 family belongs to the analog switch, interface IC, and signal-routing hierarchy. Each of its four independent SPST channels can interrupt or complete a signal route while preserving operation in either signal direction, making the device useful for test systems, signal conditioning, and controlled analog paths.
The DG444CY+ emphasizes low and predictable channel resistance. Its 85 ohm on resistance supports practical routing of ordinary low-frequency and control signals, while the 4 ohm maximum matching between switches reduces gain or attenuation differences from one channel to another. The 9 ohm maximum flatness specification limits resistance variation over the operating signal range, helping preserve signal consistency as voltage changes.
Power-off isolation prevents the switched paths from conducting when the device is unpowered. The four channels use a 1:1 configuration rather than a multiplexer arrangement, so each channel independently supports a single-pole, single-throw function. This structure is appropriate when the design requires four separate controllable connections rather than time-multiplexed access to fewer signal lines.
Typical uses include automated test equipment, instrumentation, signal routing, sample-and-hold systems, and industrial control interfaces. The 16-SOIC surface-mount package allows the same component to support both signal routing and isolation functions on a compact board. The commercial operating-temperature range extends from 0 C to 70 C.
For layout, route high-impedance or sensitive signal lines away from digital control traces and place the device so switching transients do not couple directly into adjacent measurement paths. Confirm the complete pin assignment and control logic in the manufacturer data sheet before laying out a new PCB or substituting another DG444 suffix.
This page combines the manufacturer product information, distributor listings, family comparison data, practical application guidance, and same-package alternatives. It also highlights where replacement decisions require confirmation of temperature grade, package suffix, and exact on-resistance limits rather than relying on channel count alone.
Pilihan pengganti yang segera untuk DG444CY+ — sama paket, pin-pin kompatibel. Bahagian paket yang berbeza memerlukan kerja ulang PCB diasingkan.
Varietas dalam siri ini
Model serupa yang kompatibel dengan pengganti yang segera DG444CY+ (sama faktor bentuk dan kaki) — berbeza dalam Switch Configuration, Package, Operating Temperature, Process Technology, Signal Direction.
DG444DYZ+
✅ Masuk Drop-In📋 Alternatif rujukan (tidak dalam katalog)
DG444DYZ-T
✅ Masuk Drop-In📋 Alternatif rujukan (tidak dalam katalog)
DG444DY-T1-E3
✅ Masuk Drop-In📋 Alternatif rujukan (tidak dalam katalog)
DG444DY+
✅ Masuk Drop-InHubungi untuk harga
Lihat Datasheet →DG444CY+T
✅ Masuk Drop-In📋 Alternatif rujukan (tidak dalam katalog)
DG444CY+ Penilaian maksimum & Ciri-ciri Elektrik
| Product Type | Quad SPST analog switch IC |
| Number of Circuits | 4 circuits |
| Switch Configuration | 1:1 SPST |
| On Resistance | 85 ohm |
| On-Resistance Matching Between Switches | 4 ohm maximum |
| On-Resistance Flatness Over Signal Range | 9 ohm maximum |
| Signal Direction | Bidirectional analog channel |
| Power-Off Isolation | Supported |
| Suhu Operasi | 0 C to 70 C |
| Temperature Grade | Commercial |
| Kemasan | 16-SOIC |
| Number of Terminals | 16 terminals |
| Gaya Pemasangan | Surface mount |
| Manufacturer Availability | Production |
Panduan Konfigurasi Pin DG444CY+ 16-soic
Konfigurasi pin untuk DG444CY+ (16-soic pakai). Penomeran pin, fungsi, dan garis bentuk koneksi ditakrifkan dalam dokumen pengeluar. Rujuk dokumen untuk kebentuk dan pedoman pengasman.
Tiada data garisan pin yang diperoleh untuk DG444CY+.
Rujuk kepada lembaran data untuk konfigurasi pin penuh.
Aplikasi Biasa
DG444CY+ patut untuk 6 aplikasis: Automated Test Equipment Signal Routing, Precision Measurement Signal Conditioning, Sample-and-Hold Signal Isolation, Industrial Control Signal Switching, Laboratory Instrument Signal Selection, Bidirectional Analog Path Control.
Automated Test Equipment Signal Routing
The DG444CY+ fits automated test equipment that must route or isolate several analog measurement channels under sequencer control. Four independent SPST paths provide more control than a simple mechanical relay network while occupying one 16-SOIC package. The 85 ohm on resistance and 4 ohm maximum matching between switches help limit channel-dependent attenuation, while 9 ohm maximum flatness supports consistent behavior across the signal range. Designers should still evaluate switch capacitance, charge injection, and switching time against the required measurement bandwidth and settling time.
Disebarkan
Precision Measurement Signal Conditioning
The DG444CY+ can serve as a controlled analog switch in precision measurement paths where one of several sensor or conditioning outputs must be connected to a common amplifier or converter. Its bidirectional SPST channels support flexible routing around the polarity of the measured signal. Matching of 4 ohms maximum between switches reduces channel-to-channel resistance variation, while flatness of 9 ohms maximum helps preserve calibration consistency. For high-impedance sensors, account for off leakage and parasitic capacitance, because the 85 ohm on resistance alone does not describe the complete measurement error.
Disebarkan
Sample-and-Hold Signal Isolation
The DG444CY+ is appropriate for sample-and-hold systems in which each switched input must be disconnected during acquisition or processing. Four SPST channels can isolate separate sources and reduce unintended interaction between them. Bidirectional conduction permits use with positive or negative signal references, and power-off isolation helps prevent connected paths from conducting when the switch is unpowered. The practical settling target must account for the complete source impedance, switch resistance, holder capacitance, leakage, and charge injection rather than relying on resistance specifications alone.
Disebarkan
Industrial Control Signal Switching
The DG444CY+ can switch low-level control and analog signaling paths in industrial control equipment operating from 0 C to 70 C. Consolidating four independently controlled SPST connections into one 16-SOIC simplifies routing compared with four discrete relays while preserving analog signal paths. Its 85 ohm on resistance, 4 ohm maximum inter-switch matching, and 9 ohm maximum flatness are useful when several channels must present similar loading. The design must still ensure that control-logic levels, supply voltage, and switched-signal limits remain within the manufacturer ratings.
Disebarkan
Laboratory Instrument Signal Selection
The DG444CY+ is well suited to laboratory instruments that select among several analog inputs for a shared measurement chain. Four bidirectional SPST channels provide independent isolation while limiting board area to one 16-SOIC device. Consistent on resistance across the family helps maintain predictable attenuation when channels are switched, particularly in moderate-impedance sensor systems. Designers should place sensitive routes away from control inputs, use a quiet return path, and confirm leakage, capacitance, and switching-time limits before using the device with high-impedance or high-bandwidth nodes.
Disebarkan
Bidirectional Analog Path Control
The DG444CY+ supports applications where signal flow can occur in either direction, such as bus isolation, bidirectional test paths, or shared analog interfaces. Each of its four SPST channels can be opened or closed independently through digital control. The bidirectional rating avoids assigning a fixed input or output role to each terminal, while 85 ohm on resistance and 9 ohm maximum flatness provide predictable insertion behavior across the signal range. Check the exact common-terminal and control assignments in the manufacturer pin-description table before implementing the board.
Disebarkan
Ringkasan Produk Disebarkan
Data referensi kejuruteraan untuk DG444CY+ — perbandingan, panduan rancangan, dan maklumat kesediaan
Panduan Pilihan
Perbandingan dengan Gantian
| Parametr | Produk Ini | DG444DYZ+ | DG444DYZ-T | DG444DY-T1-E3 | DG444DY+ | DG444CY+T |
|---|---|---|---|---|---|---|
| Brand | Analog Devices | Maxim Integrated | Maxim Integrated | Maxim Integrated | Maxim Integrated | Maxim Integrated |
| Package | 16-SOIC | 16-SOIC | 16-SOIC | 16-SOIC | 16-SOIC | 16-SOIC |
| Number of Circuits | 4 circuits | 4 circuits | 4 circuits | 4 circuits | 4 circuits | 4 circuits |
| Switch Configuration | 1:1 SPST | SPST | SPST | SPST | SPST | SPST |
Penyeberangsung Jelas
- Four independently routable analog channels in one package (vsDG444DYZ+)
- Defined resistance consistency for matched analog paths (vsDG444DY-T1-E3)
- Bidirectional conduction with power-off isolation (vsDG444DY+)
Catatan Desain
Treat the 85 ohm on resistance as part of the complete signal-path impedance rather than as an isolated specification. For a resistive divider, calculate attenuation using the switch resistance together with the source and load impedances. Also compare the 9 ohm maximum on-resistance flatness over the signal range with the largest acceptable change in insertion loss. This is especially important when the DG444CY+ switches a high-impedance sensor or a precision divider network.
Assign the four SPST paths according to the manufacturer pin-description table and keep each switched signal on a continuous return path. Place the 16-SOIC close to the source and destination connectors to minimize trace capacitance and coupling. Keep the four control inputs away from sensitive analog nets, and do not rely on package similarity alone when comparing an orderable suffix. Verify the land pattern and pin-one orientation on the assembly drawing.
Do not select a replacement solely because it is labeled as a quad SPST switch. The DG444 family uses several temperature grades and ordering suffixes, and those choices can change the electrical limits or operating range. Confirm channel count, common-terminal arrangement, control thresholds, supply voltage range, operating temperature, and lifecycle status. For DG444DYZ+ and DG444DYZ-T, the family comparison supports package and terminal consistency, but production qualification still requires an exact-SKU review.
Maklumat Kesediaan
The device is listed as production, but no explicit RoHS, REACH, lead-free, halogen-free, or conflict-minerals declaration is included in the cited product information. AEC-Q100 qualification is not indicated for this commercial switch.
