ADG709CRUZ - 3Ω Low Voltage 4-Ch Differential MUX | Analog Devices
N.º de pieza: ADG709CRUZ ✓ Activo| Cant. | Precio unitario | Total |
|---|---|---|
| 1 | $4.32 | $4,32 |
| 10 | $3.88 | $38,80 |
| 100 | $3.18 | $318,00 |
| 500 | $2.74 | $1.370,00 |
| 1.000 | $2.39 | $2.390,00 |
| 3.000 | $2.05 | $6.150,00 |
ADG709CRUZ Descripción general
A CMOS analog multiplexer is a precision switching element that routes one of several analog signals to a common output under digital control, forming the analog front end of data acquisition, instrumentation, and signal-routing systems. Multiplexers such as the ADG709 sit hierarchically between simple analog switches (single SPST functions) and larger crosspoint/fanout switches. They are fundamental building blocks inside data acquisition systems (DAQ), communication transceivers, audio/video routing, battery-powered sensor conditioning, and any design that needs to time-share a single high-performance ADC across multiple analog sources.
Key features of the ADG709CRUZ include 100 pA typical leakage at 25 °C, break-before-make switching to eliminate momentary shorting between channels, low power consumption (typically < 1 µW), an active-high EN pin for disabling all channels simultaneously, and TTL-/CMOS-compatible digital inputs across the full supply range. The wide supply tolerance lets a single board design serve 3.3 V and 5 V rails without hardware changes.
The device uses a charge-pump-friendly CMOS switch architecture with N-channel FET pass transistors controlled by on-chip level shifters. This yields low on-resistance that remains flat across the analog input range, minimizing total harmonic distortion (THD) when routing audio signals or wide-swing sensor outputs.
Typical applications include data acquisition front-ends (multiplexing thermocouples, RTDs, or strain gauges to a single ADC), audio/video signal routing, communication systems, battery-powered portable instruments, relay-replacement circuits in industrial controls, and automotive sensor multiplexing. Designers should keep input signals within the supply rails and add small guard traces to maintain flat RON performance at high frequencies.
When laying out the PCB, place decoupling capacitors (100 nF plus 10 µF bulk) as close as possible to VDD and GND. Avoid routing digital address lines near analog traces to prevent capacitive coupling into the signal path. This product page consolidates distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.
Alternativas directas para ADG709CRUZ — mismo encapsulado, compatible pin a pin. Se excluyen las piezas de otro encapsulado que requieren retrabajo de la PCB.
Variantes de esta serie
Modelos de la misma serie compatibles directamente con ADG709CRUZ (mismo factor de forma y huella) — difiere en Number of Channels, Package, Configuration, Supply Voltage Range.
Herramienta de comparación rápida — seleccione piezas alternativas para compararlas lado a lado:
ADG709BRUZ-REEL7
✅ Sustitución directa✓ En stock
$1.76 / unidad
Ver hoja de datos →ADG709CRUZ-REEL7
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
ADG709BRUZ-REEL7
✅ Sustitución directa✓ En stock
$1.76 / unidad
Ver hoja de datos →ADG708BRUZ
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
MAX4659EUE
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
TS3A4751PWR
✅ Sustitución directa✓ En stock
$0.31 / unidad
Ver hoja de datos →ADG709CRUZ Especificaciones
| Función | Differential 4:1 analog multiplexer |
| Number of Channels | 4 differential (2 circuits) |
| Configuration | 4:1 MUX |
| On-Resistance (RON) | 3 Ω typical, 4.5 Ω max |
| On-Resistance Flatness | 0.75 Ω |
| Leakage Current (Source/Drain Off) | 100 pA typical at 25 °C |
| Switching Time (tON / tOFF) | 14 ns / 14 ns typical |
| Supply Voltage - Single | 1.8 V to 5.5 V |
| Supply Voltage - Dual | ±2.5 V |
| Temperatura de funcionamiento | -40 °C to +125 °C |
| Digital Input Logic | TTL/CMOS-compatible |
| Enable Input | Active-high EN; disables all channels when low |
| Encapsulado | 16-pin TSSOP (RU-16) |
| Tipo de montaje | Surface Mount |
| Nivel MSL | 1 (unlimited) |
| Estado RoHS | Compliant |
| Automotive Qualification | Qualified for automotive applications (per datasheet family) |
Configuración de pines de ADG709CRUZ
| Pin 1 | A1 — Address line 1 (LSB/MSB per datasheet) |
| Pin 2 | EN — Active-high enable; disables all channels when low |
| Pin 3 | VDD — Positive supply voltage |
| Pin 4 | GND — Ground |
| Pin 5 | S1A — Differential input 1, pin A |
| Pin 6 | S1B — Differential input 1, pin B |
| Pin 7 | S2A — Differential input 2, pin A |
| Pin 8 | S2B — Differential input 2, pin B |
| Pin 9 | S3A — Differential input 3, pin A |
| Pin 10 | S3B — Differential input 3, pin B |
| Pin 11 | S4A — Differential input 4, pin A |
| Pin 12 | S4B — Differential input 4, pin B |
| Pin 13 | DA — Differential output, pin A |
| Pin 14 | DB — Differential output, pin B |
| Pin 15 | A0 — Address line 0 (LSB/MSB per datasheet) |
| Pin 16 | GND — Ground (per datasheet pinout) |
Aplicaciones típicas
ADG709CRUZ es adecuado para 7 aplicacións: Data Acquisition Front-End, Audio and Video Signal Routing, Communication System Signal Routing, Battery-Powered Portable Instruments, Relay Replacement in Industrial Controls, Automotive Sensor Multiplexing, Precision Test and Measurement.
Data Acquisition Front-End
The ADG709CRUZ is ideal for multiplexing multiple sensor inputs (thermocouples, RTDs, strain gauges, pressure sensors) into a single high-resolution ADC. Its 3 Ω typical on-resistance and 0.75 Ω flatness minimize insertion-loss errors and channel-to-channel gain mismatch, while 100 pA typical leakage preserves ADC accuracy on high-impedance sources. The 14 ns switching speed supports multiplexed sampling rates up to several hundred kSPS. Designers typically place the ADG709 between the sensor conditioning amplifiers and the ADC, using the EN line to gate the MUX during ADC reference settling for maximum measurement integrity.
Recomendado
Audio and Video Signal Routing
The ADG709CRUZ's 3 Ω on-resistance and 0.75 Ω RON flatness make it well-suited for routing audio signals where low distortion and flat frequency response are required. Low channel-to-channel capacitance preserves high-frequency video bandwidth, while the break-before-make switching prevents audible clicks during channel changes. Operating from 1.8 V to 5.5 V single supply lets it interface to both legacy ±5 V analog stages and modern 3.3 V codecs. Designers route the ADG709 between input sources and the audio DAC or video ADC, with EN used for hardware-based channel mute.
Recomendado
Communication System Signal Routing
In communication transceivers and baseband processing boards, the ADG709CRUZ switches RF-modulated baseband signals between antenna chains, filter banks, or modem test points. The 14 ns switching time supports packet-level reconfiguration, while the 1.8 V to 5.5 V supply range accommodates both legacy and modern logic interfaces. Low on-resistance preserves signal amplitude across the analog path. The active-high EN pin lets the host controller disable all channels during sleep mode, dropping quiescent draw to sub-microamp levels for portable and battery-powered transceivers.
Recomendado
Battery-Powered Portable Instruments
The ADG709CRUZ consumes less than 1 µW of quiescent power and operates from a single 1.8 V to 5.5 V supply, making it ideal for handheld multimeters, portable medical monitors, and field test instruments. Sub-100 pA leakage prevents battery depletion through signal-source leakage paths when channels are off. The 16-pin TSSOP package occupies minimal PCB real estate. Designers connect the ADG709 between sensor inputs and the measurement ADC, using EN to disconnect all channels during sleep for sub-µA standby currents.
Recomendado
Relay Replacement in Industrial Controls
The ADG709CRUZ replaces electromechanical relays in PLC digital I/O modules, industrial sensor multiplexers, and process-control signal routing, providing silent, bounce-free switching at microsecond speeds. Unlimited cycle life eliminates the mechanical wear that plagues relays in high-cycle applications. The 1.8 V to 5.5 V supply range and TTL/CMOS inputs allow direct connection to 3.3 V or 5 V logic without level shifters. Designers parallel multiple ADG709 devices for higher fan-out, and the EN pin enables hardware-based safe-state shutdown.
Recomendado
Automotive Sensor Multiplexing
The ADG709CRUZ is qualified for automotive applications and operates from -40 °C to +125 °C, making it suitable for ECU sensor multiplexing, battery management systems, and infotainment signal routing. Low on-resistance preserves signal integrity for low-level sensor outputs, while the differential topology rejects common-mode noise from the automotive power environment. The TSSOP-16 footprint simplifies integration into space-constrained ECU modules. Designers add TVS diodes on signal lines exposed to load-dump transients and route analog signals away from high-current traces.
Recomendado
Precision Test and Measurement
In automated test equipment and bench instruments, the ADG709CRUZ routes signals between the device under test (DUT), reference sources, and measurement instruments. The 3 Ω on-resistance and 0.75 Ω flatness minimize measurement errors, while 14 ns switching enables rapid channel reconfiguration in production test. Low leakage preserves the integrity of high-impedance measurement paths. Designers use EN to synchronize multiplexer switching with measurement timing, and add calibration routines to characterize channel offset.
Recomendado
Resumen de productos recomendados
Datos de referencia de ingeniería para ADG709CRUZ — comparación, orientación de diseño e información de cumplimiento.
Guía de selección
Comparación con alternativas
| Parámetro | Este producto | ADG709BRUZ | ADG709CRUZ-REEL7 | ADG708BRUZ | MAX4659EUE | TS3A4751PWR |
|---|---|---|---|---|---|---|
| Brand | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Analog Devices (formerly Maxim) | Texas Instruments |
| Package | 16-pin TSSOP (RU-16) | 16-pin TSSOP (RU-16) - same | 16-pin TSSOP (RU-16) - same | 16-pin TSSOP (RU-16) - same | 16-pin TSSOP - same | 16-pin TSSOP (PW) - same |
| Function | Differential 4:1 MUX | Differential 4:1 MUX | Differential 4:1 MUX | Single-ended 8:1 MUX | Dual SPDT switch | Quad SPST switch |
Diferenciadores clave
- Tighter leakage specification than B version (frente a ADG709BRUZ)
- Differential 4:1 topology vs single-ended 8:1 (frente a ADG708BRUZ)
- Lower RON flatness than typical CMOS switches (frente a TS3A4751PWR (TI quad SPST))
- Single-supply 1.8 V to 5.5 V operation (frente a MAX4659EUE (legacy Maxim part))
Notas de diseño
Place a 100 nF ceramic decoupling capacitor as close as possible to the VDD pin (pin 3) and GND (pin 4) of the ADG709CRUZ, with a 10 µF bulk tantalum or ceramic on the same supply rail within 25 mm. The supply range of 1.8 V to 5.5 V allows operation from a single 3.3 V or 5 V rail. For dual-supply operation at ±2.5 V, decouple both VDD and VSS with the same capacitor network to prevent channel-to-channel offset errors caused by supply noise coupling into the analog path.
Estimated: at 10 MHz analog input frequency, the channel capacitance of the ADG709CRUZ (per ADG708/ADG709 datasheet typical curves) introduces approximately 30-50 ns of RC delay into the analog path. For high-frequency or wide-bandwidth signals (above 1 MHz), keep analog traces short (< 25 mm) and use a ground plane directly under the MUX to minimize parasitic capacitance. Add a series source resistor (50-100 Ω) to isolate the channel capacitance from the upstream op-amp if ringing is observed on the analog output.
Do not drive analog inputs beyond the supply rails (VDD to GND) on the ADG709CRUZ; out-of-range signals cause latch-up and permanent damage. For bidirectional signal paths (signals that can exceed either rail), add external clamping diodes or series current-limiting resistors. The EN pin must be driven to a valid logic level - leaving it floating may cause unpredictable channel selection. When using break-before-make sequencing, ensure all address transitions settle within one ADC conversion clock period to avoid sampling a transient mid-transition state.
The ADG709CRUZ in TSSOP-16 has a typical thermal resistance of approximately 150 °C/W (junction to ambient, per JEDEC JESD51-2 2S2P test board). At maximum operating temperature of 125 °C, the device can dissipate approximately 0.7 W safely. Power dissipation is dominated by supply current times supply voltage, plus dynamic switching losses proportional to load capacitance and switching frequency. For high-speed switching above 1 MHz into capacitive loads, calculate dynamic power: P_dynamic = C × VDD² × f, and ensure total dissipation stays below the thermal limit.
Información de cumplimiento
RoHS compliant per distributor listings. AEC-Q100 qualified per ADG709 datasheet family automotive designation. Lead-free (Pb-free) per package marking. Halogen-free status not explicitly stated in datasheet - set to unknown.
