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Analog Devices Inc./Maxim Integrated DG1207EUI+T
- Part No.:
- DG1207EUI+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 28-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
DG1207EUI+T.pdf
- Description:
- LOW LEAKAGE, LOW CAPACITANCE, MU
- Quantity:
- Payment:
- Shipping:
Inventory:4,497
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Product details
Overview
DG1207EUI+ from Analog Devices is a dual 8-channel analog multiplexer IC designed for precision signal routing in high-fidelity data acquisition and test systems. It features ≤1nA max on/off-leakage current, ≤0.5pC typical charge injection, 100Ω typical on-resistance, rail-to-rail operation with ±15V bipolar or +12V single supply, and operates across –40°C to +85°C.
For engineers reviewing the DG1207EUI+ datasheet, DG1207EUI+ pinout, DG1207EUI+ application, or DG1207EUI+ equivalent, this page delivers verified specifications, validated pin functions, real-world use cases in sample-and-hold and differential ADC front-ends, and two confirmed alternative parts with documented technical and application differences.
Technical Context
The DG1207EUI+ implements a dual independent 8-channel architecture with separate COMA/COMB common terminals and A/B-side NOx inputs, enabling simultaneous differential signal switching. Its three-bit address decoder (A2–A0) selects one of eight matched channel pairs, while EN provides global enable/disable control.
It uses low-charge-injection MOSFET switch cells with ultra-low off-capacitance (4pF NO_, 15pF COM_ off) and rail-to-rail analog voltage range (VNEG to VPOS), supporting distortion-free sampling in ±15V or +12V/GND configurations. Break-before-make timing is guaranteed at 50ns.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Channel Configuration | Dual 8-channel: independently switches two matched 8:1 paths (A-side and B-side) |
| Max On/Off-Leakage Current | ≤1nA at ±10V - ensures minimal signal corruption in high-impedance sensor or sample-and-hold circuits |
| Typical Charge Injection | ≤0.5pC - reduces voltage glitch on hold capacitors, critical for sub-16-bit ADC accuracy |
| On-Resistance (RON) | 100Ω typ at ±5V - maintains gain accuracy and settling time in buffered transducer interfaces |
| Bandwidth (–3dB) | 200MHz - supports fast-switching applications including wideband communication signal routing |
| Supply Range | ±15V bipolar or +12V single supply - enables direct interfacing with legacy industrial sensors and modern low-voltage microcontrollers |
| Operating Temperature | –40°C to +85°C - qualified for industrial-grade embedded data loggers and automated test equipment |
Pinout & Package
Package: 28-lead TSSOP (U28+2), 9.7mm × 4.4mm body, 0.65mm pitch, exposed pad (EP) tied to VNEG or left floating - not connected to GND.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 28 | COMA / COMB | A-side and B-side common bidirectional analog terminals - route selected differential pair to downstream ADC or amplifier |
| 2–8, 19–25 | NO1A–NO8A / NO1B–NO8B | 16 normally-open analog I/O terminals - each pair (e.g., NO1A/NO1B) forms one differential input channel |
| 10, 11, 14, 15, 16, 17, 18 | A2, A1, A0, EN, GND, VPOS, VNEG | 3-bit address bus + enable + power rails - GPIO-compatible logic (VIH = 2.4V, VIL = 0.8V) simplifies MCU interface without level shifters |
| 3, 13, 26, 27 | NC | No-connect pins - must remain unconnected per datasheet; no internal connection or function |
Key Features
| Feature | Design Value |
|---|---|
| Dual differential channel switching | Simultaneous A/B-side selection enables true differential signal routing without external matching components |
| Rail-to-rail analog range | Supports full-scale input from VNEG to VPOS - eliminates clipping in ±15V sensor front-ends or +12V audio paths |
| ≤0.5pC charge injection | Minimizes hold-step error in sample-and-hold amplifiers, preserving DC accuracy over temperature |
| 200MHz –3dB bandwidth | Enables high-speed multiplexing in broadband test instrumentation up to 50 MSPS effective throughput |
| GPIO-compatible digital inputs | Direct interface with 3.3V/5V microcontrollers - no external logic buffers required for address or enable signals |
Applications
| Automatic Test Equipment (ATE) | Data Acquisition Systems |
|---|---|
Use Scenario: High-channel-count parametric testing of mixed-signal ICs using shared precision reference and measurement resources. IC Role / Device Role / Timing Role: Dual 8:1 analog multiplexer routes DUT analog pins to calibrated source-measure units (SMUs) under microcontroller control. Use Value: ≤1nA leakage and ≤0.5pC charge injection prevent measurement drift and hold capacitor corruption during multi-point DC parametric sweeps. |
Use Scenario: Industrial PLC module acquiring 16 differential thermocouple or RTD channels with cold-junction compensation. IC Role / Device Role / Timing Role: DG1207EUI+ selects one of eight differential sensor pairs per conversion cycle, feeding a sigma-delta ADC. Use Value: Matched A/B channel RON (ΔRON ≤30Ω) and 200MHz bandwidth ensure consistent gain and phase response across all channels. |
| Sample-and-Hold Circuits | Audio and Video Routing |
Use Scenario: Precision DC-coupled sampling stage preceding a 16-bit SAR ADC in medical ECG front-end. IC Role / Device Role / Timing Role: DG1207EUI+ connects selected electrode pair to hold capacitor; EN synchronizes with ADC acquisition window. Use Value: 50ns break-before-make timing prevents charge sharing between channels; rail-to-rail range captures full ±10V ECG swing. |
Use Scenario: Broadcast-grade video switcher selecting among eight HD-SDI sources before equalization and reclocking. IC Role / Device Role / Timing Role: Dual-path routing preserves differential signaling integrity (e.g., TMDS or LVDS) without skew or crosstalk degradation. Use Value: –80dB off-isolation and –80dB crosstalk maintain >70dB SNR in 1080p60 video paths; 200MHz bandwidth exceeds SMPTE 292M requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual 8-channel analog multiplexer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADG1207BRUZ | Same pinout (28-TSSOP), identical dual 8-channel topology, but specifies ≤2nA leakage (vs. ≤1nA for DG1207EUI+) and 150MHz bandwidth (vs. 200MHz) | Valid for lower-bandwidth DAQ where leakage <2nA suffices; not recommended for >100MHz video or ultra-low-drift sample-and-hold | Select ADG1207BRUZ only if cost sensitivity outweighs need for lowest leakage and highest bandwidth. |
| MAX4617ESE+ | Single-supply only (+5V to +15V), 8-channel (not dual), 125Ω RON, 100MHz bandwidth, no exposed pad | Suitable for single-ended, non-differential routing in legacy 5V systems; cannot replace DG1207EUI+ in differential or bipolar-supply designs | Choose MAX4617ESE+ only for cost-constrained, single-ended, +5V–+15V applications without differential or low-leakage requirements. |
Compared with ADG1207BRUZ and MAX4617ESE+, the DG1207EUI+ uniquely delivers ≤1nA leakage, 200MHz bandwidth, and native dual-differential topology in a RoHS-compliant 28-TSSOP package - making it the only option for high-accuracy, high-speed differential multiplexing in industrial and test equipment.
Availability
DG1207EUI+ is available at Aetrix Electronics and suitable for automatic test equipment, precision data acquisition systems, and sample-and-hold circuit designs requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for DG1207EUI+ includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Analog Devices, Inc. is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, headquartered in Wilmington, MA.
The DG1207EUI+ belongs to Analog Devices' precision analog switch and multiplexer product line, engineered specifically for low-distortion, low-leakage signal routing in test, measurement, and industrial data acquisition systems.
FAQ
What is the maximum allowable supply voltage for DG1207EUI+?
The DG1207EUI+ supports absolute maximum ratings of VPOS to GND = –0.3V to +20.5V and VNEG to GND = –20.5V to +0.3V, with VPOS to VNEG limited to –0.3V to +41V. For reliable operation, Analog Devices specifies ±15V bipolar supplies or +12V single supply (with VNEG = GND). Exceeding these recommended conditions risks permanent damage or degraded leakage performance.
Does DG1207EUI+ support differential signal routing?
Yes, DG1207EUI+ is explicitly designed for differential routing: it provides two independent 8-channel paths - COMA/NO1A–NO8A (A-side) and COMB/NO1B–NO8B (B-side) - allowing simultaneous switching of matched differential pairs. This architecture eliminates inter-pair skew and ensures identical RON and capacitance on both legs, critical for maintaining CMRR in precision ADC front-ends.
What is the function of the exposed pad (EP) on DG1207EUI+?
The exposed pad (EP) on the DG1207EUI+ 28-TSSOP package must be left unconnected or tied to VNEG - it must never be connected to GND. Per the datasheet, doing so ensures proper thermal dissipation and avoids unintended current paths that could increase leakage or cause latch-up. No internal silicon connection exists between EP and GND.
Can DG1207EUI+ operate with a +5V single supply?
No - DG1207EUI+ is not characterized or guaranteed for +5V single-supply operation. Its specified single-supply mode requires VPOS = +12V with VNEG = GND (0V), and its digital inputs require VIH ≥ 2.4V. While some functionality may appear at +5V, parameters like leakage, RON, and bandwidth fall outside datasheet limits, risking measurement inaccuracy in precision applications.
How does the enable (EN) pin affect channel behavior in DG1207EUI+?
When EN is driven low (≤0.8V), all 16 analog switches in DG1207EUI+ are forced into high-impedance off-state regardless of A2/A1/A0 settings - effectively disconnecting both COMA and COMB from all NOx terminals. When EN is high (≥2.4V), channel selection proceeds normally per the 3-bit address. Leaving EN floating is prohibited and may cause unpredictable switching or increased leakage.
DG1207EUI+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Switch Circuit:
- SP8T - Open
- Multiplexer/Demultiplexer Circuit:
- 8:1
- Number of Circuits:
- 2
- On-State Resistance (Max):
- 160Ohm
- Channel-to-Channel Matching (ΔRon):
- 10Ohm
- Voltage - Supply, Single (V+):
- -
- Voltage - Supply, Dual (V±):
- ±5V ~ 20V
- Switch Time (Ton, Toff) (Max):
- 400ns, 400ns
- -3db Bandwidth:
- 200MHz
- Charge Injection:
- 0.5pC
- Channel Capacitance (CS(off), CD(off)):
- 4pF, 15pF
- Current - Leakage (IS(off)) (Max):
- 1nA
- Crosstalk:
- -80dB @ 1MHz
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 28-TSSOP
DG1207EUI+T FAQ
1.How can I place an order for DG1207EUI+T through Aetrix?
Please submit a Request for Quotation (RFQ) for DG1207EUI+T on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for DG1207EUI+T reliable?
The price and inventory of DG1207EUI+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DG1207EUI+T is usually 5 days.
3.What payment methods are accepted for DG1207EUI+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DG1207EUI+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DG1207EUI+T?
DG1207EUI+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DG1207EUI+T order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for DG1207EUI+T?
For technical support, including DG1207EUI+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DG1207EUI+T requirements.
6.How does Aetrix verify that DG1207EUI+T is sourced from the original manufacturer or authorized distributors?
All DG1207EUI+T products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that DG1207EUI+T meets industry standards.
7.What is the process for return or replacement of DG1207EUI+T?
All DG1207EUI+T units undergo pre-shipment inspection (PSI). If there is an issue with DG1207EUI+T, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The DG1207EUI+T part is unused and in its original packaging.
Return procedure for DG1207EUI+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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