Shenzhen Mingjiada Electronics Co., Ltd. supplies the TI DAC904E high-speed 14-bit 165 MSPS digital-to-analogue converter, suitable for applications in communications transmitters, medical ultrasound and high-speed instrumentation.
I. DAC904E Product Details
1. DAC904E Product Description
The DAC904E is a 14-bit high-speed digital-to-analogue converter (DAC) that utilises a segmented current-source architecture and current steering technology. It is specifically optimised for applications such as transmitter signal chains in communication systems, high-speed waveform synthesis and precision instrumentation. The device comprises an array of precisely matched segmented current sources; in conjunction with the internal decoder circuitry, these switch the corresponding current to the output during each update clock cycle, thereby enabling the reconstruction of analogue signals with low glitch levels and a high spurious-free dynamic range (SFDR).
The DAC904E provides a high-impedance current output (approximately 200 kΩ), with a nominal full-scale output current range of 20 mA and a maximum compliant output voltage of 1.25 V. The full-scale output range can be flexibly adjusted via an external resistor, and the device supports a multiplying operating mode. The device incorporates a selectable voltage reference; users may also opt for an external high-precision reference source according to system accuracy requirements to meet different levels of DC accuracy and temperature drift specifications.
2. Key Specifications of the DAC904E
It features 14-bit resolution and a single-channel parallel CMOS data interface. The output update rate ranges from 165 MSPS to 200 MSPS under a supply voltage of 4.5 V to 5.5 V, and from 125 MSPS to 165 MSPS under a low-voltage supply of 2.7 V to 3.3 V. The core architecture is current-source based, with a full-scale output current of up to 20 mA. In terms of static accuracy, the device exhibits excellent differential non-linearity (DNL) and integral non-linearity (INL) performance at 25°C. Regarding dynamic performance, when the output frequency is 20 MHz and the sampling rate is 100 MSPS, the SFDR can reach over 64 dBc; under typical operating conditions, the SFDR is approximately 79 dB, with glitch pulses as low as 3 pV·s.
In terms of power consumption, typical power consumption is 170 mW under a +5 V supply, and the device supports both single-supply modes of +5 V and +3 V. The operating temperature range is –40 °C to +85 °C, meeting industrial-grade temperature specifications. The device is housed in a TSSOP-28 surface-mount package with NiPdAu-plated leads. It complies with RoHS and REACH environmental requirements and has an MSL rating of Level 2 (capable of being stored for one year under 260°C reflow soldering conditions).
3. DAC904E Product Features
Firstly, high SFDR dynamic performance. The advanced segmented current-source architecture is optimised for both single-tone and multi-tone signals, ensuring excellent spectral purity is maintained during the reconstruction of multi-carrier signals in communication transmit chains, whilst reducing adjacent-channel interference.
Secondly, low glitch energy and fast settling time. The low glitch energy of 3 pV·s significantly reduces transient spikes during code switching, which is particularly critical for suppressing out-of-band spurious emissions in arbitrary waveform generator and DDS output chains.
Third, low-power design. The typical power consumption of 170 mW is among the lowest in its class of 14-bit high-speed DACs, helping to reduce thermal management and power supply demands in portable test equipment and distributed communication nodes.
Fourthly, flexible output configuration. Support for adjustable full-scale current, internal/external reference switching and multiplication operating modes enables engineers to flexibly match the output amplitude to the requirements of subsequent transimpedance amplifiers (TIAs) or RF balanced driver stages.
Fifth, single-supply wide-voltage operation. Compatibility with both +3.3V and +5V logic and power supply environments facilitates direct interfacing with the CMOS parallel data buses of FPGAs and ASICs, simplifying the design of the system power tree.
4. Typical Applications of the DAC904E
Designed for communications transmitter channel applications, it is suitable for intermediate frequency (IF) up-conversion links in wireless local loop (WLL) and cellular base station transmitters, as well as signal generator units in digital microwave backhaul links. It is also suitable for uplink signal output stages in cable modems and broadband access equipment.
In the fields of waveform generation and direct digital synthesis (DDS), the DAC904E can be used for D/A reconstruction in the final stage of arbitrary waveform generators (ARBs), function signal sources and coherent radar excitation sources.
In medical electronics, this device is widely used in the transmit beamforming channels of ultrasound imaging systems, providing high-precision, low-distortion pulse excitation waveforms for phased-array probes.
In the industrial and high-speed instrumentation sectors, it can be used for precision waveform output in automated test equipment (ATE), analogue setpoint channels in high-speed closed-loop control systems, and video and digital television test signal generators. It is suitable for high-speed analogue excitation requirements in test and measurement scenarios involving high-reliability industrial automation equipment and AI computing servers.
II. DAC904E Procurement, Selection and Buyer’s Guide
During the selection phase, buyers should first confirm the system’s target update rate and power supply voltage range. If the system utilises a +5V analogue power supply, the DAC904E can operate at rates up to 200 MSPS; for a +3.3V single-supply system, the target update rate must be limited to 165 MSPS or below to ensure that dynamic performance specifications are not compromised.
Secondly, the output interface matching must be assessed. As the DAC904E is a current-output DAC, a 50Ω or 75Ω load resistor is typically required in the subsequent stage to perform current-to-voltage conversion; the choice between single-ended or differential (transformer/balun) output topologies depends on application requirements. For communication RF links, differential transformer coupling is recommended to achieve better common-mode rejection and SFDR performance; whereas instrumentation and ultrasonic excitation applications may directly utilise a single-ended transimpedance amplifier architecture.
Regarding the selection of a reference source, if the system has stringent requirements for gain accuracy and temperature drift, it is recommended to use an external TI REF50 series or LMV fundamental reference to replace the on-chip reference; for cost-sensitive consumer or general industrial applications, using the internal reference directly can simplify the BOM.
With regard to packaging and compatibility, the DAC904E is housed in a TSSOP-28 package; during design, attention should be paid to the separation of analogue and digital ground planes, the control of output trace impedance, and the proximity of power decoupling capacitors. TI provides the DAC904EVM evaluation module, which can be directly connected to the TSW1400EVM high-speed data acquisition card, helping buyers to rapidly verify dynamic performance during the prototyping stage.
In terms of alternatives and cross-selection, the DAC902E within the same series is a 12-bit version and can serve as a cost-optimised option where lower precision is required; if the system requires a higher number of channels or an LVDS interface, evaluation and migration to newer product lines such as the DAC8568 and DAC8760 and other newer product lines; however, the DAC904E remains unrivalled in terms of supply stability for parallel CMOS interfaces, TSSOP-28 packaging and legacy system maintenance scenarios.
III. Mingjiada Electronics’ Supply Quality and Delivery Assurance
Shenzhen Mingjiada Electronics Co., Ltd., as a specialist independent distributor of electronic components, has long supplied electronic components, with the DAC904E being one of its standard stock items. Relying on its long-established authorised channels with original manufacturers and global supply chain resources, the company can provide customers with brand-new, original, factory-sealed DAC904E devices; all shipped products are accompanied by original manufacturer quality labels and traceable batch records.
In terms of quality control, Mingjiada Electronics has established a rigorous incoming inspection process. Each batch of DAC904E undergoes visual re-inspection, pin coplanarity testing and solderability verification; critical batches are subject to X-ray scanning and random electrical performance testing to ensure that the devices have not been affected by static electricity, moisture or mechanical damage during transport and storage. The company maintains MSL (Moisture Sensitivity Level) storage cabinets and strictly adheres to the exposure time control requirements for Level-2 moisture-sensitive devices in the workshop.
In terms of delivery capability, to meet the mass production needs of customers in the telecommunications equipment, medical ultrasound and industrial instrumentation sectors, Mingjiada Electronics offers a variety of cooperation models, including same-day dispatch of stock items, sample delivery within 48 hours for small batches, and long-term agreements (LTAs) with fixed prices and guaranteed supply. For urgent procurement requirements during the engineering prototype phase, the company utilises SF Express’s express delivery service and global stock mobilisation channels to help customers shorten their R&D cycles.
In addition to its supply operations, Mingjiada Electronics also offers idle stock buyback services for TI-series chips and analogue/mixed-signal devices to electronics manufacturers, solution providers and end-equipment manufacturers, helping customers liquidate obsolete stock and optimise their asset structures. By operating both supply and buy-back services in parallel, Mingjiada Electronics has established a comprehensive, closed-loop service capability in the field of TI high-speed DACs, data converters and signal chain components—ranging from inventory matching and spot delivery to the disposal of obsolete stock—enabling it to serve as a long-term supply chain partner for customers in the communications, medical, industrial automation and AI test and measurement sectors.
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