Overview
The AD1851RZ-J, produced by Analog Devices Inc., is a 16-bit monolithic PCM (Pulse Code Modulation) audio digital-to-analog converter (DAC). This device is part of the AD1851/AD1861 family, where the AD1851 is a 16-bit DAC and the AD1861 is an 18-bit DAC. The AD1851RZ-J provides a voltage output amplifier, a DAC, a serial-to-parallel register, and a voltage reference, making it suitable for high-performance audio playback applications.
The device is fabricated using a combination of CMOS logic elements, bipolar devices, MOS devices, and thin-film resistors, which ensures low total harmonic distortion and high signal-to-noise ratio. The AD1851RZ-J operates with ±5 V power supplies and is available in a 16-pin plastic SOIC package, making it pin-compatible with the AD1856 and AD1860 PCM audio DACs.
Key Specifications
| Parameter | Min | Typ | Max | Units |
|---|---|---|---|---|
| Resolution | 16 | - | - | Bits |
| Total Harmonic Distortion + Noise (0 dB, 990.5 Hz) | 0.003 | 0.004 | - | % |
| Signal-to-Noise Ratio | 107 | - | 110 | dB |
| Maximum Clock Input Frequency | - | - | 12.5 | MHz |
| Differential Linearity Error | ±0.001 | - | - | % of FSR |
| Output Voltage Range | ±2.88 | ±3.0 | ±3.12 | V |
| Output Current Range | ±8 | - | - | mA |
| Power Supply Voltage | ±4.75 | ±5.0 | ±5.25 | V |
| Power Dissipation | - | 100 | - | mW |
| Operating Temperature Range | -25 | - | 70 | °C |
Key Features
- High Performance Audio Playback: The AD1851RZ-J offers high signal-to-noise ratio (up to 110 dB) and low total harmonic distortion, ensuring high-quality audio output.
- Fast Settling Time: The device has a fast settling time of 1.5 µs, allowing for 2x, 4x, 8x, and 16x oversampling rates.
- Optional Trim for Super-Linear Performance: An optional trim pin allows for the elimination of residual differential linearity error at midscale, enhancing low distortion reproduction of low amplitude signals.
- ±5 V Operation: The device operates with ±5 V power supplies, making it suitable for various applications.
- Space-Saving Packages: Available in 16-pin plastic SOIC and DIP packages, which are pin-compatible with AD1856 and AD1860 PCM audio DACs.
- Separate Analog and Digital Grounds: Separate ground pins for analog and digital sections help reduce digital crosstalk.
- Short Circuit Protection: The output amplifier is short circuit protected and can withstand indefinite shorts to ground.
Applications
- High-End Compact Disc Players: Ideal for applications requiring high-quality audio playback.
- Digital Audio Amplifiers: Suitable for use in digital audio amplifiers due to its high performance and low distortion.
- DAT Recorders and Players: Used in digital audio tape recorders and players for precise audio conversion.
- Synthesizers and Keyboards: Applicable in musical instruments that require high-quality digital-to-analog conversion.
Q & A
- What is the resolution of the AD1851RZ-J?
The AD1851RZ-J has a resolution of 16 bits.
- What is the maximum clock input frequency for the AD1851RZ-J?
The maximum clock input frequency is 12.5 MHz.
- What is the signal-to-noise ratio (SNR) of the AD1851RZ-J?
The SNR is up to 110 dB.
- What are the power supply requirements for the AD1851RZ-J?
The device operates with ±5 V power supplies.
- What is the typical power dissipation of the AD1851RZ-J?
The typical power dissipation is 100 mW.
- Is the AD1851RZ-J pin-compatible with other Analog Devices DACs?
Yes, it is pin-compatible with the AD1856 and AD1860 PCM audio DACs.
- What is the operating temperature range for the AD1851RZ-J?
The operating temperature range is from -25°C to +70°C.
- Does the AD1851RZ-J have short circuit protection?
Yes, the output amplifier is short circuit protected and can withstand indefinite shorts to ground.
- What is the output voltage range of the AD1851RZ-J?
The output voltage range is ±3 V.
- Can the AD1851RZ-J be used in current output mode?
Yes, it can provide a ±1 mA output signal in current output mode.
