công cụ tìm kiếm bảng dữ liệu linh kiện điện tử |
|
AD1865 bảng dữ liệu(PDF) 1 Page - Analog Devices |
|
AD1865 bảng dữ liệu(HTML) 1 Page - Analog Devices |
1 / 12 page FUNCTIONAL BLOCK DIAGRAM (DIP Package) 1 2 3 4 5 6 7 8 9 10 11 12 24 23 22 21 20 19 18 17 16 15 14 13 AD1865 +VS NC TRIM MSB SJ DL LL DGND AGND VOUT IOUT RF –VS IOUT +VL VOUT TRIM MSB LR CLK DR AGND SJ RF 18-BIT LATCH 18-BIT D/A REFERENCE 18-BIT LATCH 18-BIT D/A REFERENCE NC = NO CONNECT REV. 0 Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of Analog Devices. a Complete Dual 18-Bit 16 FS Audio DAC AD1865 One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. Tel: 617/329-4700 Fax: 617/326-8703 FEATURES Dual Serial Input, Voltage Output DACs No External Components Required 110 dB SNR 0.003% THD+N Operates at 16 Oversampling per Channel 5 Volt Operation Cophased Outputs 116 dB Channel Separation Pin Compatible with AD1864 DIP or SOIC Packaging APPLICATIONS Multichannel Audio Applications Compact Disc Players Multivoice Keyboard Instruments DAT Players and Recorders Digital Mixing Consoles Multimedia Workstations PRODUCT DESCRIPTION The AD1865 is a complete, dual 18-bit DAC offering excellent THD+N and SNR while requiring no external components. Two complete signal channels are included. This results in cophased voltage or current output signals and eliminates the need for output demultiplexing circuitry. The monolithic AD1865 chip includes CMOS logic elements, bipolar and MOS linear ele- ments and laser-trimmed thin-film resistor elements, all fabri- cated on Analog Devices’ ABCMOS process. The DACs on the AD1865 chip employ a partially segmented architecture. The first four MSBs of each DAC are segmented into 15 elements. The 14 LSBs are produced using standard R-2R techniques. Segment and R-2R resistors are laser trimmed to pro- vide extremely low total harmonic distortion. This architecture minimizes errors at major code transitions resulting in low out- put glitch and eliminating the need for an external deglitcher. When used in the current output mode, the AD1865 provides two ±1 mA output signals. Each channel is equipped with a high performance output am- plifier. These amplifiers achieve fast settling and high slew rate, producing ±3 V signals at load currents up to 8 mA. Each out- put amplifier is short-circuit protected and can withstand indefi- nite short circuits to ground. The AD1865 was designed to balance two sets of opposing re- quirements, channel separation and DAC matching. High chan- nel separation is the result of careful layout. At the same time, both channels of the AD1865 have been designed to ensure matched gain and linearity as well as tracking over time and temperature. This assures optimum performance when used in stereo and multi-DAC per channel applications. A versatile digital interface allows the AD1865 to be directly connected to standard digital filter chips. This interface employs five signals: Data Left (DL), Data Right (DR), Latch Left (LL), Latch Right (LR) and Clock (CLK). DL and DR are the serial input pins for the left and right DAC input registers. Input data bits are clocked into the input register on the rising edge of CLK. A low-going latch edge updates the respective DAC out- put. For systems using only a single latch signal, LL and LR may be connected together. For systems using only one DATA signal, DR and DL may be connected together. The AD1865 operates with ±5 V power supplies. The digital supply, VL, can be separated from the analog supplies, VS and –VS, for reduced digital feedthrough. Separate analog and digital ground pins are also provided. The AD1865 typically dissipates only 225 mW, with a maximum power dissipation of 260 mW. The AD1865 is packaged in both a 24-pin plastic DIP and a 28-pin SOIC package. Operation is guaranteed over the temper- ature range of –25 °C to +70°C and over the voltage supply range of ±4.75 V to ±5.25 V. PRODUCT HIGHLIGHTS 11. The AD1865 is a complete dual 18-bit audio DAC. 12. 110 dB signal-to-noise ratio for low noise operation. 13. THD+N is typically 0.003%. 14. Interchannel gain and midscale matching. 15. Output voltages and currents are cophased. 16. Low glitch for improved sound quality. 17. Both channels are 100% tested at 16 × F S. 18. Low Power—only 225 mW typ, 260 mW max. 19. Five-wire interface for individual DAC control. 10. 24-pin DIP or 28-pin SOIC packages available. |
Số phần tương tự - AD1865_15 |
|
Mô tả tương tự - AD1865_15 |
|
|
Link URL |
Chính sách bảo mật |
ALLDATASHEET.VN |
Cho đến nay ALLDATASHEET có giúp ích cho doanh nghiệp của bạn hay không? [ DONATE ] |
Alldatasheet là | Quảng cáo | Liên lạc với chúng tôi | Chính sách bảo mật | Trao đổi link | Tìm kiếm theo nhà sản xuất All Rights Reserved©Alldatasheet.com |
Russian : Alldatasheetru.com | Korean : Alldatasheet.co.kr | Spanish : Alldatasheet.es | French : Alldatasheet.fr | Italian : Alldatasheetit.com Portuguese : Alldatasheetpt.com | Polish : Alldatasheet.pl | Vietnamese : Alldatasheet.vn Indian : Alldatasheet.in | Mexican : Alldatasheet.com.mx | British : Alldatasheet.co.uk | New Zealand : Alldatasheet.co.nz |
Family Site : ic2ic.com |
icmetro.com |