http://www.www.datasheet4u.com

900,000+ Datasheet PDF Search and Download

Datasheet4U offers most rated semiconductors datasheets pdf




Analog Devices Semiconductor Electronic Components Datasheet

AD1864 Datasheet

Complete Dual 18-Bit Audio DAC

No Preview Available !

AD1864 pdf
a
Complete Dual
18-Bit Audio DAC
FEATURES
Dual Serial Input, Voltage Output DACs
No External Components Required
Operates at 8 ؋ Oversampling per Channel
؎5 V to ؎12 V Operation
Cophased Outputs
115 dB Channel Separation
؎0.3% Interchannel Gain Matching
0.0017% THD+N
APPLICATIONS
Multichannel Audio Applications:
Compact Disc Players
Multivoice Keyboard Instruments
DAT Players and Recorders
Digital Mixing Consoles
Multimedia Workstations
PRODUCT DESCRIPTION
The AD1864 is a complete dual 18-bit DAC offering excellent
THD+N, while requiring no external components. Two com-
plete signal channels are included. This results in cophased
voltage or current output signals and eliminates the need for
output demultiplexing circuitry. The monolithic AD1864 chip
includes CMOS logic elements, bipolar and MOS linear
elements and laser-trimmed thin-film resistor elements, all
fabricated on Analog Devices BiMOS II process.
The DACs on the AD1864 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 provide extremely low total harmonic distortion.
This architecture minimizes errors at major code transitions
resulting in low output glitch and eliminating the need for an
external deglitcher. When used in the current output mode, the
AD1864 provides two cophased ± 1 mA output signals.
Each channel is equipped with a high performance output
amplifier. These amplifiers achieve fast settling and high slew
rate, producing ± 3 V signals at load currents up to 8 mA. Each
output amplifier is short-circuit protected and can withstand
indefinite short circuits to ground.
The AD1864 was designed to balance two sets of opposing
requirements, channel separation and DAC matching. High
channel separation is the result of careful layout techniques. At
the same time, both channels of the AD1864 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.
REV. A
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.
AD1864
DIP BLOCK DIAGRAMS
–VS 1
TRIM 2
MSB 3
AD1864
REFERENCE
REFERENCE
24 +VS
23 TRIM
22 MSB
I OUT 4
AGND 5
21 I OUT
20 AGND
SJ 6
19 SJ
RF 7
VOUT 8
+VL 9
+–
18 R F
+– 17 VOUT
16 –VL
DR 10 18-BIT
LATCH
LR 11
18-BIT
D/A
18-BIT
D/A
18-BIT 15 DL
LATCH 14 LL
CLK 12
13 DGND
A versatile digital interface allows the AD1864 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
output. 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 AD1864 operates from ± 5 V to ± 12 V power supplies. The
digital supplies, VL and –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 AD1864
typically dissipates only 225 mW, with a maximum power
dissipation of 265 mW.
The AD1864 is packaged in both a 24-pin plastic DIP and a
28-pin PLCC. Operation is guaranteed over the temperature
range of –25°C to +70°C and over the voltage supply range of
± 4.75 V to ± 13.2 V.
PRODUCT HIGHLIGHTS
1. The AD1864 is a complete dual 18-bit audio DAC.
2. 108 dB signal-to-noise ratio for low noise operation.
3. THD+N is typically 0.0017%.
4. Interchannel gain and midscale matching.
5. Output voltages and currents are cophased.
6. Low glitch for improved sound quality.
7. Both channels are 100% tested at 8 × FS.
8. Low Power—only 225 mW typ, 265 mW max.
9. Five-wire Interface for individual DAC control.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 617/329-4700 World Wide Web Site: http://www.analog.com
Fax: 617/326-8703
© Analog Devices, Inc., 1997


Analog Devices Semiconductor Electronic Components Datasheet

AD1864 Datasheet

Complete Dual 18-Bit Audio DAC

No Preview Available !

AD1864 pdf
AD1864–SPECIFICATIONS (TA = +25؇C, ؎VL = ؎VS = ؎5 V, FS = 352.8 kHz, without MSB adjustment
unless otherwise noted)
Min Typ Max
RESOLUTION
DIGITAL INPUTS
VIH
VIL
IIH, VIH = +VL
IIL, VIL = 0.4 V
Clock Input Frequency
18
2.0
12.7
+VL
0.8
1.0
–10
ACCURACY
Gain Error
Interchannel Gain Matching
Midscale Error
Interchannel Midscale Matching
Gain Linearity Error (0 dB to –90 dB)
DRIFT (0°C to +70°C)
Gain Drift
Midscale Drift
TOTAL HARMONIC DISTORTION + NOISE*
0 dB, 990.5 Hz
AD1864N, P
AD1864N-J, P-J
AD1864N-K
—20 dB, 990.5 Hz AD1864N, P
AD1864N-J, P-J
AD1864N-K
—60 dB, 990.5 Hz AD1864N, P
AD1864N-J, P-J
AD1864N-K
CHANNEL SEPARATION*
0 dB, 990.5 Hz
SIGNAL-TO-NOISE RATIO*
(20 Hz to 30 kHz) N, N-J, N-K
P, P-J
D-RANGE* (WITH A-WEIGHT FILTER)
–60 dB, 990.5 Hz
AD1864N, P
AD1864N-J, P-J
AD1864N-K
OUTPUT
Voltage Output Configuration
Output Range (± 3%)
Output Impedance
Load Current
Short-Circuit Duration
Current Output Configuration
Bipolar Output Range (± 30%)
Output Impedance (± 30%)
POWER SUPPLY
+VL and +VS
–VL and –VS
+I, (+VL and +VS = +5 V)
–I, (–VL and –VS = –5 V)
POWER DISSIPATION, ± VL = ± VS = ± 5 V
TEMPERATURE RANGE
Specification
Operation
Storage
110
102
95
88
94
94
؎2.88
±8
4.75
–13.2
0
–25
–60
0.4
0.3
4
5
<2
± 25
±4
0.004
0.003
0.0017
0.010
0.010
0.010
1.0
1.0
1.0
115
108
108
100
100
100
1.0
0.8
0.006
0.004
0.0025
0.040
0.020
0.020
4.0
2.0
2.0
± 3.0 ؎3.12
0.1
Indefinite to Common
±1
1.7
5.0 13.2
–5.0 –4.75
22 25
–23 –28
225 265
+25 +70
+70
+100
WARM-UP TIME
1
NOTES
Specifications shown in boldface are tested on production units at final test without optional MSB adjustment.
*Tested in accordance with EIAJ Test Standard CP-307 with 18-bit data.
Specifications subject to change without notice.
–2–
Units
Bits
V
V
µA
µA
MHz
% of FSR
% of FSR
mV
mV
dB
ppm of FSR/°C
ppm of FSR/°C
%
%
%
%
%
%
%
%
%
dB
dB
dB
dB
dB
dB
V
mA
mA
k
V
V
mA
mA
mW
°C
°C
°C
min
REV. A


Part Number AD1864
Description Complete Dual 18-Bit Audio DAC
Maker Analog Devices
Total Page 12 Pages
PDF Download
AD1864 pdf
Download PDF File
AD1864 pdf
View for Mobile






Related Datasheet

1 AD1860 18-Bit PCM Audio DAC Analog Devices
Analog Devices
AD1860 pdf
2 AD1861 16-Bit/18-Bit/ 16 X Fs PCM Audio DACs Analog Devices
Analog Devices
AD1861 pdf
3 AD1862 Ultralow Noise 20-Bit Audio DAC Analog Devices
Analog Devices
AD1862 pdf
4 AD1864 Complete Dual 18-Bit Audio DAC Analog Devices
Analog Devices
AD1864 pdf
5 AD1865 Complete Dual 18-Bit 16 x Fs Audio DAC Analog Devices
Analog Devices
AD1865 pdf
6 AD1866 Single Supply Dual 16-Bit Audio DAC Analog Devices
Analog Devices
AD1866 pdf
7 AD1868 Single Supply Dual 18-Bit Audio DAC Analog Devices
Analog Devices
AD1868 pdf




Part Number Start With

0    1    2    3    4    5    6    7    8    9    A    B    C    D    E    F    G    H    I    J    K    L    M    N    O    P    Q    R    S    T    U    V    W    X    Y    Z

site map

webmaste! click here

contact us

Buy Components