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AA88368AP Schematic ( PDF Datasheet ) - Agamem Microelectronic

Teilenummer AA88368AP
Beschreibung 10-BIT DAC
Hersteller Agamem Microelectronic
Logo Agamem Microelectronic Logo 




Gesamt 15 Seiten
AA88368AP Datasheet, Funktion
www.DataSheet4U.com
AA88368APAgamem Mircoelectronics Inc.
PRELIMINARY
10-BIT DAC
„ FEATURES
z 14 bits serial data input (3 wire serial data transfer method, DI, CLK, LD)
z R-2R resistor ladder used for D/A conversion
z 10 channels with 10 bits resolution monotonic D/A converter
z 10channel buffer operational amplifiers operating in the full voltage range
from VCC to GND
z Max. +/- 3.5 LSBs Integral Non-Linearity
z Max +/- 1 LSB Differential Non-Linearity
z Max. 10 MHz Serial data input
z Serial I/O for cascade application
z Max. 2.0 mA analog output drive/sink current
z Two separate power supply/ground lines for system and analog power
supply
z Single +5 V system power supply
z Silicon-gate CMOS process
„ DESCRIPTION
The AA88368AP is an 10-bit resolution digital to analog converter (DAC),
designed for interface with 10 bits micro-controller. The AA88368AP has 10 channels
with operational amplifier output buffers. Digital data are input serially in max.
10MHz by individual channel units. The latched digital data are converted into analog
DC voltages by the D/A converter in 20 s settling time. AA88368AP is a single 5V
power DAC. Output could be full swing as the analog power is equal to the system
power.
The AA88368AP has 10 operational amplifier output buffers for each one of 10
channels. These operational amplifier output buffers are used to provide high current
drive/sink capability. The AA88368AP is suitable for electronic volumes and
replacement for potentiometers for adjustment, in addition to normal D/A converter
applications.
AA88368AP is a 20 pins SSOP package. Its operation temperature range is
specified over -10 to 75 . Figure 2 shows its pin assignment.
1 2006/7/5






AA88368AP Datasheet, Funktion
www.DataSheet4U.com
AA88368APAgamem Mircoelectronics Inc.
PRELIMINARY
10-BIT DAC
AA88368
AA88368
AA88368
* : Analog power (VDD, VSS) can be different each other depend on application consideration
6 2006/7/5

6 Page









AA88368AP pdf, datenblatt
www.DataSheet4U.com
AA88368APAgamem Mircoelectronics Inc.
PRELIMINARY
10-BIT DAC
„ ANALOG CHARACTERISTICS
(unless otherwise noted, VCC=5V, VrefH=5V, VrefL=0V, Ta=25 )
Parameter
Symbol Min Typ Max Unit
Conditions
Consumption current
IrefH
VrefH=5V, VrefL=0V Data
- 4.5 7.5 mA
condition maximun current
D/A converter
Upper reference voltage
VrefH 3 - 5
Reference voltage can not always
V
be set to any value in this range,
D/A converter
Lower reference voltage
VrefL 0
because it is restricted the buffer
- 1.5 V
amplifier output voltage range
Buffer amplifier
Output voltage range
0.1 - 4.9 V Io = + / - 100uA
Vo
0.2 - 4.75 V Io = +/- 1ma
Buffer amplifier
Output drive range
Upper satuation voltage = 0.35V
Io -2 - 2 mA
Lower satuation voltage = 0.23V
Differential
SDL -1 - 1
non-linearity error
LSB VrefH=4.796V,
VerfL=0.7V,
Accuracy Non-linearity error SL -3.5 - 3.5
Vcc=5.5V (2mV/LSB) Without
Zero code error
Full scale error
SZERO -25 - 25
load (Io=0mA)
mV
SFULL -25 - 25
Buffer amplifier
Output impedance
RO - 5 15 Ohm
Pull-up I/O internal R value
Vin: 0V resistance value alters by
RUP 12.5 25 37.5 Kohm
the applied voltage
NOTES:
Integral Non-Linearity : The difference between the digital data converted output values and a
reference straight line drawn through the first and the last output values
Differential Non-Linearity : The difference from the ideal increment value when the digital data is
increased by 1 bit.
12 2006/7/5

12 Page





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