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PDF DAC108S085 Data sheet ( Hoja de datos )
| Número de pieza | DAC108S085 | |
| Descripción | 10-Bit Micro Power OCTAL Digital-to-Analog Converter | |
| Fabricantes | National Semiconductor | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de DAC108S085 (archivo pdf) en la parte inferior de esta página. Total 24 Páginas | ||
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www.DataSheet4U.com
October 2007
DAC108S085
10-Bit Micro Power OCTAL Digital-to-Analog Converter
with Rail-to-Rail Outputs
General Description
The DAC108S085 is a full-featured, general purpose OCTAL
10-bit voltage-output digital-to-analog converter (DAC) that
can operate from a single +2.7V to +5.5V supply and con-
sumes 1.95 mW at 3V and 4.85 mW at 5V. The DAC108S085
is packaged in a 16-lead LLP package and a 16-lead TSSOP
package. The LLP package makes the DAC108S085 the
smallest OCTAL DAC in its class. The on-chip output ampli-
fiers allow rail-to-rail output swing and the three wire serial
interface operates at clock rates up to 40 MHz over the entire
supply voltage range. Competitive devices are limited to 25
MHz clock rates at supply voltages in the 2.7V to 3.6V range.
The serial interface is compatible with standard SPI™, QSPI,
MICROWIRE and DSP interfaces. The DAC108S085 also of-
fers daisy chain operation where an unlimited number of
DAC108S085s can be updated simultaneously using a single
serial interface.
There are two references for the DAC108S085. One refer-
ence input serves channels A through D while the other
reference serves channels E through H. Each reference can
be set independently between 0.5V and VA, providing the
widest possible output dynamic range. The DAC108S085 has
a 16-bit input shift register that controls the mode of operation,
the power-down condition, and the DAC channels' register/
output value. All eight DAC outputs can be updated simulta-
neously or individually.
A power-on reset circuit ensures that the DAC outputs power
up to zero volts and remain there until there is a valid write to
the device. The power-down feature of the DAC108S085 al-
lows each DAC to be independently powered with three dif-
ferent termination options. With all the DAC channels
powered down, power consumption reduces to less than 0.3
µW at 3V and less than 1 µW at 5V. The low power consump-
tion and small packages of the DAC108S085 make it an
excellent choice for use in battery operated equipment.
The DAC108S085 is one of a family of pin compatible DACs,
including the 8-bit DAC088S085 and the 12-bit DAC128S085.
All three parts are offered with the same pinout, allowing sys-
tem designers to select a resolution appropriate for their
application without redesigning their printed circuit board. The
DAC108S085 operates over the extended industrial temper-
ature range of −40°C to +125°C.
Features
■ Guaranteed Monotonicity
■ Low Power Operation
■ Rail-to-Rail Voltage Output
■ Daisy Chain Capability
■ Power-on Reset to 0V
■ Simultaneous Output Updating
■ Individual Channel Power Down Capability
■ Wide power supply range (+2.7V to +5.5V)
■ Dual Reference Voltages with range of 0.5V to VA
■ Operating Temperature Range of −40°C to +125°C
■ Industry's Smallest Package
Key Specifications
■ Resolution
■ INL
■ DNL
■ Settling Time
■ Zero Code Error
■ Full-Scale Error
■ Supply Power
■ — Normal
— Power Down
10 bits
±2 LSB (max)
+0.35 / −0.2 LSB (max)
6 µs (max)
+15 mV (max)
−0.75 %FSR (max)
1.95 mW (3V) / 4.85 mW (5V) typ
0.3 µW (3V) / 1 µW (5V) typ
Applications
■ Battery-Powered Instruments
■ Digital Gain and Offset Adjustment
■ Programmable Voltage & Current Sources
■ Programmable Attenuators
■ Voltage Reference for ADCs
■ Sensor Supply Voltage
■ Range Detectors
Ordering Information
Order Numbers
DAC108S085CISQ
DAC108S085CISQX
DAC108S085CIMT
DAC108S085CIMTX
DAC108S085EB
SPI™ is a trademark of Motorola, Inc.
Temperature Range
−40°C ≤ TA ≤ +125°C
−40°C ≤ TA ≤ +125°C
−40°C ≤ TA ≤ +125°C
−40°C ≤ TA ≤ +125°C
© 2007 National Semiconductor Corporation 300312
Package
16-Lead LLP
LLP Tape-and-Reel
16-Lead TSSOP
TSSOP Tape-and-Reel
Evaluation Board - BOTH
Top Mark
X80C
X80C
www.national.com
1 page  
wSwywm.bDoal taSheet4U.coPmarameter
Conditions
VA = 3V, VOUT = 3V,
IOS
Output Short Circuit Current (sink) Input Code = 000h
(Note 10)
VA = 5V, VOUT = 5V,
Input Code = 000h
IO
Continuous Output Current per
channel (Note 9)
CL Maximum Load Capacitance
ZOUT DC Output Impedance
REFERENCE INPUT CHARACTERISTICS
TA = 105°C
TA = 125°C
RL = ∞
RL = 2kΩ
Input Range Minimum
VREF1,2 Input Range Maximum
Input Impedance
LOGIC INPUT CHARACTERISTICS
IIN Input Current (Note 9)
VIL Input Low Voltage
VIH Input High Voltage
CIN Input Capacitance (Note 9)
POWER REQUIREMENTS
VA = 2.7V to 3.6V
VA = 4.5V to 5.5V
VA = 2.7V to 3.6V
VA = 4.5V to 5.5V
Supply Voltage Minimum
VA Supply Voltage Maximum
Normal Supply Current for supply fSCLK = 30 MHz,
pin VA
output unloaded
IN
Normal Supply Current for VREF1 or fSCLK = 30 MHz,
VREF2
output unloaded
VA = 2.7V
to 3.6V
VA = 4.5V
to 5.5V
VA = 2.7V
to 3.6V
VA = 4.5V
to 5.5V
Static Supply Current for supply pin fSCLK = 0,
VA output unloaded
IST
Static Supply Current for VREF1 or fSCLK = 0,
VREF2
output unloaded
VA = 2.7V
to 3.6V
VA = 4.5V
to 5.5V
VA = 2.7V
to 3.6V
VA = 4.5V
to 5.5V
fSCLK = 30 MHz, SYNC =
VA = 2.7V
to 3.6V
Total Power Down Supply Current
VA and DIN = 0V after PD
mode loaded
VA = 4.5V
to 5.5V
IPD for all PD Modes
(Note 9)
fSCLK = 0, SYNC = VA and
VA = 2.7V
to 3.6V
DIN = 0V after PD mode
loaded
VA = 4.5V
to 5.5V
Typical
50
Limits
(Note 8)
Units
(Limits)
mA
70
1500
1500
8
mA
10 mA (max)
6.5 mA (max)
pF
pF
Ω
0.5 2.7 V (min)
VA V (max)
30 kΩ
±1 µA (max)
1.0 0.6 V (max)
1.1 0.8 V (max)
1.4 2.1 V (min)
2.0 2.4 V (min)
3 pF (max)
2.7 V (min)
5.5 V (max)
460 585 µA (max)
650 855 µA (max)
95 135 µA (max)
160 225 µA (max)
370 µA
440 µA
95 µA
160 µA
0.2 1.5 µA (max)
0.5 3.0 µA (max)
0.1 1.0 µA (max)
0.2 2.0 µA (max)
5 www.national.com
5 Page 
www.DataSheet4FUu.cll-oSmcale Error vs. fSCLK
Full-Scale Error vs. Temperature
IVA vs. VA
30031233
IVA vs. Temperature
30031239
IVREF vs. VREF
30031244
IVREF vs. Temperature
30031245
30031225
11
30031235
www.national.com
11 Page | ||
| Páginas | Total 24 Páginas | |
| PDF Descargar | [ Datasheet DAC108S085.PDF ] | |
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