DA C
Austin Semiconductor, Inc.
10 Bit, 40MHz
Current -Output DACs
FEATURES
•
+2.7V to +3.3V Single-Supply Operation
AS5181
PIN ASSIGNMENT
(Top View)
24-Pin Flat Pack (F)
• Wide Spurious-Free Dynamic Range: 70dB at
f
OUT
= 2.2MHz
• Fully Differential Output
• Low-Current Standby or Full Shutdown Modes
•
Internal +1.2V, Low-Noise Bandgap Reference
•
Small 24-Pin Flat-pack Package
OPTIONS
•
Package(s)
24-Pin Flat-pack
•
Operating Temperature Ranges
Extended Temperature (-55
o
C to +125
o
C)
Industrial Temperature (-40°C to +85°C)
Military Processing (-55°C to +125°C)
Space Processing (-55
o
C to +125
o
C)
MARKING
F
XT
IT
MIL
SPACE
GENERAL DESCRIPTION
The AS5181 is a 10-bit, current-output digital-to-analog
converter (DAC) designed for superior performance in signal
reconstruction or arbitrary waveform generation applications
requiring analog signal reconstruction with low distortion and
low-power operation. The AS5181 are designed for a 10pVs
glitch operation to minimize unwanted spurious signal
components at the output. An on-board 1.2V bandgap circuit
provides a well-regulated, low-noise reference that can be
disabled for external reference operation.
The devices are designed to provide a high level of signal
integrity for the least amount of power dissipation. They
operate from a single 2.7V to 3.3V supply. Additionally, these
DACs have three modes of operation: normal, low-power
standby, and full shutdown, which provides the lowest
possible power dissipation with a 1µA (max) shutdown current.
A fast wake-up time (0.5µs) from standby mode to full DAC
operation facilitates power conservation by activating the DAC
only when required.
For more products and information
please visit our web site at
www.austinsemiconductor.com
AS5181
Rev. 0.3 6/05
Austin Semiconductor, Inc. reserves the right to change products or specifications without notice.
1
DA C
Austin Semiconductor, Inc.
ABSOLUTE MAXIMUM RATINGS
*
AV
DD
, DV
DD
to AGND, DGND......................................-0.3V to +6V
Digital Inputs to DGND..................................................-0.3V to +6V
OUTP, OUTN, CREF to AGND…..................................-0.3V to +6V
V
REF
to AGND..................................................................-0.3V to +6V
AGND to DGND.............................................................-0.3V to +0.3V
AV
DD
to DV
DD
..............................................................................±3.3V
Maximum Current to Any Pin....................................................50mA
Continuous Power Dissipation (TA = +70°C)
24-Pin Flatpack (derate 9.50mW/°C above +70°C) .............762mW
Storage Temperature Range .....................................-65°C to +150°C
AS5181
Lead Temperature (soldering, 10s) .........................................+300°C
*Stresses at or greater than those listed under "Absolute
Maximum Ratings" may cause permanent damage to the
device. This is a stress rating only and functional operation of
the device at these or any other conditions above those
indicated in the operation section of this specification is not
implied. Exposure to absolute maximum rating conditions for
extended periods will affect reliability.
ELECTRICAL CHARACTERISTICS
(AV
DD
= DV
DD
= +3V ±10%, AGND =
DGND = 0, f
CLK
= 40MHz, I
FS
= 1mA, 400Ω differential output, C
L
= 5pF, T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at T
A
= +25°C.)
PARAMETER
STATIC PERFORMANCE
Resolution
Intergral Nonlinearity
Differential Nonlinearity
Zero-Scale Error
Full-Scale Error
DYNAMIC PERFORMANCE
Output Settling Time
Glitch Impulse
CONDITION
SYM
N
INL
DNL
MIN
10
-2
-1
-2
-40
TYP
MAX
UNITS
Bits
LSB
LSB
LSB
LSB
ns
pVs
Guaranteed monotonic
±0.5
±0.5
±15
25
10
72
+2
1
+2
+40
To ±0.5LSB error band
f
OUT
= 550kHz
Spurious-Free Dynamic Range
to Nyquist
f
CLK
= 40MHz
T
A
= +25°C
f
OUT
= 2.2MHz
f
OUT
= 550kHz
SFDR
57
70
dBc
-70
THD
-68
-63
dB
Total Harmonic Distortion to
Nyquist
f
CLK
= 40MHz
T
A
= +25°C
f
OUT
= 2.2MHz
f
OUT
= 550kHz
61
SNR
56
59
50
10
V
FS
400
-0.3
-1
I
FS
R
L
0.5
1
400
0.8
1
1.5
nVs
pA/Hz
mV
V
µA
mA
Ω
dB
Signal-to-Noise Ratio to
Nyquist
f
CLK
= 40MHz
T
A
= +25°C
f
OUT
= 2.2MHz
Clock and Data Feedthrough
Output Noise
ANALOG OUTPUT
Full-Scale Output Voltage
Voltage Compliance of Output
Output Leakage Current
Full-Scale Output Current
DAC External Output Resistor
Load
AS5181
Rev. 0.3 6/05
All 0s to all 1s
DACEN = 0
(continued)
Austin Semiconductor, Inc. reserves the right to change products or specifications without notice.
2
DA C
Austin Semiconductor, Inc.
AS5181
ELECTRICAL CHARACTERISTICS
(AV
DD
= DV
DD
= +3V ±10%, AGND =
DGND = 0, f
CLK
= 40MHz, I
FS
= 1mA, 400Ω differential output, C
L
= 5pF, T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at T
A
= +25°C.) (continued)
PARAMETER
REFERENCE
Output Voltage Range
Output Voltage Temperature Drift
Reference Output Drive Capability
Reference Supply Rejection
Current Gain (I
FS
/I
REF
)
CONDITION
SYM
V
REF
TCV
REF
I
REFOUT
MIN
1.12
TYP
1.2
50
10
0.5
8
AV
DD
PD = 0, DACEN = 1, digital inputs at 0 or DV
DD
I
AVDD
DV
DD
PD = 0, DACEN = 1, digital inputs at 0 or DV
DD
PD = 0, DACEN = 1, digital inputs at 0 or DV
DD
PD = 1, DACEN = X, digital inputs at 0 or DV
DD
(X = don't care)
I
DVDD
I
STANDBY
I
SHDN
V
IH
V
IL
V
IN
= 0 or DV
DD
I
IN
C
IN
t
DS
t
DH
10
0
5
5
0.5
50
t
CLK
t
CH
t
CL
25
10
10
10
2
0.8
±1
2.7
4.2
1
0.5
2.7
1.7
3.3
4.0
3.3
5.0
1.5
1
MAX
1.28
UNITS
V
ppm/°C
µA
mV/V
mA/mA
V
mA
V
mA
mA
µA
POWER REQUIREMENTS
Analog Power-Supply Voltage
Analog Supply Current
Digital Power-Supply Voltage
Digital Supply Current
Standby Current
Shutdown Current
LOGIC INPUTS AND OUTPUT
Digital Input Voltage High
Digital Input Voltage Low
Digital Input Current
Digital Input Capacitance
TIMING CHARACTERISTIC
DAC DATA to CLK Rise Setup Time
DAC CLK Rise to DATA Hold Time
CS\ Fall to CLK Rise Time
CS\ Fall to CLK Fall Time
DACEN Rise Time to V
OUT
PD Fall Time to V
OUT
Clock Period
Clock High Time
Clock Low Time
V
V
µA
pF
ns
ns
ns
ns
µs
µs
ns
ns
ns
AS5181
Rev. 0.3 6/05
Austin Semiconductor, Inc. reserves the right to change products or specifications without notice.
3
DA C
Austin Semiconductor, Inc.
AS5181
TYPICAL OPERATING CHARACTERISTICS (AV
DD
= DV
DD
= +3V, AGND
Ω
= DGND = 0, I
FS
= 1mA, 400Ω differential output, C
L
= 5pF, T
A
=
+25°C, unless otherwise noted.)
AS5181
Rev. 0.3 6/05
Austin Semiconductor, Inc. reserves the right to change products or specifications without notice.
4
DA C
Austin Semiconductor, Inc.
AS5181
TYPICAL OPERATING CHARACTERISTICS (AV
DD
= DV
DD
= +3V, AGND
= DGND = 0, I
FS
= 1mA, 400Ω differential output, C
L
= 5pF, T
A
=
Ω
+25°C, unless otherwise noted.) (continued)
AS5181
Rev. 0.3 6/05
Austin Semiconductor, Inc. reserves the right to change products or specifications without notice.
5
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