The DAC1220 is a 20-bit digital-to-analog (D/A) converter offering 20-bit monotonic performance over the specified temperature range

DAC1220

Manufacturer Part NumberDAC1220
DescriptionThe DAC1220 is a 20-bit digital-to-analog (D/A) converter offering 20-bit monotonic performance over the specified temperature range
ManufacturerTexas Instruments
DAC1220 datasheet
 


Specifications of DAC1220

Resolution(bits)20Dac: Channels1
InterfaceSerial SPIOutput TypeVoltage
Output Range Max.(v Or Ma)5.5Settling Time(µs)10000
Reference: TypeExtPower Consumption(typ)(mw)2.5
Dnl(max)(+/-lsb)1Inl(max)(+/-lsb)1
Pin/package16SSOP/QSOP  
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ELECTRICAL CHARACTERISTICS
All specifications at T
to T
, AV
= DV
MIN
MAX
DD
PARAMETER
ACCURACY
Monotonicity
Monotonicity
Linearity error
(2)
Unipolar offset error and gain error
(3)
Unipolar offset error drift
(2)
Bipolar zero offset error
(3)
Bipolar zero offset drift
(2)
Gain error
(3)
Gain error drift
Power-supply rejection ratio (PSRR)
ANALOG OUTPUT
(4)
Output voltage
Output current
Capacitive load
Short-circuit current
Short-circuit duration
DYNAMIC PERFORMANCE
(5)
Settling time
Output noise voltage
REFERENCE INPUT
Input voltage
Input impedance
DIGITAL INPUT/OUTPUT
Logic family
Logic levels (all except X
)
IN
V
IH
V
IL
V
OH
V
OL
Input-leakage current
X
frequency range (f
)
IN
XIN
Data format
POWER-SUPPLY REQUIREMENTS
Power-supply voltage
Supply current
Analog current
Digital current
Analog current
(1) Valid from AGND + 20mV to AV
– 20mV.
DD
(2) Applies after calibration.
(3) Recalibration can remove these errors.
(4) Ideal output voltage; does not take into account gain and offset error.
(5) Valid from AGND + 20mV to AV
– 20mV. Outside of this range, settling time can be twice the value indicated.
DD
For 16-bit mode, C
= 2.2nF, C
= 0.22nF; for 20-bit mode, C
1
2
Copyright © 1998–2009, Texas Instruments Incorporated
SBAS082G – FEBRUARY 1998 – REVISED SEPTEMBER 2009
= +5V, f
= 2.5MHz, V
= +2.5V, and 16-bit mode, unless otherwise noted.
DD
XIN
REF
CONDITIONS
20-bit mode
V
= V
OUT
REF
at DC, dB = –20log(ΔV
/ΔV
)
OUT
DD
GND or V
DD
To ±0.012%
20-bit mode, to ±0.003%
0.1Hz to 10Hz
2.0
–0.3
I
= –0.8mA
3.6
OH
I
= 1.6mA
OL
0.5
Offset binary two's complement
User-programmable
4.75
20-bit mode
= 10nF, C
= 3.3nF.
1
2
Product Folder Link(s):
DAC1220
DAC1220
DAC1220E
MIN
TYP
MAX
UNIT
16
Bits
20
Bits
(1)
±15
ppm of FSR
±60
ppm of FSR
1
ppm/°C
±15
ppm of FSR
1
ppm/°C
±150
ppm of FSR
2
ppm/°C
60
dB
0
2 × V
V
REF
0.5
mA
500
pF
±20
mA
Indefinite
1.8
2
ms
15
ms
1
μV
RMS
2.25
2.5
2.75
V
100
kΩ
TTL-compatible CMOS
DV
+ 0.3
V
DD
0.8
V
V
0.4
V
±10
μA
2.5
MHz
or straight binary
5.25
V
360
μA
μA
140
μA
460
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