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参数资料
| 型号： | DAC1221E |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | DAC |
| 英文描述： | SERIAL INPUT LOADING, 1800 us SETTLING TIME, 16-BIT DAC, PDSO16 |
| 封装： | SSOP-16 |
| 文件页数： | 9/16页 |
| 文件大小： | 154K |
| 代理商： | DAC1221E |
2
DAC1221
SPECIFICATIONS
All specifications TMIN to TMAX, AVDD = DVDD = +3V, fXIN = 2.5MHz, VREF = +1.25V, C1 = 2.2nF, C2 = 150pF, C3 = 6.8nF, unless otherwise noted.
DAC1221E
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
ACCURACY
Monotonicity
16
Bits
Linearity Error(1)
±30
ppm of FSR
Offset Error(2)
VOUT = 20mV, CALPIN = 1(6)
±190
V
Offset Error Drift(3)
50
V/°C
Midscale Error(2)
VOUT = VREF, CALPIN = 1(6)
±20
V
Midscale Error Drift(3)
50
V/°C
Gain Error(2)
CALPIN = 1(6)
0.015
%
Gain Error Drift(3)
3
ppm/
°C
Power-Supply Rejection Ratio
at DC, dB = –20log(
V
OUT/VDD)57
dB
ANALOG OUTPUT
Output Voltage(4)
0
2 VREF
V
Output Current(1)
±0.25
mA
Capacitive Load
500
pF
Short-Circuit Current
±10
mA
Short-Circuit Duration
GND or VDD
Indefinite
DYNAMIC PERFORMANCE
Settling Time(1,5)
To
±0.012%
1.8
2
ms
Output-Noise Voltage
1Hz to 2kHz
45
Vrms
REFERENCE INPUT
Input Voltage
1.125
1.25
1.375
V
Input Impedance
1M
DIGITAL INPUT/OUTPUT
Logic Family
TTL-Compatible CMOS
Logic Levels (all except XIN)
VIH
2.0
DVDD + 0.3
V
VIL
–0.3
0.8
V
VOH
IOH = –0.8mA
2.4
V
VOL
IOL = 1.6mA
0.4
V
Input-Leakage Current
±10
A
XIN Frequency Range (fXIN)
1.0
2.5
MHz
Data Format
User Programmable
Offset Two’s Complement
or Straight Binary
POWER SUPPLY REQUIREMENTS
Power-Supply Voltage
2.7
3.3
V
Supply Current
Analog Current
320
A
Digital Current
70
A
Power Dissipation
Normal Mode
1.2
1.6
mW
Sleep Mode
0.25
mW
TEMPERATURE RANGE
Specified Performance
–40
+85
°C
NOTES: (1) Valid from AGND + 20mV to 2 VREF. (2) Applies after calibration. (3) Recalibration can remove these errors. (4) Ideal output voltage. (5) Using external
low-pass filter with 2kHz corner frequency. (6) See Command Register for description of CALPIN.
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