LTC1450_15 Datasheet, PDF (5/16 Pages) Linear Technology – Parallel Input, 12-Bit Rail-to-Rail Micropower DACs in SSOP

TYPICAL PERFORMANCE CHARACTERISTICS
LTC1450/LTC1450L
LTC1450L Supply Current
vs Logic Input Voltage
1600
1400
V_CC = 3V
ALL LOGIC INPUTS
TIED TOGETHER
1200
1000
800
600
400
200
0
0 0.3 0.6 0.9 1.2 1.5 1.8 2.1 2.4 2.7 3.0
LOGIC INPUT VOLTAGE (V)
1450/50L G04
LTC1450 Output Offset Voltage
vs Temperature
5.0
4.5
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0
– 55 –35 –15 5 25 45 65 85 105 125
TEMPERATURE (°C)
1450/50L G07
Power Supply Rejection
vs Frequency
90
CODE = FFF_H
80
70
60
50
V_OUT
REFOUT
40
30
20
10
0
1
10 100 1k 10k 10M
FREQUENCY (Hz)
1450/50L G10
LTC1450 Output Swing
vs Load Resistance
4.5
4.0
FULL SCALE
3.5
R_L TIED TO GND
3.0
2.5
V_CC = 5V
2.0
1.5
1.0
0.5
0
10
ZERO SCALE
R_L TIED TO V_CC
100
1k
LOAD RESISTANCE (Ω)
10k
1450/50L G05
LTC1450
Differential Nonlinearity (DNL)
0.2
LTC1450 Pull-Down Voltage vs
Output Sink Current Capability
1000
125°C
100
25°C
10
–55°C
1
0.1
0.0001 0.001 0.01 0.1 1 10 100
OUTPUT SINK CURRENT (mA)
1450/50L G06
LTC1450
Integral Nonlinearity (INL)
2
0
0
– 0.2
0 512 1024 1536 2048 2560 3072 3584 4095
CODE
1450/50L G08
LTC1450 Total Harmonic
Distortion + Noise vs Frequency
–40
V_CC = 5V
V_REFHI = 2V_P-P
–50 V_OUT = 4V_P-P
–60
–70
–80
–90
–100
100
1k
10k
FREQUENCY (Hz)
100k
1450/50L G11
–2
0 512 1024 1536 2048 2560 3072 3584 4095
CODE
1450/50L G09
LTC1450
Broadband Output Noise
CODE = FFF_H
X1/X2 = GND
BW = 3Hz to 1.2MHz
TOTAL = 0.35mV_RMS
5ms/DIV
1450/50L G12
5