LTC1660_15 Datasheet, PDF (5/18 Pages) Linear Technology – Micropower Octal 8-Bit and 10-Bit DACs

LTC1665/LTC1660
TYPICAL PERFORMANCE CHARACTERISTICS (LTC1665/LTC1660)
Midscale Output Voltage
vs Load Current
3 V_REF = V_CC
2.9
CODE = 128 (LTC1665)
CODE = 512 (LTC1660)
2.8
2.7
V_CC = 5.5V
2.6
2.5
V_CC = 5V
2.4
2.3
V_CC = 4.5V
2.2
2.1
2
SOURCE
SINK
–30 –20 –10 0 10
I_OUT (mA)
20 30
166560 G01
Midscale Output Voltage
vs Load Current
2 V_REF = V_CC
1.9
CODE = 128 (LTC1665)
CODE = 512 (LTC1660)
1.8
1.7
V_CC = 3.6V
1.6
1.5
V_CC = 3V
1.4
1.3
V_CC = 2.7V
1.2
1.1
1
SOURCE SINK
–15 –12 – 8 – 4 0 4
I_OUT (mA)
8 12 15
166560 G02
Minimum Supply Headroom
vs Load Current (Output Sourcing)
1400
1200
1000
V_REF = 4.096V
ΔV_OUT < 1LSB
CODE = 255 (LTC1665)
CODE = 1023 (LTC1660)
125°C
800
25°C
600
–55°C
400
200
0
0
2
4
6
8
10
| | I_OUT (mA) (SOURCING)
166560 G03
Minimum V_OUT
vs Load Current (Output Sinking)
1400
V_CC = 5V
1200 ^{CODE = 0}
125°C
1000
800
25°C
600
–55°C
400
200
0
0
2
4
6
8
10
| | I_OUT (mA) (SINKING)
166560 G04
Large-Signal Step Response
5
V_CC = V_REF = 5V
10% TO
4
90% STEP
3
2
1
0
0
20
40
60
80 100
TIME (μs)
166560 G05
Supply Current vs Temperature
500
480
460
V_CC = 5.5V
440
V_CC = 4.5V
420
V_CC = 3.6V
400
380
360
V_CC = 2.7V
340
320
300
–55 –35 –15 5 25 45 65 85 105 125
TEMPERATURE (°C)
166560 G06
Supply Current
vs Logic Input Voltage
2
ALL DIGITAL INPUTS
SHORTED TOGETHER
1.6
1.2
0.8
0.4
0
0
1
2
3
4
5
LOGIC INPUT VOLTAGE (V)
166560 G07
166560fa
5