Datasheet

MAX5823/MAX5824/MAX5825
Ultra-Small, Octal Channel, 8-/10-/12-Bit Buffered
Output DACs with Internal Reference and I
2
C Interface
11Maxim Integrated
Typical Operating Characteristics (continued)
(MAX5825, 12-bit performance, T
A
= +25°C, unless otherwise noted.)
CHANNEL-TO-CHANNEL FEEDTHROUGH
(V
DD
= V
REF
= 5V, T
A
= +25NC,
R
L
= 2kI, C
L
= 200pF)
MAX5823 toc24
4µs/div
V
OUT0
5V/div
LOADED
V
OUT4
0.585 LSB/div
NO LOAD
TRANSITIONING DAC: 0 TO FULL SCALE
STATIC DAC: MIDSCALE
ANALOG CROSSTALK = 4.07nV*s
MAX5823 toc25
V
OUT0
5V/div
LOADED
V
OUT4
0.585 LSB/div
NO LOAD
4µs/div
CHANNEL-TO-CHANNEL FEEDTHROUGH
(V
DD
= 5V, V
REF
= 4.096V (INTERNAL),
T
A
= +25NC, R
L
= 2kI, C
L
= 200pF)
TRANSITIONING DAC: 0 TO FULL SCALE
STATIC DAC: MIDSCALE
ANALOG CROSSTALK = 3.3nV*S
MAX5823 toc26
20ns/div
DIGITAL FEEDTHROUGH
(V
DD
= V
REF
= 5V, R
L
= 10kI)
V
OUT_
2mV/div
DIGITAL CROSSTALK = 0.2nV*s
STATIC DAC MIDSCALE
OUTPUT LOAD REGULATION
MAX5823 toc27
I
OUT
(mA)
DV
OUT
(mV)
504020 30-10 0 10-20
-8
-6
-4
-2
0
2
4
6
8
10
-10
-30 60
V
DD
= V
REF
V
DD
= 5V
V
DD
= 3V
OUTPUT CURRENT LIMITING
MAX5823 toc28
I
OUT
(mA)
DV
OUT
(mV)
605030 40-10 0 10 20-20
-400
-300
-200
-100
0
100
200
300
400
500
-500
-30 70
V
DD
= V
REF
V
DD
= 5V
V
DD
= 3V
HEADROOM AT RAILS
vs. OUTPUT CURRENT (V
DD
= V
REF
)
MAX5823 toc29
I
OUT
(mA)
V
OUT
(V)
986 72 3 4 51
0.50
1.00
1.50
2.00
2.50
3.00
3.50
4.00
4.50
5.00
0
01
0
V
DD
= 5V, SOURCING
V
DD
= 3V, SOURCING
V
DD
= 3V AND 5V
SINKING
DAC = ZERO SCALE
DAC = FULL SCALE
NOISE-VOLTAGE DENSITY vs. FREQUENCY
(DAC AT MIDSCALE)
MAX5823 toc30
FREQUENCY (Hz)
NOISE-VOLTAGE DENSITY (nV/√Hz)
10k1k
50
100
150
200
250
300
350
0
100 100k
V
DD
= 5V, V
REF
= 2.5V
INTERNAL
V
DD
= 5V, V
REF
= 2.048V
INTERNAL
V
DD
= 5V, V
REF
= 3.5V
(EXTERNAL)
V
DD
= 5V, V
REF
= 4.096V
INTERNAL