Datasheet

LTC2657
8
2657f
ELECTRICAL CHARACTERISTICS
The l denotes the specifi cations which apply over the full operating
temperature range, otherwise specifi cations are at T
A
= 25°C. V
CC
= 4.5V to 5.5V, V
OUT
unloaded unless otherwise specifi ed.
LTC2657B-H16/LTC2657-H12 (Internal Reference = 2.048V)
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
t
OF
Output Fall Time V
O
= V
IH(MIN)
to V
O
= V
IL(MAX)
,
C
B
= 10pF to 400pF (Note 13)
l
20+0.1C
B
250 ns
t
SP
Pulse Width of Spikes Suppressed by Input
Filter
l
050ns
I
IN
Input Leakage 0.1V
CC
≤ V
IN
≤ 0.9V
CC
l
1µA
C
IN
I/O Pin Capacitance (Note 9)
l
10 pF
C
B
Capacitance Load for Each Bus Line
l
400 pF
C
CA n
External Capacitive Load on Address Pins
CA0, CA1 and CA2
l
10 pF
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
AC Performance
t
S
Settling Time (Note 10) ±0.024% (±1LSB at 12 Bits)
±0.0015% (±1LSB at 16 Bits)
3.9
9.1
µs
µs
Settling Time for 1LSB Step ±0.024% (±1LSB at 12 Bits)
±0.0015% (±1LSB at 16 Bits)
2.4
4.5
µs
µs
Voltage Output Slew Rate 1.8 V/µs
Capacitive Load Driving 1000 pF
Glitch Impulse (Note 11) At Mid-Scale Transition, L-Option 4 nV•s
At Mid-Scale Transition, H-Option 7 nV•s
DAC-to-DAC Crosstalk (Note 12) C
REFCOMP
= C
REFIN/OUT
= 0.22µF 0.8 nV•s
Multiplying Bandwidth 150 kHz
e
n
Output Voltage Noise Density At f = 1kHz
At f = 10kHz
85
80
nV/√Hz
nV/√Hz
Output Voltage Noise 0.1Hz to 10Hz, Internal Reference (L-Options)
0.1Hz to 10Hz, Internal Reference (H-Options)
0.1Hz to 200kHz, Internal Reference (L-Options)
0.1Hz to 200kHz, Internal Reference (H-Options)
8
12
600
650
µV
P-P
µV
P-P
µV
P-P
µV
P-P
The l denotes the specifi cations which apply over the full operating temperature range, otherwise specifi cations are at T
A
= 25°C.
V
CC
= 2.7V to 5.5V, V
OUT
unloaded unless otherwise specifi ed. LTC2657B-H16/LTC2657-H12/ LTC2657B-L16/LTC2657-L12