Datasheet

LTC2756
3
2756f
elecTrical characTerisTics
V
DD
= 5V, V(R
IN
) = 5V unless otherwise specified. The l denotes the
specifications which apply over the full operating temperature range, otherwise specifications are at T
A
= 25°C.
SYMBOL PARAMETER CONDITIONS
LTC2756B LTC2756A
UNITSMIN TYP MAX MIN TYP MAX
Static Performance
Resolution
l
18 18 Bits
Monotonicity
l
18 18 Bits
DNL Differential Nonlinearity
l
±1 ±0.25 ±1 LSB
INL Integral Nonlinearity
l
±2 ±0.5 ±1 LSB
GE Gain Error All Output Ranges
l
±40 ±5 ±28 LSB
Gain Error Temperature Coefficient ∆Gain/∆Temp ±0.25 ±0.25 ppm/°C
BZE Bipolar Zero Error All Bipolar Ranges
l
±24 ±2.5 ±16 LSB
Bipolar Zero Temperature Coefficient ±0.15 ±0.15 ppm/°C
Unipolar Zero-Scale Error Unipolar Ranges (Note 3)
l
±0.03 ±3.2 ±0.03 ±3.2 LSB
PSR Power Supply Rejection V
DD
= 5V, ±10%
V
DD
= 3V, ±10%
l
l
±1.6
±4
±0.05
±0.2
±0.8
±2
LSB/V
LSB/V
I
LKG
I
OUT1
Leakage Current T
A
= 25°C
T
MIN
to T
MAX
l
±0.05 ±2
±5
±0.05 ±2
±5
nA
nA
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
Analog Pins
Reference Inverting Resistors (Note 4)
l
16 20 kΩ
R
REF
DAC Input Resistance (Notes 5, 6)
l
8 10 kΩ
R
FB
Feedback Resistors (Note 6)
l
8 10 kΩ
R
OFS
Bipolar Offset Resistors (Note 6)
l
16 20 kΩ
R
VOSADJ
Offset Adjust Resistors
l
1024 1280 kΩ
R
GEADJ
Gain Adjust Resistors
l
2048 2560 kΩ
C
IOUT1
Output Capacitance Full-Scale
Zero-Scale
90
40
pF
Dynamic Performance
Output Settling Time Span Code = 0000, 10V Step. To ±0.0004% FS
(Note 7)
2.1 μs
Glitch Impulse V
DD
= 5V (Note 8)
V
DD
= 3V (Note 8)
2
0.4
nV•s
nV•s
Digital-to-Analog Glitch Impulse V
DD
= 5V (Note 9)
V
DD
= 3V (Note 9)
2.6
0.6
nV•s
nV•s
Reference Multiplying BW 0V to 5V Range,
Code = Full Scale, –3dB Bandwidth
1 MHz
Multiplying Feedthrough Error 0V to 5V Range, V
REF
= ±10V, 10kHz
Sine Wave
0.4 mV
THD Total Harmonic Distortion (Note 10) Multiplying –108 dB
Output Noise Voltage Density (Note 11) at I
OUT1
13 nV/√Hz
V
DD
= 5V, V(R
IN
) = 5V unless otherwise specified. The l denotes specifications that apply over the full operating temperature range,
otherwise specifications are at T
A
= 25°C.