LTC1588/LTC1589/LTC1592
U W
TYPICAL PERFOR A CE CHARACTERISTICS (LTC1592)
Differential Nonlinearity
vs Reference Voltage
in Unipolar Mode
Integral Nonlinearity
vs Reference Voltage
in Bipolar Mode
1.0
0.8
1.0
0.8
0.6
0.6
0.4
0.4
0.2
0.2
0
0
–0.2
–0.4
–0.6
–0.8
–1.0
–0.2
–0.4
–0.6
–0.8
–1.0
–10 –8 –6 –4 –2
0
2
4
6
8
10
–10 –8 –6 –4 –2
0
2
4
6
8
10
REFERENCE VOLTAGE (V)
REFERENCE VOLTAGE (V)
1588992 G06
1588992 G07
Differential Nonlinearity
vs Reference Voltage
in Bipolar Mode
Full-Scale Settling Waveform
1.0
0.8
0.6
LD PULSE
5V/DIV
0.4
0.2
GATED
SETTLING
WAVEFORM
500µV/DIV
0
–0.2
–0.4
–0.6
–0.8
–1.0
500ns/DIV
1592 G04
USING LT1468 OP AMP
CFEEDBACK = 20pF
0V TO 10V STEP
–10 –8 –6 –4 –2
0
2
4
6
8
10
REFERENCE VOLTAGE (V)
1588992 G08
U
U
U
PI FU CTIO S
RCOM (Pin 1): Center Tap Point of the Two Bipolar Resis-
tors R1 and R2. Normally tied to the inverting input of an
external amplifier. When these resistors are not used,
connect this pin to ground. The absolute maximum volt-
age range on this pin is –0.3V to 12V.
ROFS (Pin3):BipolarOffsetNetwork. Thispinprovidesthe
offset of the output voltage range for bipolar modes.
Accepts up to ±15V. Normally tied to R1 and the reference
input voltage VREF (5V). Alternatively, this pin may be
driven from a different voltage than VREF
.
R1 (Pin 2): Bipolar Resistor R1. The main reference input
VREF, typically 5V. Accepts up to ±15V. Normally tied to
ROFS (Pin 3) and the reference input voltage VREF (5V).
When not used connect this pin to ground.
RFB (Pin4):FeedbackNetwork.Normallytiedtotheoutput
of the current to voltage converter op amp. Range limited
to ±15V.
1588992fa
6
Linear Systems [ Linear Systems ]
