3
LTC1599
sn1599 1599fs
Note 9: V
REF
= 0V. DAC register contents changed from all 0s to all 1s or
all 1s to all 0s. LD high, WR and MLBYTE pulsed.
Note 10: V
REF
= 6V
RMS
at 1kHz. DAC register loaded with all 1s.
R
L
= 600Ω. Unipolar mode op amp = LT1468.
Note 11: Calculation from e
n
= √4kTRB where: k = Boltzmann constant
(J/°K), R = resistance (Ω), T = temperature (°K), B = bandwidth (Hz).
Note 12: Midscale transition code 0111 1111 1111 1111 to
1000 0000 0000 0000.
Note 13: R1 and R2 are measured between R1 and R
COM
, R2 and R
COM
.
Note 1: Absolute Maximum Ratings are those values beyond which the life
of a device may be impaired.
Note 2: ±1LSB = ±0.0015% of full scale = ±15.3ppm of full scale.
Note 3: Using internal feedback resistor.
Note 4: Guaranteed by design, not subject to test.
Note 5: I
(OUT1)
with DAC register loaded to all 0s.
Note 6: Typical temperature coefficient is 100ppm/°C.
Note 7: I
OUT1
load = 100Ω in parallel with 13pF.
Note 8: To 0.0015% for a full-scale change, measured from the falling
edge of LD.
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
Reference Input
R
REF
DAC Input Resistance (Unipolar) (Note 6) ● 4.5 6 10 kΩ
R1, R2 R1, R2 Resistance (Bipolar) (Notes 6, 13) ● 91420 kΩ
R
OFS
, R
FB
Feedback and Offset Resistances (Note 6) ● 9 13.5 20 kΩ
AC Performance (Note 4)
Output Current Settling Time (Notes 7, 8) 1 µs
Midscale Glitch Impulse (Note 12) 1.5 nV-s
Digital-to-Analog Glitch Impulse (Note 9) 1 nV-s
Multiplying Feedthrough Error V
REF
= ±10V, 10kHz Sine Wave 1 mV
P-P
THD Total Harmonic Distortion (Note 10) 108 dB
Output Noise Voltage Density (Note 11) 10 nV/√Hz
Analog Outputs (Note 4)
C
OUT
Output Capacitance (Note 4) DAC Register Loaded to All 1s: C
OUT1
● 115 130 pF
DAC Register Loaded to All 0s: C
OUT1
● 70 80 pF
Digital Inputs
V
IH
Digital Input High Voltage ● 2.4 V
V
IL
Digital Input Low Voltage ● 0.8 V
I
IN
Digital Input Current ● 0.001 ±1 µA
C
IN
Digital Input Capacitance (Note 4) V
IN
= 0V ● 8pF
Timing Characteristics
t
DS
Data to WR Setup Time ● 80 20 ns
t
DH
Data to WR Hold Time ● 0 –12 ns
t
WR
WR Pulse Width ● 80 25 ns
t
BWS
MLBYTE to WR Setup Time ● 0 –12 ns
t
BWH
MLBYTE to WR Hold Time ● 0 –12 ns
t
LD
LD Pulse Width ● 150 55 ns
t
CLR
Clear Pulse Width ● 150 50 ns
t
LWD
WR to LD Delay Time ● 0ns
Power Supply
V
CC
Supply Voltage ● 4.5 5 5.5 V
I
CC
Supply Current Digital Inputs = 0V or V
CC
● 10 µA
ELECTRICAL CHARACTERISTICS
The ● denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C. V
CC
= 5V ±10%, V
REF
= 10V, I
OUT1
= I
OUT2F
= I
OUT2S
= DGND = 0V,
T
A
= T
MIN
to T
MAX
unless otherwise noted.
