LTC1590_15 Datasheet, PDF (3/12 Pages) Linear Technology – Dual Serial 12-Bit Multiplying DAC

LTC1590
ELECTRICAL CHARACTERISTICS
V_CC = 4.5V to 5.5V, V_REF = 10V, V_OUT1 = V_OUT2 = AGND = DGND = 0V, T_A = T_MIN to T_MAX, unless otherwise noted.
SYMBOL PARAMETER
Analog Outputs
C_OUT
Output Capacitance (Note 3)
Digital Input
V_IH
Digital Input High Voltage
V_IL
Digital Input Low Voltage
I_IN
Digital Input Current
C_IN
Digital Input Capacitance
Digital Output
V_OH
Digital Output High Voltage
V_OL
Digital Output Low Voltage
Timing Characteristics
t₁
D_IN to CLK Setup Time
t₂
D_IN to CLK Setup Hold Time
t₃
CLK High Time
t₄
CLK Low Time
t₅
CS/LD High Time
t₆
LSB CLK to CS/LD
t₇
CS/LD Low to CLK High
t₈
CLK Low to CS/LD Low
t₉
CLK to D_OUT Delay
Power Supply
V_CC
Operating Supply Range
I_CC
Supply Current
CONDITIONS
DAC Register Loaded to All 1s
DAC Register Loaded to All 0s
(Note 3) V_IN = 0V
I_OH = 200µA
I_OH = 1.6mA
Digital Inputs = 0V or V_CC
MIN TYP MAX
q
60
90
q
30
60
q
2.4
q
0.8
q
0.001 ±1
q
8
q
4
q
0.4
q
50
q
0
q
40
q
40
q
50
q
40
q
20
q
20
q
10
160
q
4.5
5
5.5
q
10
UNITS
pF
pF
V
V
µA
pF
V
V
ns
ns
ns
ns
ns
ns
ns
ns
ns
V
µA
The q denotes specifications which apply over the full operating
temperature range.
Note 1: ±0.5LSB = ±0.012% of full scale.
Note 2: Using internal feedback resistor.
Note 3: Guaranteed by design, not subject to test.
Note 4: I_OUT1 with DAC register loaded with all 0s.
Note 5: OUT1 load = 100Ω in parallel with 13pF.
Note 6: V_REF = 0V. DAC register contents changed from all 0s to all 1s or
all 1s to all 0s.
Note 7: DAC A output with V_{REF A} = 0V and V_{REF B} = 10kHz 20V_P-P, or
DAC B output with V_{REF B} = 0V, V_{REF A} = 10kHz 20V_P-P. Both DAC registers
loaded with all 1s.
Note 8: Glitch on DAC A or DAC B output when the other DAC makes a
full-scale transition.
Note 9: 10Hz to 100kHz. Calculation from e_n = √4KTRB where:
K = Boltzmann constant (J/K°); R = resistance (Ω); T = resistor temperature
(°K); B = bandwidth (Hz).
Note10: V_REF = 6V_RMS at 1kHz. DAC register loaded with all 1s, using
LT^®1124 op amp.
Note 11: V_REF = ±10V, 10kHz sine wave, DAC register loaded with all 0s,
using LT1358 op amp.
Note 12: –3dB bandwidth using LT1358 op amp.
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