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TLV5638 Datasheet(PDF) 5 Page - Texas Instruments

Part No. TLV5638
Description  2.7-V TO 5.5-V LOW-POWER DUAL 12-BIT DIGITAL-TO-ANALOG CONVERTER WITH INTERNAL REFERENCE AND POWER DOWN
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Manufacturer  TI [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI - Texas Instruments

TLV5638 Datasheet(HTML) 5 Page - Texas Instruments

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ELECTRICAL CHARACTERISTICS (Continued)
TLV5638
SLAS225C – JUNE 1999 – REVISED JANUARY 2004
over recommended operating conditions, V
ref = 2.048 V, Vref= 1.024 V (unless otherwise noted)
STATIC DAC SPECIFICATIONS
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
Resolution
12
bits
C and I
±1.7
±4
LSB
suffixes
Integral nonlinearity, end point ad-
INL
See (1)
justed
Q and M
±1.7
±6
LSB
suffixes
DNL
Differential nonlinearity
See (2)
±0.4
±1
LSB
Zero-scale error (offset error at zero
EZS
See (3)
±24
mV
scale)
Zero-scale-error temperature coef-
EZSTC
See (4)
10
ppm/°C
ficient
% full
EG
Gain error
See(5)
±0.6
scale V
EGTC
Gain error temperature coefficient
See (6)
10
ppm/°C
OUTPUT SPECIFICATIONS
VO
Output voltage
RL= 10 kΩ
0
VDD-0.4
V
% full
Output load regulation accuracy
VO = 4.096 V, 2.048 V, RL= 2 kΩ
±0.25
scale V
REFERENCE PIN CONFIGURED AS OUTPUT (REF)
Vref(OUTL)
Low reference voltage
1.003
1.024
1.045
V
Vref(OUTH)
High reference voltage
VDD > 4.75 V
2.027
2.048
2.069
V
Iref(source)
Output source current
1
mA
Iref(sink)
Output sink current
-1
mA
Load capacitance
100
pF
PSRR
Power supply rejection ratio
-65
dB
REFERENCE PIN CONFIGURED AS INPUT (REF)
VI
Input voltage
0
VDD-1.5
V
RI
Input resistance
10
M
CI
Input capacitance
5
pF
Fast
1.3
MHz
Reference input bandwidth
REF = 0.2 Vpp + 1.024 V dc
Slow
525
kHz
Reference feedthrough
REF = 1 Vpp at 1.024 V dc(7)
-80
dB
DIGITAL INPUTS
IIH
HIgh-level digital input current
VI = VDD
1
µA
IIL
Low-level digital input current
VI = 0 V
-1
µA
Ci
Input capacitance
8
pF
(1)
The relative accuracy or integral nonlinearity (INL) sometimes referred to as linearity error, is the maximum deviation of the output from
the line between zero and full scale excluding the effects of zero code and full-scale errors. Tested from code 32 to 4095.
(2)
The differential nonlinearity (DNL) sometimes referred to as differential error, is the difference between the measured and ideal 1 LSB
amplitude change of any two adjacent codes. Monotonic means the output voltage changes in the same direction (or remains constant)
as a change in the digital input code.
(3)
Zero-scale error is the deviation from zero voltage output when the digital input code is zero.
(4)
Zero-scale-error temperature coefficient is given by: EZS TC = [EZS (Tmax) - EZS (Tmin)]/Vref× 106/(Tmax - Tmin).
(5)
Gain error is the deviation from the ideal output (2Vref - 1 LSB) with an output load of 10 kΩ excluding the effects of the zero-error.
(6)
Gain temperature coefficient is given by: EG TC = [EG(Tmax) - EG (Tmin)]/Vref× 106/(Tmax - Tmin).
(7)
Reference feedthrough is measured at the DAC output with an input code = 0x000.
5


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