DAC8734_091 Datasheet, PDF (3/41 Pages) Texas Instruments – Quad, 16-Bit, High-Accuracy, ±16V Output, Serial Input DIGITAL-TO-ANALOG CONVERTER

DAC8734
www.ti.com .................................................................................................................................................. SBAS465A – MAY 2009 – REVISED SEPTEMBER 2009
ELECTRICAL CHARACTERISTICS
All specifications at T_A = T_MIN to T_MAX, AV_DD = +11V to +18V, AV_SS = –11V to –18V, V_REF = REF-A = REF-B = +5V,
DV_DD = +5V, IOV_DD = +1.8V to DV_DD, AGND = DGND = REFGND-A = REFGND-B = SGND-x = 0V, and DAC gain = 4, unless
otherwise noted.
PARAMETER
CONDITIONS
STATIC PERFORMANCE
Bipolar Output
Resolution
Linearity error, INL
Differential linearity error, DNL
Bipolar zero error⁽¹⁾
Bipolar zero error TC⁽²⁾
T_A = +25°C, before user calibration
T_A = +25°C, after user calibration⁽²⁾
Gain error⁽¹⁾
Gain error TC⁽²⁾
DC crosstalk⁽²⁾⁽³⁾
T_A = +25°C, before user calibration
T_A = +25°C, after user calibration⁽²⁾
Output unloaded
Unipolar Output
Resolution
Linearity error, INL
Differential linearity error, DNL
Zero error
AV_DD = +21V, AV_SS = –11V
AV_DD = +21V, AV_SS = –11V
AV_DD = +21V, AV_SS = –11V, T_A = +25°C, before user
calibration
AV_DD = +21V, AV_SS = –11V, T_A = +25°C, after user
calibration ⁽²⁾
Zero error TC⁽²⁾
AV_DD = +21V, AV_SS = –11V
Gain error
AV_DD = +21V, AV_SS = –11V, T_A = +25°C, before user
calibration
AV_DD = +21V, AV_SS = –11V, T_A = +25°C, after user
calibration ⁽²⁾
Gain error TC⁽²⁾
DC crosstalk⁽²⁾⁽³⁾
AV_DD = +21V, AV_SS = –11V
AV_DD = +21V, AV_SS = –11V, output unloaded
ANALOG OUTPUT (V_OUT-0 to V_OUT-3)
Bipolar voltage output⁽⁴⁾
Unipolar voltage output⁽⁴⁾
AV_DD = +16.5V, AV_SS = –16.5V, V_REF = +7.5V, gain = 4
V_REF = +5V, gain = 4
AV_DD = +21V, AV_SS = –11V, V_REF = +5V, gain = 4
Output voltage drift vs time
Operating for 500 hours at +25°C
Operating for 1000 hours at +25°C
Output impedance⁽²⁾
Short-circuit current⁽²⁾⁽⁵⁾
Load current⁽⁴⁾
±3mA load current
Output changes no more than ±1 LSB
Capacitive load stability⁽²⁾
Power-supply rejection⁽²⁾⁽⁴⁾
AV_DD = +5V to +18V, AV_SS = –5V to –18V,
DV_DD = 5V ±10%, V_REF = 2V
DAC8734
MIN
TYP
16
±0.125
±0.5
±1
±0.5
16
±0.125
±0.2
±1
±0.5
–15
–10
0
2
3
0.005
10
±3
±0.3
MAX
UNIT
Bits
±1
LSB
±1
LSB
±4
LSB
LSB
ppm FSR/°C
±4
LSB
LSB
ppm FSR/°C
±0.2
LSB
Bits
±1
LSB
±1
LSB
±4
LSB
LSB
ppm FSR/°C
±4
LSB
LSB
ppm FSR/°C
±0.2
LSB
+15
V
+10
V
+20
V
ppm of FSR
ppm of FSR
Ω
mA
mA
700
pF
LSB
(1) See the User Calibration for Zero-Code Error and Gain Error section for details.
(2) Specified by design and characterization.
(3) DC crosstalk is the dc change in the output of one channel as a result of a full-scale code change and subsequent output change on
another channel. The DAC outputs are buffered by op amps that share common AV_DD and AV_SS power supplies. Multiple V_DD and V_SS
terminals are provided to minimize dc crosstalk.
(4) The analog output must not be greater than (AV_DD – 1.0V) and must not be less than (AV_SS + 1.0V).
(5) When the output current is greater than the specification, the current is clamped at the specified maximum value.
Copyright © 2009, Texas Instruments Incorporated
Product Folder Link(s): DAC8734
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