Datasheet

DAC161P997
www.ti.com SNAS515E –JULY 2011–REVISED OCTOBER 2013
ELECTRICAL CHARACTERISTICS (continued)
Unless otherwise noted, these specifications apply for VA = VD = 2.7V to 3.6V, T
A
= 25°C, external bipolar transistor:
2N3904, R
E
= 22Ω, C
1
= C
2
= C
3
= 2.2nF. Boldface limits are over the temperature range of −40°C ≤ T
A
≤ 105 ° C unless
otherwise noted.
Symbol Parameter Conditions Min Typ Max Units
DC ACCURACY
N Resolution 16 Bits
0x2AAA < DACCODE < 0xD555
INL Integral Non-Linearity
(2)
–2.1 +3.3
(4mA < I
LOOP
< 20 mA)
µA
DNL Differential Non-Linearity See
(3)
–0.2 +0.2
TUE Total Unadjusted Error 0x2AAA < DACCODE < 0xD555 –0.23 +0.23 %FS
OE Offset Error See
(4)
−9.16 +9.16 µA
Offset Error Temp. Coefficient 138 nA/°C
GE Gain Error See
(5)
−0.22 0.22 %FS
Gain Error Temp. Coefficient 5 29 ppmFS/°C
4mA Loop Current Error DACCODE = 0x2AAA −18 +18
20 mA Loop Current Error DACCODE = 0xD555 −55 +55
µA
IERRL LOW ERROR Current ERR_LOW = default 3361 3375 3391
IERRH HIGH ERROR Current ERR_HIGH = default 21702 21750 21817
Long Term Drift — mean shift of
LTD 12 mA output current after 1000 90 ppmFS
hrs at 150°C
LOOP CURRENT OUTPUT (OUT)
Minimum tested at DACCODE =
Output Current 0.18 24 mA
0x01C2
(6)
Output Impedance 100 MΩ
COMA to OUT voltage drop I
OUT
= 24 mA 960 mV
BASE OUTPUT
BASE short circuit output current BASE forced to COMA potential 10 mA
DYNAMIC CHARACTERISTICS
Output Noise Density 1kHz 20 nA/√Hz
Integrated Output Noise 1Hz to 1kHz band 300 nA
RMS
SWIF I/O CHARACTERISTICS
VIH DIN 0.7*VD
V
VIL DIN 0.3*VD
CDIN DIN input capacitance 10 pF
VOH DBACK I = 3mA 2216
I = 5mA 1783
mV
VOL DBACK I = 3mA 547
I = 5mA 1260
TD DIN to DBACK delay 8 ns
OPEN DRAIN OUTPUTS
I = 3mA 550
VOL ACKB mV
I = 5mA 1370
I = 300 µA 66
VOL ERRB mV
I = 3mA 602
(2) INL is measured using “best fit” method in the output current range of 4 mA to 20 mA.
(3) Specified by design.
(4) Here offset is the y-intercept of the straight line defined by 4 mA and 20 mA points of the measured transfer characteristic.
(5) Here Gain Error is the difference in slope of the straight line defined by measured 4 mA and 20 mA points of transfer characteristic, and
that of the ideal characteristic.
(6) This should be treated as the minimum LOOP current ensured specification.
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