Datasheet

AD5293
Rev. D | Page 4 of 24
Parameter Symbol Conditions Min Typ
1
Max Unit
DYNAMIC CHARACTERISTICS
4, 8
Bandwidth BW −3 dB 520 kHz
Total Harmonic Distortion THD
W
V
A
= 1 V rms, V
B
= 0 V, f = 1 kHz, −93 dB
V
W
Settling Time t
S
V
A
= 30 V, V
B
= 0 V, ±0.5 LSB error
band, initial code = zero scale
Code = full scale, R-normal mode 750 ns
Code = full scale, R-perf mode 2.5 μs
Code = half scale, R-normal mode 2.5 μs
Code = half scale, R-perf mode 5 μs
Resistor Noise Density e
N_WB
R
WB
= 10 kΩ, T
A
= 25°C,
0 kHz to 200 kHz
10 nV/√Hz
1
Typicals represent average readings at 25°C; V
DD
= +15 V, V
SS
= −15 V, and V
LOGIC
= 5 V.
2
Resistor position nonlinearity error. R-INL is the deviation from an ideal value measured between R
WB
at Code 0x00B to Code 0x3FF or between R
WA
at Code 0x3F3 to
Code 0x000. R-DNL measures the relative step change from ideal between successive tap positions. The specification is guaranteed in resistor performance mode with
a wiper current of 1 mA for V
A
< 12 V and 1.2 mA for V
A
≥ 12 V.
3
The terms resistor performance mode and R-perf mode are used interchangeably.
4
Guaranteed by design; not subject to production test.
5
INL and DNL are measured at V
W
with the RDAC configured as a potentiometer divider similar to a voltage output DAC. V
A
= V
DD
and V
B
= 0 V. DNL specification limits
of ±1 LSB maximum are guaranteed monotonic operating conditions.
6
The A, B, and W resistor terminals have no limitations on polarity with respect to each other. Dual-supply operation enables ground-referenced bipolar signal
adjustment.
7
P
DISS
is calculated from (I
DD
× V
DD
) + (I
SS
× V
SS
) + (I
LOGIC
× V
LOGIC
).
8
All dynamic characteristics use V
DD
= +15 V, V
SS
= −15 V, and V
LOGIC
= 5 V.
RESISTOR PERFORMANCE MODE CODE RANGE—20 kΩ VERSIONS
Table 2.
R
AB
= 20 kΩ
|V
DD
− V
SS
| = 30 V to 33 V |V
DD
− V
SS
| = 26 V to 30 V |V
DD
− V
SS
| = 22 V to 26 V |V
DD
− V
SS
| = 21 V to 22 V
Resistor
Tolerance
per Code
R
WB
R
WA
R
WB
R
WA
R
WB
R
WA
R
WB
R
WA
1% R-Tolerance
From 0x15E
to 0x3FF
From 0x000
to 0x2A1
From 0x1F4
to 0x3FF
From 0x000
to 0x20B
From 0x1F4
to 0x3FF
From 0x000
to 0x20B
N/A N/A
2% R-Tolerance
From 0x8C
to 0x3FF
From 0x000
to 0x373
From 0xB4
to 0x3FF
From 0x000
to 0x34B
From 0xFA
to 0x3FF
From 0x000
to 0x305
From 0xFA
to 0x3FF
From 0x000
to 0x305
3% R-Tolerance
From 0x5A
to 0x3FF
From 0x000
to 0x3A5
From 0x64
to 0x3FF
From 0x000
to 0x39B
From 0x78
to 0x3FF
From 0x000
to 0x387
From 0x78
to 0x3FF
From 0x000
to 0x387