AD5231BRUZ100

更新时间： 2024-02-28 14:35:13

品牌	Logo	应用领域
亚德诺 - ADI		数字电位计存储
页数	文件大小	规格书
28页	536K
描述
Nonvolatile Memory, 1024-Position Digital Potentiometer

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AD5231BRUZ100 数据手册

AD5231

Data Sheet

Parameter

Symbol

Conditions

Min

Typ ¹

Max

Unit

POWER SUPPLIES

Single-Supply Power Range

Dual-Supply Power Range

Positive Supply Current

Negative Supply Current

V_DD

V_DD/V_SS

I_DD

V_SS= 0 V

2.7

2.25

5.5

2.75

µA

V_IH= V_DDor V_IL= GND

V_IH= V_DDor V_IL= GND,

2.7

0.5

I_SS

V_DD= +2.5 V, V_SS= −2.5 V

EEMEM Store Mode Current

I_DD(store)

V_IH= V_DDor V_IL= GND,

_SS= GND, I_SS≈ 0

I_SS(store)

I_DD(restore)

V_DD= +2.5 V, V_SS= −2.5 V

V_IH= V_DDor V_IL= GND,

−40

EEMEM Restore Mode Current⁷

0.3

_SS= GND, I_SS≈ 0

I_SS(restore)

P_DISS

P_SS

V_DD= +2.5 V, V_SS= −2.5 V

V_IH= V_DDor V_IL= GND

ΔV_DD= 5 V 10%

−0.3

−3

0.018

0.002

−9

0.05

0.01

%/%

Power Dissipation⁸

Power Supply Sensitivity⁵

DYNAMIC CHARACTERISTICS^{5, 9}

Bandwidth

−3 dB, R_AB= 10 kΩ/50 kΩ/

100 kΩ

V_A= 1 V rms, V_B= 0 V, f = 1 kHz,

370/85/44

0.045

kHz

Total Harmonic Distortion

THD_W

_AB= 10 kΩ

V_A= 1 V rms, V_B= 0 V, f = 1 kHz,

_AB= 50 kΩ, 100 kΩ

V_A= V_DD, V_B= 0 V,

_W= 0.50% error band,

0.022

V_WSettling Time

t_S

1.2/3.7/7

µs

Code 0x000 to 0x200

for R_AB= 10 kΩ/50 kΩ/100 kΩ

Resistor Noise Voltage

e_{N_WB}

R_WB= 5 kΩ, f = 1 kHz

nV/√Hz

¹Typical values represent average readings at 25°C and V_DD= 5 V.

²Resistor position nonlinearity error (R-INL) is the deviation from an ideal value measured between the maximum resistance and the minimum resistance wiper

positions. R-DNL measures the relative step change from ideal between successive tap positions. I_W~ 50 µA @ V_DD= 2.7 V and I_W~ 400 µA @ V_DD= 5 V for the

R_AB= 10 kΩ version, I_W~ 50 µA for the R_AB= 50 kΩ, and I_W~ 25 µA for the R_AB= 100 kΩ version (see Figure 26).

³INL and DNL are measured at V_Wwith the RDAC configured as a potentiometer divider similar to a voltage output DAC. V_A= V_DDand V_B= V_SS. DNL specification limits of

−1 LSB minimum are guaranteed monotonic operating condition (see Figure 27).

⁴Resistor Terminal A, Resistor Terminal B, and Resistor Terminal W have no limitations on polarity with respect to each other. Dual-supply operation enables ground-

referenced bipolar signal adjustment.

⁵Guaranteed by design and not subject to production test.

⁶Common-mode leakage current is a measure of the dc leakage from any Terminal B–W to a common-mode bias level of V_DD/2.

⁷EEMEM restore mode current is not continuous. Current consumed while EEMEM locations are read and transferred to the RDAC register (see Figure 23). To minimize

power dissipation, a NOP Instruction 0 (0x0) should be issued immediately after Instruction 1 (0x1).

⁸P_DISSis calculated from (I_DD× V_DD) + (I_SS× V_SS).

⁹All dynamic characteristics use V_DD= +2.5 V and V_SS= −2.5 V.

Rev. D | Page 4 of 28

1 2 345 6 7...28

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