Data Sheet

Broadcom ACHS-712x-DS101
7
ACHS-7121/7122/7123 Data Sheet
Fully Integrated, Hall Effect-Based Linear Current Sensor IC with 3 kV
RMS
Isolation and
Low-Resistance Current Conductor
ACHS-7122
Unless otherwise stated, all minimum/maximum specifications are over recommended operating conditions, C
F
= 1 nF.
All typical values are based on T
A
= 25°C, V
DD
= 5.0V, C
F
= 1 nF.
ACHS-7123
Unless otherwise stated, all minimum/maximum specifications are over recommended operating conditions, C
F
= 1 nF.
All typical values are based on T
A
= 25°C, V
DD
= 5.0V, C
F
= 1 nF.
Zero Current Output Error Slope ΔV
OE
— 0.06 — mV/°C T
A
= 25°C to 110°C 2 1
Output Noise V
N(RMS)
— 7.8 — mV BW = 2 kHz 9 10
Nonlinearity NL — 0.27 — % — 3 2
Total Output Error E
TOT
—±1.5— %— 4 5
Sensitivity Error Lifetime Drift E
SENS_DRIFT
—±2— %— —1
Total Output Error Lifetime Drift E
TOT_DRIFT
—±2— %— —1
Parameter Symbol Min. Typ. Max. Unit Test Conditions Fig. Note
Optimized Input Current Range I
P
–20 — 20 A — 7 4
Sensitivity Sens — 100 — mV/A –20A ≤ I
P
≤ 20A 1 1
Sensitivity Error E
SENS
–3 — 3 % T
A
= 25°C, V
DD
= 5V 1 1
Sensitivity Slope ΔSens — –0.01 — mV/A/°C T
A
= –40°C to 25°C 1 1
Sensitivity Slope ΔSens — 0.01 — mV/A/°C T
A
= 25°C to 110°C 1 1
Zero Current Output Error V
OE
–25 — 25 mV T
A
= 25°C 2 1
Zero Current Output Error Slope ΔV
OE
— 0.01 — mV/°C T
A
= –40°C to 25°C 2 1
Zero Current Output Error Slope ΔV
OE
— 0.02 — mV/°C T
A
= 25°C to 110°C 2 1
Output Noise V
N(RMS)
— 4.1 — mV BW = 2 kHz 9 10
Nonlinearity NL — 0.18 — % — 3 2
Total Output Error E
TOT
—±1.5— %— 4 5
Sensitivity Error Lifetime Drift E
SENS_DRIFT
—±2— %— —1
Total Output Error Lifetime Drift E
TOT_DRIFT
—±2— %— —1
Parameter Symbol Min. Typ. Max. Unit Test Conditions Fig. Note
Optimized Input Current Range I
P
–30 — 30 A — 7 4
Sensitivity Sens — 66 — mV/A –30A ≤ I
P
≤ 30A 1 1
Sensitivity Error E
SENS
–3 — 3 % T
A
= 25°C, V
DD
= 5V 1 1
Sensitivity Slope ΔSens — –0.01 — mV/A/°C T
A
= –40°C to 25°C 1 1
Sensitivity Slope ΔSens — 0.01 — mV/A/°C T
A
= 25°C to 110°C 1 1
Zero Current Output Error V
OE
–20 — 20 mV T
A
= 25°C 2 1
Zero Current Output Error Slope ΔV
OE
— 0.01 — mV/°C T
A
= –40°C to 25°C 2 1
Zero Current Output Error Slope ΔV
OE
— 0.02 — mV/°C T
A
= 25°C to 110°C 2 1
Parameter Symbol Min. Typ. Max. Unit Test Conditions Fig. Note