AMC7834 Datasheet, PDF (10/93 Pages) Texas Instruments – AMC7834 12-Bit Integrated Power-Amplifier Monitor and Control System with Temperature, Current and Voltage Supervision Capabilities

AMC7834
SLAS972B – NOVEMBER 2014 – REVISED MARCH 2016
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Electrical Characteristics—DAC Specifications (continued)
The electrical ratings specified in this section apply to all specifications in this document, unless otherwise noted. These
specifications are interpreted as conditions that do not degrade the device parametric or functional specifications for the life of
the product containing it. AV_DD = DV_DD = 5 V, AV_CC = 5 V, AV_SS = –5 V, IOV_DD = 3.3 V, PAV_DD = 5 V, AGND = DGND = 0 V,
external 2.5 V reference, DAC output range = 0 to 5 V for all DACs, no load on the DACs, current sense inputs common
mode at 48 V, T_A = –40°C to +105°C
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX UNIT
DAC OUTPUT CHARACTERISTICS
DACn_range set to 00
–4
1
Bipolar DAC range⁽¹⁾
DACn_range set to 01
DACn_range set to 10
–5
0
V
–5
0
DACn_range set to 11
0
5
Auxiliary DAC range⁽²⁾
AUXDACn_range set to 0
AUXDACn_range set to 1
0
5
V
2.5
7.5
Short-circuit current
Load current⁽³⁾
Maximum capacitive
load ⁽⁴⁾
Bipolar DACs: Full-scale current shorted to AV_SS or
AV_DD
Auxiliary DACs: Full-scale current shorted to AGND or
AV_CC
Bipolar DACs: Source or sink with 300 mV headroom
from AV_DD or AV_SS, voltage drop < 25 mV
Auxiliary DACs: Source or sink with 300 mV headroom
from AV_CC or AGND, voltage drop < 25 mV
All DAC outputs. R_L = ∞
45
mA
±10
mA
0
10
nF
DC output impedance
All DAC outputs. Code set to 800h, ±10 mA
1
Ω
Glitch energy
All DAC outputs. Transition: Code 7FFh to 800h; 800h to
7FFh
1
nV-s
Auxiliary DACs. 1 kHz, code 800h
Bipolar DACs. 1 kHz, code 800h
200
nV/√Hz
100
Output noise
Auxiliary DACs. Integrated noise from 0.1 Hz to 10 Hz,
code 800h
Bipolar DACs. Integrated noise from 0.1 Hz to 10 Hz,
code 800h
20
µV_PP
10
CLAMP OUTPUT MODE
VCLAMP [1:2] voltage
range
0
–AV_SS / 3
V
VCLAMP [1:2] input
current
±0.5
µA
Clamp output voltage
Bipolar DACs. Clamp voltage = –3 × VCLAMP[1:2]
Auxiliary DACs
AV_SS
AGND
0
V
Clamp output current
Bipolar DACs. Source, sink, or both with 300-mV
headroom from AV_SS, voltage drop < 25 mV
±10
mA
Clamp pull-down
resistance
Auxiliary DACs. Measured to AGND
Bipolar DACs. VCLAMP buffers inactive (AV_SS clamp
mode). Measured to AV_SS
9
kΩ
550
Ω
(1) The output voltage must not be greater than AV_DD or lower than AV_SS. A minimum of 100 mV headroom from AV_DD is required.
(2) The output voltage must not be greater than AV_CC or lower than AGND. A minimum of 100 mV headroom from AV_CC is required.
(3) If all channels are simultaneously loaded, care must be taken to ensure the thermal conditions for the device are not exceeded.
(4) To be sampled during initial release to ensure compliance; not subject to production testing.
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