U4091BM-N Datasheet, PDF (33/38 Pages) ATMEL Corporation – PROGRAMMABLE TELEPHONE AUDIO PROCESSOR

U4091BM-N
Electrical Characteristics (Continued)
f = 1 kHz, 0 dBm = 775 mV_rms, IVMIC = 0.3 mA, IMP = 3 mA, R_DC = 1.3 MΩ, T_amb = 25°C, Z_ear = 68 nF + 100 Ω,
RLS = 50 Ω, Z_M = 68 nF, resonator: f = 3.58 MHz, all bits in reset condition, unless otherwise specified.
Parameters
Test Conditions
Symbol
Min.
Typ.
Max.
Unit
Maximum input level AMPB
I4O5 = I5O4 = 1, I4O4 = 0
600
mV
Maximum output level AMREC
I4O4 = 1
VB-
600 mV
V_PP
Offset
Mute switching matrix
I4O4: 1 to 0
I4O4 = 0
∆V_AMREC
60
±30
mV
dB
Power-on Reset
VL = 0, V_MP = 3.3 V, V_B = 5 V, U4091 in Power-down Mode
Power-on reset by ES VB high,
VB = 4 V, ES = 4 V,
VMP threshold
rise VMP until RESET goes to low
VMP_on
2.65
2.75
2.85
V
Power-on reset by ES VMP high,
VB threshold
VMP = 3 V, ES = 4 V,
rise VB until RESET goes to low
VB_on
3.2
V
Low-voltage Interrupt
VL = 0, V_MP = 3.3 V, V_B = 0 V
VMP decreasing
Decrease VMP until INT
returns to high
VLVI
2.5
2.6
2.7
V
Power-off Reset
VL = 0, V_MP = 3.3 V, V_B = 0 V
Low-voltage reset
Decrease VMP until RESET returns to
low
VLVR
2.35
2.45
2.55
V
Difference voltage between low-
voltage interrupt and reset
VLVI - VLVR
100
150
mV
Logical Part
V_MP = 3.3 V, V_B = 5 V
Output impedance at OSCOUT
0.6
0.9
1.2
kΩ
Pins SCL,
SDA (input mode)
Input leakage current
Low level
High level
0 < V_i < V_MP
0.8 ×
V_MP
-1
0.2 ×
V_MP
V
V
µA
1
Pins INT,
SDA (output mode)
Output low
(resistance to GND)
150
230
350
Ω
Switch for Additional Impedance (Pin IMPSW)
V_MP = 3.3 V, V_B = 3 V
Switch-off leakage current
0 < V_i < V_MP
IMPSW = 0
-0.5
5
µA
Resistance to GND
IMPSW = 1
50
80
Ω
Maximum current
IMPSW = 1
-5
5
mA
AFS (Acoustic Feedback Suppression), I_L = 14 mA, V_GEN = 300 mV,
ERX = ETX = ENMIC = ENSTBAL = I1O1 = I3O3 = 1, SL[0:1] = 0, LF[0:3] = 1, P[0:4] = 31, AGARX[0:2] = 0
Adjustment range of attenuation
I_L ≥ 15 mA
0
50
dB
Attenuation of transmit gain
I_L ≥ 15 mA, I_INLDT = 0 µA
I_INLDR = 10 µA
∆G_T
47
50
53
dB
Attenuation of speaker amplifier
I_L ≥ 15 mA, I_INLDT = 10 µA
I_INLDR = 0 µA
G_SA
47
50
53
dB
Note: 1. This is a space of time where the bus must be from data transmission and before a new transmission can be started
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4666B–CORD–08/04