SAA7348GP Datasheet, PDF (51/60 Pages) NXP Semiconductors – All Compact Disc Engine ACE

Philips Semiconductors
All Compact Disc Engine (ACE)
Preliminary specification
SAA7348GP
SYMBOL
PARAMETER
CONDITIONS
MIN.
TYP.
MAX. UNIT
INPUTS/OUTPUTS: AD0 TO AD7, A8 TO A15, R_XD0, T_XD0, INT0, INT1, R_XD1, T_XD1, WR AND RD
V_IL
LOW-level input voltage
−0.3
−
V_IH
HIGH-level input voltage
0.7 × V_DD −
V_OL
LOW-level output voltage
I_OL = 2 mA
0
−
V_OH
HIGH-level output voltage
I_OH = −2 mA
V_DD − 0.4 −
I_L
3-state leakage current
V_IN = 0 − V_DD
−10
−
t_o(r)
output rise time
10% to 90% levels; −
24
C_L = 20 pF
t_o(f)
output fall time
90% to 10% levels; −
28
C_L = 20 pF
C_L
load capacitance
−
−
C_i
input capacitance
−
−
INPUT: XTALI (EXTERNAL CLOCK)
V_IL
LOW-level input voltage
−0.3
−
V_IH
HIGH-level input voltage
−2.0
−
t_IH
input HIGH time
relative to period
45
−
I_LI
input leakage current
−10
−
C_i
input capacitance
−
−
OUTPUT: XTALO
f_xtal
crystal frequency
note 8
8
g_m(mutual)
mutual transconductance
at 100 kHz
−
G_v
small signal voltage gain
A_V = g_m × R_O
−
C_F
feedback capacitance
−
C_o
output capacitance
−
8.4672
10
18
−
−
Notes
0.3 × V_DD V
V_DD + 0.3 V
0.4
V
V_DD
V
+10
µA
−
ns
−
ns
50
pF
10
pF
+0.5
V
V_DD + 0.3 V
55
%
+10
µA
10
pF
35
MHz
−
mA/V
−
5
pF
10
pF
1. f_sys is always equivalent to ^{s----e---r--v---o--2---c---l-o----c---k-} ; see Section 10.2.
2. Current input range (resistor range) can be extended by 25% (minimum and maximum) but gain tolerance in this
region is 25%.
3. I_{i (max)} = -V---R-^G----^Ae---_xP--_t--^×-_×----C-C----^Dr--_e-^A--_f--^C- for unipolar A/D converter. For D1, D2, D3 and D4, C_ref = C_DAC. For S1 and S2,
C_ref = 0.5 × C_DAC
4. Internal reference source with 32 different output voltages. Selection is made during a calibration period or via the
serial interface. The values given are for an unloaded V_RH. The output voltage V_RH = 0.5 × 10^{4----4-v--.--4--} , where
v = 0 to 31.
5. V_RH = 2.5 V, measuring bandwidth: 200 Hz to 20 kHz, f_i(ADC) = 1 kHz.
6. f_ripple = 1 kHz, V_ripple = 0.5 V peak-to-peak.
7. Gain tolerance is determined by the accuracy of the external resistor R_ext.
8. It is recommended that the series resistance of the crystal or ceramic resonator is ≤60 Ω.
1997 Jul 11
51