DAC8812 Datasheet, PDF (4/18 Pages) Texas Instruments – Dual, Serial Input 16-Bit Multiplying Digital-to-Analog Converter

DAC8812
SBAS349A – AUGUST 2005 – REVISED DECEMBER 2005
www.ti.com
ELECTRICAL CHARACTERISTICS (continued)
V_DD = 2.7 V to 5.5 V, I_OUTX = Virtual GND, A_GNDX = 0 V, V_REFA, B = 10 V, T_A = full operating temperature range, unless
otherwise noted.
PARAMETER
SUPPLY CHARACTERISTICS
Power supply range
SYMBOL
V_{DD RANGE}
Positive supply current
I_DD
Power dissipation
Power supply sensitivity
AC CHARACTERISTICS⁽⁵⁾
P_DISS
P_SS
Output voltage settling time
t_s
Reference multiplying BW
DAC glitch impulse
Feedthrough error
Crosstalk error
Digital feedthrough
Total harmonic distortion
Output spot noise voltage
BW –3 dB
Q
V_OUTX/V_REFX
V_OUTA/V_REFB
Q
THD
e_n
CONDITIONS
Logic inputs = 0 V, V_DD = +4.5 V to +5.5 V
Logic inputs = 0 V, V_DD = +2.7 V to +3.6 V
Logic inputs = 0 V
∆V_DD = ±5%
To ±0.1% of full-scale,
Data = 0000h to FFFFh to 0000h
To ±0.0015% of full-scale,
Data = 0000h to FFFFh to 0000h
V_REFX = 100 mV_RMS, Data = FFFFh, C_FB = 3 pF
V_REFX = 10 V, Data = 7FFFh to 8000h to 7FFFh
Data = 0000h, V_REFX = 100 mV_RMS, f = 100 kHz
Data = 0000h, V_REFB = 100 mV_RMS,
Adjacent channel, f = 100 kHz
CS = 1 and f_CLK = 1 MHz
V_REF = 5 V_PP, Data = FFFFh, f = 1 kHz
f = 1 kHz, BW = 1 Hz
DAC8812
MIN TYP MAX
UNIT
2.7
5.5
V
2
5
µA
1
2.5
µA
0.0275
mW
0.006
%
0.3
0.5
10
5
–70
–100
1
–105
12
µs
µs
MHz
nV/s
dB
dB
nV/s
dB
nV/√Hz
(5) All ac characteristic tests are performed in a closed-loop system using an THS4011 I-to-V converter amplifier.
PARAMETER MEASUREMENT INFORMATION
SDI
CLK
CS
LDAC
A1 A0 D15 D14 D13 D12 D11 D10 D9
t_CSS
t_ds
t_dh
t_ch
t_cl
Figure 1. DAC8812 Timing Diagram
D1 D0
t_csh
Input REG. LD
t_lds
t_LDAC
t_LDH
4