Rainbow Electronics ATR0601 - Manual (Page 2)

2
4866A–GPS–08/05
ATR0601 [Preliminary]
2. Pin Configuration
Figure 2-1. Pinning QFN24
1
2
3
4
5
6
18
17
16
15
14
13
7 8 9 10 11 12
24 23 22 21 20 19
Paddle
GND
VDIG
AGCO
NXTO
NX
X
XTO
PURF
PUXTO
NBPI
BPI
NBP
BP
VC
C
MO
TEST
NRF
RF NC
SC SH SL SD
I
EG
C
VC
C
Table 2-1. Pin Description
Pin Symbol Type (1) Function
Paddle GND S Common ground
1 VDIG S Digital supply
2 AGCO A_I/O AGC: gain control voltage output/corner frequency determination
3 NXTO A_I XTO interface (optional: TCXO input)
4 NX A_O XTO interface
5 X A_O XTO interface
6 XTO A_I XTO interface (optional: TCXO input)
7 VCC S Analog supply
8 MO A_O Testbuffer output (f
IF
)
9 TEST A_I Enable testbuffer
10 NRF A_I RF input complementary
11 RF A_I RF input
12 NC – Not connected
13 BP A_O IF-Filter interface (mixer output, open collector)
14 NBP A_O IF-Filter interface (mixer output complementary, open collector)
15 BPI A_I IF-Filter interface (IF-input)
16 NBPI A_I IF-Filter interface (IF-input complementary)
17 PUXTO D_I Power-up XTO
18 PURF D_I Power-up RF
19 VCC S Analog supply
20 EGC D_I Enable external gain control (high = external; low = internal)
21 SDI D_I Input for external gain control signal (
Σ∆
modulation)
22 SL D_O Data output: “low”
23 SH D_O Data output: “high”
24 SC D_O Sample clock
Note: 1. Type: A_I Analog input, A_O Analog output, D_I Digital input, D_O Digital output, S Supply